]> git.openstreetmap.org Git - nominatim.git/blobdiff - lib/Geocode.php
Merge remote-tracking branch 'upstream/master'
[nominatim.git] / lib / Geocode.php
index f2ca5e5008f36d440cc67f8dc81eb5c497f94b61..8276fe98d6c86d4d4d6d9ad6fafd74757bf949ce 100644 (file)
 <?php
 <?php
-       require_once(CONST_BasePath.'/lib/PlaceLookup.php');
-
-       class Geocode
-       {
-               protected $oDB;
-
-               protected $aLangPrefOrder = array();
-
-               protected $bIncludeAddressDetails = false;
-               protected $bIncludeExtraTags = false;
-               protected $bIncludeNameDetails = false;
-
-               protected $bIncludePolygonAsPoints = false;
-               protected $bIncludePolygonAsText = false;
-               protected $bIncludePolygonAsGeoJSON = false;
-               protected $bIncludePolygonAsKML = false;
-               protected $bIncludePolygonAsSVG = false;
-               protected $fPolygonSimplificationThreshold = 0.0;
-
-               protected $aExcludePlaceIDs = array();
-               protected $bDeDupe = true;
-               protected $bReverseInPlan = false;
-
-               protected $iLimit = 20;
-               protected $iFinalLimit = 10;
-               protected $iOffset = 0;
-               protected $bFallback = false;
-
-               protected $aCountryCodes = false;
-               protected $aNearPoint = false;
-
-               protected $bBoundedSearch = false;
-               protected $aViewBox = false;
-               protected $sViewboxSmallSQL = false;
-               protected $sViewboxLargeSQL = false;
-               protected $aRoutePoints = false;
-
-               protected $iMaxRank = 20;
-               protected $iMinAddressRank = 0;
-               protected $iMaxAddressRank = 30;
-               protected $aAddressRankList = array();
-               protected $exactMatchCache = array();
-
-               protected $sAllowedTypesSQLList = false;
-
-               protected $sQuery = false;
-               protected $aStructuredQuery = false;
-
-               function Geocode(&$oDB)
-               {
-                       $this->oDB =& $oDB;
-               }
-
-               function setReverseInPlan($bReverse)
-               {
-                       $this->bReverseInPlan = $bReverse;
-               }
-
-               function setLanguagePreference($aLangPref)
-               {
-                       $this->aLangPrefOrder = $aLangPref;
-               }
-
-               function setIncludeAddressDetails($bAddressDetails = true)
-               {
-                       $this->bIncludeAddressDetails = (bool)$bAddressDetails;
-               }
-
-               function getIncludeAddressDetails()
-               {
-                       return $this->bIncludeAddressDetails;
-               }
-
-               function getIncludeExtraTags()
-               {
-                       return $this->bIncludeExtraTags;
-               }
-
-               function getIncludeNameDetails()
-               {
-                       return $this->bIncludeNameDetails;
-               }
-
-               function setIncludePolygonAsPoints($b = true)
-               {
-                       $this->bIncludePolygonAsPoints = $b;
-               }
-
-               function getIncludePolygonAsPoints()
-               {
-                       return $this->bIncludePolygonAsPoints;
-               }
-
-               function setIncludePolygonAsText($b = true)
-               {
-                       $this->bIncludePolygonAsText = $b;
-               }
-
-               function getIncludePolygonAsText()
-               {
-                       return $this->bIncludePolygonAsText;
-               }
-
-               function setIncludePolygonAsGeoJSON($b = true)
-               {
-                       $this->bIncludePolygonAsGeoJSON = $b;
-               }
-
-               function setIncludePolygonAsKML($b = true)
-               {
-                       $this->bIncludePolygonAsKML = $b;
-               }
-
-               function setIncludePolygonAsSVG($b = true)
-               {
-                       $this->bIncludePolygonAsSVG = $b;
-               }
-
-               function setPolygonSimplificationThreshold($f)
-               {
-                       $this->fPolygonSimplificationThreshold = $f;
-               }
-
-               function setDeDupe($bDeDupe = true)
-               {
-                       $this->bDeDupe = (bool)$bDeDupe;
-               }
-
-               function setLimit($iLimit = 10)
-               {
-                       if ($iLimit > 50) $iLimit = 50;
-                       if ($iLimit < 1) $iLimit = 1;
-
-                       $this->iFinalLimit = $iLimit;
-                       $this->iLimit = $this->iFinalLimit + min($this->iFinalLimit, 10);
-               }
-
-               function setOffset($iOffset = 0)
-               {
-                       $this->iOffset = $iOffset;
-               }
-
-               function setFallback($bFallback = true)
-               {
-                       $this->bFallback = (bool)$bFallback;
-               }
-
-               function setExcludedPlaceIDs($a)
-               {
-                       // TODO: force to int
-                       $this->aExcludePlaceIDs = $a;
-               }
-
-               function getExcludedPlaceIDs()
-               {
-                       return $this->aExcludePlaceIDs;
-               }
-
-               function setBounded($bBoundedSearch = true)
-               {
-                       $this->bBoundedSearch = (bool)$bBoundedSearch;
-               }
-
-               function setViewBox($fLeft, $fBottom, $fRight, $fTop)
-               {
-                       $this->aViewBox = array($fLeft, $fBottom, $fRight, $fTop);
-               }
-
-               function getViewBoxString()
-               {
-                       if (!$this->aViewBox) return null;
-                       return $this->aViewBox[0].','.$this->aViewBox[3].','.$this->aViewBox[2].','.$this->aViewBox[1];
-               }
-
-               function setRoute($aRoutePoints)
-               {
-                       $this->aRoutePoints = $aRoutePoints;
-               }
-
-               function setFeatureType($sFeatureType)
-               {
-                       switch($sFeatureType)
-                       {
-                       case 'country':
-                               $this->setRankRange(4, 4);
-                               break;
-                       case 'state':
-                               $this->setRankRange(8, 8);
-                               break;
-                       case 'city':
-                               $this->setRankRange(14, 16);
-                               break;
-                       case 'settlement':
-                               $this->setRankRange(8, 20);
-                               break;
-                       }
-               }
-
-               function setRankRange($iMin, $iMax)
-               {
-                       $this->iMinAddressRank = (int)$iMin;
-                       $this->iMaxAddressRank = (int)$iMax;
-               }
-
-               function setNearPoint($aNearPoint, $fRadiusDeg = 0.1)
-               {
-                       $this->aNearPoint = array((float)$aNearPoint[0], (float)$aNearPoint[1], (float)$fRadiusDeg);
-               }
-
-               function setCountryCodesList($aCountryCodes)
-               {
-                       $this->aCountryCodes = $aCountryCodes;
-               }
-
-               function setQuery($sQueryString)
-               {
-                       $this->sQuery = $sQueryString;
-                       $this->aStructuredQuery = false;
-               }
-
-               function getQueryString()
-               {
-                       return $this->sQuery;
-               }
-
-
-               function loadParamArray($aParams)
-               {
-                       if (isset($aParams['addressdetails'])) $this->bIncludeAddressDetails = (bool)$aParams['addressdetails'];
-                       if (isset($aParams['extratags'])) $this->bIncludeExtraTags = (bool)$aParams['extratags'];
-                       if (isset($aParams['namedetails'])) $this->bIncludeNameDetails = (bool)$aParams['namedetails'];
-
-                       if (isset($aParams['bounded'])) $this->bBoundedSearch = (bool)$aParams['bounded'];
-                       if (isset($aParams['dedupe'])) $this->bDeDupe = (bool)$aParams['dedupe'];
-
-                       if (isset($aParams['limit'])) $this->setLimit((int)$aParams['limit']);
-                       if (isset($aParams['offset'])) $this->iOffset = (int)$aParams['offset'];
-
-                       if (isset($aParams['fallback'])) $this->bFallback = (bool)$aParams['fallback'];
-
-                       // List of excluded Place IDs - used for more acurate pageing
-                       if (isset($aParams['exclude_place_ids']) && $aParams['exclude_place_ids'])
-                       {
-                               foreach(explode(',',$aParams['exclude_place_ids']) as $iExcludedPlaceID)
-                               {
-                                       $iExcludedPlaceID = (int)$iExcludedPlaceID;
-                                       if ($iExcludedPlaceID)
-                                               $aExcludePlaceIDs[$iExcludedPlaceID] = $iExcludedPlaceID;
-                               }
-
-                               if (isset($aExcludePlaceIDs))
-                                       $this->aExcludePlaceIDs = $aExcludePlaceIDs;
-                       }
-
-                       // Only certain ranks of feature
-                       if (isset($aParams['featureType'])) $this->setFeatureType($aParams['featureType']);
-                       if (isset($aParams['featuretype'])) $this->setFeatureType($aParams['featuretype']);
-
-                       // Country code list
-                       if (isset($aParams['countrycodes']))
-                       {
-                               $aCountryCodes = array();
-                               foreach(explode(',',$aParams['countrycodes']) as $sCountryCode)
-                               {
-                                       if (preg_match('/^[a-zA-Z][a-zA-Z]$/', $sCountryCode))
-                                       {
-                                               $aCountryCodes[] = strtolower($sCountryCode);
-                                       }
-                               }
-                               $this->aCountryCodes = $aCountryCodes;
-                       }
-
-                       if (isset($aParams['viewboxlbrt']) && $aParams['viewboxlbrt'])
-                       {
-                               $aCoOrdinatesLBRT = explode(',',$aParams['viewboxlbrt']);
-                               $this->setViewBox($aCoOrdinatesLBRT[0], $aCoOrdinatesLBRT[1], $aCoOrdinatesLBRT[2], $aCoOrdinatesLBRT[3]);
-                       }
-                       else if (isset($aParams['viewbox']) && $aParams['viewbox'])
-                       {
-                               $aCoOrdinatesLTRB = explode(',',$aParams['viewbox']);
-                               $this->setViewBox($aCoOrdinatesLTRB[0], $aCoOrdinatesLTRB[3], $aCoOrdinatesLTRB[2], $aCoOrdinatesLTRB[1]);
-                       }
-
-                       if (isset($aParams['route']) && $aParams['route'] && isset($aParams['routewidth']) && $aParams['routewidth'])
-                       {
-                               $aPoints = explode(',',$aParams['route']);
-                               if (sizeof($aPoints) % 2 != 0)
-                               {
-                                       userError("Uneven number of points");
-                                       exit;
-                               }
-                               $fPrevCoord = false;
-                               $aRoute = array();
-                               foreach($aPoints as $i => $fPoint)
-                               {
-                                       if ($i%2)
-                                       {
-                                               $aRoute[] = array((float)$fPoint, $fPrevCoord);
-                                       }
-                                       else
-                                       {
-                                               $fPrevCoord = (float)$fPoint;
-                                       }
-                               }
-                               $this->aRoutePoints = $aRoute;
-                       }
-               }
-
-               function setQueryFromParams($aParams)
-               {
-                       // Search query
-                       $sQuery = (isset($aParams['q'])?trim($aParams['q']):'');
-                       if (!$sQuery)
-                       {
-                               $this->setStructuredQuery(@$aParams['amenity'], @$aParams['street'], @$aParams['city'], @$aParams['county'], @$aParams['state'], @$aParams['country'], @$aParams['postalcode']);
-                               $this->setReverseInPlan(false);
-                       }
-                       else
-                       {
-                               $this->setQuery($sQuery);
-                       }
-               }
-
-               function loadStructuredAddressElement($sValue, $sKey, $iNewMinAddressRank, $iNewMaxAddressRank, $aItemListValues)
-               {
-                       $sValue = trim($sValue);
-                       if (!$sValue) return false;
-                       $this->aStructuredQuery[$sKey] = $sValue;
-                       if ($this->iMinAddressRank == 0 && $this->iMaxAddressRank == 30)
-                       {
-                               $this->iMinAddressRank = $iNewMinAddressRank;
-                               $this->iMaxAddressRank = $iNewMaxAddressRank;
-                       }
-                       if ($aItemListValues) $this->aAddressRankList = array_merge($this->aAddressRankList, $aItemListValues);
-                       return true;
-               }
-
-               function setStructuredQuery($sAmentiy = false, $sStreet = false, $sCity = false, $sCounty = false, $sState = false, $sCountry = false, $sPostalCode = false)
-               {
-                       $this->sQuery = false;
-
-                       // Reset
-                       $this->iMinAddressRank = 0;
-                       $this->iMaxAddressRank = 30;
-                       $this->aAddressRankList = array();
-
-                       $this->aStructuredQuery = array();
-                       $this->sAllowedTypesSQLList = '';
-
-                       $this->loadStructuredAddressElement($sAmentiy, 'amenity', 26, 30, false);
-                       $this->loadStructuredAddressElement($sStreet, 'street', 26, 30, false);
-                       $this->loadStructuredAddressElement($sCity, 'city', 14, 24, false);
-                       $this->loadStructuredAddressElement($sCounty, 'county', 9, 13, false);
-                       $this->loadStructuredAddressElement($sState, 'state', 8, 8, false);
-                       $this->loadStructuredAddressElement($sPostalCode, 'postalcode' , 5, 11, array(5, 11));
-                       $this->loadStructuredAddressElement($sCountry, 'country', 4, 4, false);
-
-                       if (sizeof($this->aStructuredQuery) > 0)
-                       {
-                               $this->sQuery = join(', ', $this->aStructuredQuery);
-                               if ($this->iMaxAddressRank < 30)
-                               {
-                                       $sAllowedTypesSQLList = '(\'place\',\'boundary\')';
-                               }
-                       }
-               }
-
-               function fallbackStructuredQuery()
-               {
-                       if (!$this->aStructuredQuery) return false;
-
-                       $aParams = $this->aStructuredQuery;
-
-                       if (sizeof($aParams) == 1) return false;
-
-                       $aOrderToFallback = array('postalcode', 'street', 'city', 'county', 'state');
-
-                       foreach($aOrderToFallback as $sType)
-                       {
-                               if (isset($aParams[$sType]))
-                               {
-                                       unset($aParams[$sType]);
-                                       $this->setStructuredQuery(@$aParams['amenity'], @$aParams['street'], @$aParams['city'], @$aParams['county'], @$aParams['state'], @$aParams['country'], @$aParams['postalcode']);
-                                       return true;
-                               }
-                       }
-
-                       return false;
-               }
-
-               function getDetails($aPlaceIDs)
-               {
-                       //$aPlaceIDs is an array with key: placeID and value: tiger-housenumber, if found, else -1
-                       if (sizeof($aPlaceIDs) == 0)  return array();
-
-                       $sLanguagePrefArraySQL = "ARRAY[".join(',',array_map("getDBQuoted",$this->aLangPrefOrder))."]";
-
-                       // Get the details for display (is this a redundant extra step?)
-                       $sPlaceIDs = join(',', array_keys($aPlaceIDs));
-
-                       $sImportanceSQL = '';
-                       if ($this->sViewboxSmallSQL) $sImportanceSQL .= " case when ST_Contains($this->sViewboxSmallSQL, ST_Collect(centroid)) THEN 1 ELSE 0.75 END * ";
-                       if ($this->sViewboxLargeSQL) $sImportanceSQL .= " case when ST_Contains($this->sViewboxLargeSQL, ST_Collect(centroid)) THEN 1 ELSE 0.75 END * ";
-
-                       $sSQL = "select osm_type,osm_id,class,type,admin_level,rank_search,rank_address,min(place_id) as place_id, min(parent_place_id) as parent_place_id, calculated_country_code as country_code,";
-                       $sSQL .= "get_address_by_language(place_id, -1, $sLanguagePrefArraySQL) as langaddress,";
-                       $sSQL .= "get_name_by_language(name, $sLanguagePrefArraySQL) as placename,";
-                       $sSQL .= "get_name_by_language(name, ARRAY['ref']) as ref,";
-                       if ($this->bIncludeExtraTags) $sSQL .= "hstore_to_json(extratags)::text as extra,";
-                       if ($this->bIncludeNameDetails) $sSQL .= "hstore_to_json(name)::text as names,";
-                       $sSQL .= "avg(ST_X(centroid)) as lon,avg(ST_Y(centroid)) as lat, ";
-                       $sSQL .= $sImportanceSQL."coalesce(importance,0.75-(rank_search::float/40)) as importance, ";
-                       $sSQL .= "(select max(p.importance*(p.rank_address+2)) from place_addressline s, placex p where s.place_id = min(CASE WHEN placex.rank_search < 28 THEN placex.place_id ELSE placex.parent_place_id END) and p.place_id = s.address_place_id and s.isaddress and p.importance is not null) as addressimportance, ";
-                       $sSQL .= "(extratags->'place') as extra_place ";
-                       $sSQL .= "from placex where place_id in ($sPlaceIDs) ";
-                       $sSQL .= "and (placex.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
-                       if (14 >= $this->iMinAddressRank && 14 <= $this->iMaxAddressRank) $sSQL .= " OR (extratags->'place') = 'city'";
-                       if ($this->aAddressRankList) $sSQL .= " OR placex.rank_address in (".join(',',$this->aAddressRankList).")";
-                       $sSQL .= ") ";
-                       if ($this->sAllowedTypesSQLList) $sSQL .= "and placex.class in $this->sAllowedTypesSQLList ";
-                       $sSQL .= "and linked_place_id is null ";
-                       $sSQL .= "group by osm_type,osm_id,class,type,admin_level,rank_search,rank_address,calculated_country_code,importance";
-                       if (!$this->bDeDupe) $sSQL .= ",place_id";
-                       $sSQL .= ",langaddress ";
-                       $sSQL .= ",placename ";
-                       $sSQL .= ",ref ";
-                       if ($this->bIncludeExtraTags) $sSQL .= ",extratags";
-                       if ($this->bIncludeNameDetails) $sSQL .= ",name";
-                       $sSQL .= ",extratags->'place' ";
-
-                       if (30 >= $this->iMinAddressRank && 30 <= $this->iMaxAddressRank)
-                       {
-                               //query also location_property_tiger and location_property_aux
-                               //Tiger search only if a housenumber was searched and if it was found (i.e. aPlaceIDs[placeID] = housenumber != -1) (realized through a join)
-                               //only Tiger housenumbers need to be interpolated, because they are saved as lines with start- and endnumber, the common osm housenumbers are usually saved as points
-                               $sHousenumbers = "";
-                               $i = 0;
-                               $length = count($aPlaceIDs);
-                               foreach($aPlaceIDs as $placeID => $housenumber)
-                {
-                                       $i++;
-                                       $sHousenumbers .= "(".$placeID.", ".$housenumber.")";
-                                       if($i<$length)
-                                               $sHousenumbers .= ", ";
-                               }
-
-                               $sSQL .= "union ";
-                               $sSQL .= "select 'T' as osm_type, place_id as osm_id, 'place' as class, 'house' as type, null as admin_level, 30 as rank_search, 30 as rank_address, min(place_id) as place_id, min(parent_place_id) as parent_place_id, 'us' as country_code";
-                               $sSQL .= ", get_address_by_language(place_id, housenumber_for_place, $sLanguagePrefArraySQL) as langaddress ";
-                               $sSQL .= ", null as placename";
-                               $sSQL .= ", null as ref";
-                               if ($this->bIncludeExtraTags) $sSQL .= ", null as extra";
-                               if ($this->bIncludeNameDetails) $sSQL .= ", null as names";
-                               $sSQL .= ", avg(st_x(centroid)) as lon, avg(st_y(centroid)) as lat,";
-                               $sSQL .= $sImportanceSQL."-1.15 as importance ";
-                               $sSQL .= ", (select max(p.importance*(p.rank_address+2)) from place_addressline s, placex p where s.place_id = min(blub.parent_place_id) and p.place_id = s.address_place_id and s.isaddress and p.importance is not null) as addressimportance ";
-                               $sSQL .= ", null as extra_place ";
-                               $sSQL .= " from (select place_id";
-                               //interpolate the Tiger housenumbers here
-                               $sSQL .= ", ST_LineInterpolatePoint(linegeo, (housenumber_for_place-startnumber::float)/(endnumber-startnumber)::float) as centroid, parent_place_id, housenumber_for_place ";
-                               $sSQL .= "from (location_property_tiger ";
-                               $sSQL .= " join (values ".$sHousenumbers.") as housenumbers(place_id, housenumber_for_place) using(place_id)) ";
-                               $sSQL .= " where housenumber_for_place>=0 and 30 between $this->iMinAddressRank and $this->iMaxAddressRank) as blub"; //postgres wants an alias here
-                               $sSQL .= " group by place_id, housenumber_for_place"; //is this group by really needed?, place_id + housenumber (in combination) are unique
-                               if (!$this->bDeDupe) $sSQL .= ", place_id ";
-
-                               $sSQL .= " union ";
-                               $sSQL .= "select 'L' as osm_type, place_id as osm_id, 'place' as class, 'house' as type, null as admin_level, 0 as rank_search, 0 as rank_address, min(place_id) as place_id, min(parent_place_id) as parent_place_id, 'us' as country_code, ";
-                               $sSQL .= "get_address_by_language(place_id, -1, $sLanguagePrefArraySQL) as langaddress, ";
-                               $sSQL .= "null as placename, ";
-                               $sSQL .= "null as ref, ";
-                               if ($this->bIncludeExtraTags) $sSQL .= "null as extra, ";
-                               if ($this->bIncludeNameDetails) $sSQL .= "null as names, ";
-                               $sSQL .= "avg(ST_X(centroid)) as lon, avg(ST_Y(centroid)) as lat, ";
-                               $sSQL .= $sImportanceSQL."-1.10 as importance, ";
-                               $sSQL .= "(select max(p.importance*(p.rank_address+2)) from place_addressline s, placex p where s.place_id = min(location_property_aux.parent_place_id) and p.place_id = s.address_place_id and s.isaddress and p.importance is not null) as addressimportance, ";
-                               $sSQL .= "null as extra_place ";
-                               $sSQL .= "from location_property_aux where place_id in ($sPlaceIDs) ";
-                               $sSQL .= "and 30 between $this->iMinAddressRank and $this->iMaxAddressRank ";
-                               $sSQL .= "group by place_id";
-                               if (!$this->bDeDupe) $sSQL .= ", place_id";
-                               $sSQL .= ", get_address_by_language(place_id, -1, $sLanguagePrefArraySQL) ";
-                       }
-
-                       $sSQL .= " order by importance desc";
-                       if (CONST_Debug) { echo "<hr>"; var_dump($sSQL); }
-                       $aSearchResults = $this->oDB->getAll($sSQL);
-
-                       if (PEAR::IsError($aSearchResults))
-                       {
-                               failInternalError("Could not get details for place.", $sSQL, $aSearchResults);
-                       }
-
-                       return $aSearchResults;
-               }
-
-               function getGroupedSearches($aSearches, $aPhraseTypes, $aPhrases, $aValidTokens, $aWordFrequencyScores, $bStructuredPhrases)
-               {
-                       /*
-                                Calculate all searches using aValidTokens i.e.
-                                'Wodsworth Road, Sheffield' =>
-
-                                Phrase Wordset
-                                0      0       (wodsworth road)
-                                0      1       (wodsworth)(road)
-                                1      0       (sheffield)
-
-                                Score how good the search is so they can be ordered
-                        */
-                       foreach($aPhrases as $iPhrase => $sPhrase)
-                       {
-                               $aNewPhraseSearches = array();
-                               if ($bStructuredPhrases) $sPhraseType = $aPhraseTypes[$iPhrase];
-                               else $sPhraseType = '';
-
-                               foreach($aPhrases[$iPhrase]['wordsets'] as $iWordSet => $aWordset)
-                               {
-                                       // Too many permutations - too expensive
-                                       if ($iWordSet > 120) break;
-
-                                       $aWordsetSearches = $aSearches;
-
-                                       // Add all words from this wordset
-                                       foreach($aWordset as $iToken => $sToken)
-                                       {
-                                               //echo "<br><b>$sToken</b>";
-                                               $aNewWordsetSearches = array();
-
-                                               foreach($aWordsetSearches as $aCurrentSearch)
-                                               {
-                                                       //echo "<i>";
-                                                       //var_dump($aCurrentSearch);
-                                                       //echo "</i>";
-
-                                                       // If the token is valid
-                                                       if (isset($aValidTokens[' '.$sToken]))
-                                                       {
-                                                               foreach($aValidTokens[' '.$sToken] as $aSearchTerm)
-                                                               {
-                                                                       $aSearch = $aCurrentSearch;
-                                                                       $aSearch['iSearchRank']++;
-                                                                       if (($sPhraseType == '' || $sPhraseType == 'country') && !empty($aSearchTerm['country_code']) && $aSearchTerm['country_code'] != '0')
-                                                                       {
-                                                                               if ($aSearch['sCountryCode'] === false)
-                                                                               {
-                                                                                       $aSearch['sCountryCode'] = strtolower($aSearchTerm['country_code']);
-                                                                                       // Country is almost always at the end of the string - increase score for finding it anywhere else (optimisation)
-                                                                                       if (($iToken+1 != sizeof($aWordset) || $iPhrase+1 != sizeof($aPhrases)))
-                                                                                       {
-                                                                                               $aSearch['iSearchRank'] += 5;
-                                                                                       }
-                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                               }
-                                                                       }
-                                                                       elseif (isset($aSearchTerm['lat']) && $aSearchTerm['lat'] !== '' && $aSearchTerm['lat'] !== null)
-                                                                       {
-                                                                               if ($aSearch['fLat'] === '')
-                                                                               {
-                                                                                       $aSearch['fLat'] = $aSearchTerm['lat'];
-                                                                                       $aSearch['fLon'] = $aSearchTerm['lon'];
-                                                                                       $aSearch['fRadius'] = $aSearchTerm['radius'];
-                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                               }
-                                                                       }
-                                                                       elseif ($sPhraseType == 'postalcode')
-                                                                       {
-                                                                               // We need to try the case where the postal code is the primary element (i.e. no way to tell if it is (postalcode, city) OR (city, postalcode) so try both
-                                                                               if (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
-                                                                               {
-                                                                                       // If we already have a name try putting the postcode first
-                                                                                       if (sizeof($aSearch['aName']))
-                                                                                       {
-                                                                                               $aNewSearch = $aSearch;
-                                                                                               $aNewSearch['aAddress'] = array_merge($aNewSearch['aAddress'], $aNewSearch['aName']);
-                                                                                               $aNewSearch['aName'] = array();
-                                                                                               $aNewSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aNewSearch;
-                                                                                       }
-
-                                                                                       if (sizeof($aSearch['aName']))
-                                                                                       {
-                                                                                               if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strpos($sToken, ' ') !== false))
-                                                                                               {
-                                                                                                       $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                               }
-                                                                                               else
-                                                                                               {
-                                                                                                       $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                                       $aSearch['iSearchRank'] += 1000; // skip;
-                                                                                               }
-                                                                                       }
-                                                                                       else
-                                                                                       {
-                                                                                               $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                               //$aSearch['iNamePhrase'] = $iPhrase;
-                                                                                       }
-                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                               }
-
-                                                                       }
-                                                                       elseif (($sPhraseType == '' || $sPhraseType == 'street') && $aSearchTerm['class'] == 'place' && $aSearchTerm['type'] == 'house')
-                                                                       {
-                                                                               if ($aSearch['sHouseNumber'] === '')
-                                                                               {
-                                                                                       $aSearch['sHouseNumber'] = $sToken;
-                                                                                       // sanity check: if the housenumber is not mainly made
-                                                                                       // up of numbers, add a penalty
-                                                                                       if (preg_match_all("/[^0-9]/", $sToken, $aMatches) > 2) $aSearch['iSearchRank']++;
-                                                                                       // also housenumbers should appear in the first or second phrase
-                                                                                       if ($iPhrase > 1) $aSearch['iSearchRank'] += 1;
-                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                       /*
-                                                                                       // Fall back to not searching for this item (better than nothing)
-                                                                                       $aSearch = $aCurrentSearch;
-                                                                                       $aSearch['iSearchRank'] += 1;
-                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                        */
-                                                                               }
-                                                                       }
-                                                                       elseif ($sPhraseType == '' && $aSearchTerm['class'] !== '' && $aSearchTerm['class'] !== null)
-                                                                       {
-                                                                               if ($aSearch['sClass'] === '')
-                                                                               {
-                                                                                       $aSearch['sOperator'] = $aSearchTerm['operator'];
-                                                                                       $aSearch['sClass'] = $aSearchTerm['class'];
-                                                                                       $aSearch['sType'] = $aSearchTerm['type'];
-                                                                                       if (sizeof($aSearch['aName'])) $aSearch['sOperator'] = 'name';
-                                                                                       else $aSearch['sOperator'] = 'near'; // near = in for the moment
-                                                                                       if (strlen($aSearchTerm['operator']) == 0) $aSearch['iSearchRank'] += 1;
-
-                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                               }
-                                                                       }
-                                                                       elseif (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
-                                                                       {
-                                                                               if (sizeof($aSearch['aName']))
-                                                                               {
-                                                                                       if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strpos($sToken, ' ') !== false))
-                                                                                       {
-                                                                                               $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                       }
-                                                                                       else
-                                                                                       {
-                                                                                               $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                               $aSearch['iSearchRank'] += 1000; // skip;
-                                                                                       }
-                                                                               }
-                                                                               else
-                                                                               {
-                                                                                       $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                       //$aSearch['iNamePhrase'] = $iPhrase;
-                                                                               }
-                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                       }
-                                                               }
-                                                       }
-                                                       // Look for partial matches.
-                                                       // Note that there is no point in adding country terms here
-                                                       // because country are omitted in the address.
-                                                       if (isset($aValidTokens[$sToken]) && $sPhraseType != 'country')
-                                                       {
-                                                               // Allow searching for a word - but at extra cost
-                                                               foreach($aValidTokens[$sToken] as $aSearchTerm)
-                                                               {
-                                                                       if (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
-                                                                       {
-                                                                               if ((!$bStructuredPhrases || $iPhrase > 0) && sizeof($aCurrentSearch['aName']) && strpos($sToken, ' ') === false)
-                                                                               {
-                                                                                       $aSearch = $aCurrentSearch;
-                                                                                       $aSearch['iSearchRank'] += 1;
-                                                                                       if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency)
-                                                                                       {
-                                                                                               $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                       }
-                                                                                       elseif (isset($aValidTokens[' '.$sToken])) // revert to the token version?
-                                                                                       {
-                                                                                               $aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                               $aSearch['iSearchRank'] += 1;
-                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                               foreach($aValidTokens[' '.$sToken] as $aSearchTermToken)
-                                                                                               {
-                                                                                                       if (empty($aSearchTermToken['country_code'])
-                                                                                                                       && empty($aSearchTermToken['lat'])
-                                                                                                                       && empty($aSearchTermToken['class']))
-                                                                                                       {
-                                                                                                               $aSearch = $aCurrentSearch;
-                                                                                                               $aSearch['iSearchRank'] += 1;
-                                                                                                               $aSearch['aAddress'][$aSearchTermToken['word_id']] = $aSearchTermToken['word_id'];
-                                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                                       }
-                                                                                               }
-                                                                                       }
-                                                                                       else
-                                                                                       {
-                                                                                               $aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                               if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
-                                                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                                       }
-                                                                               }
-
-                                                                               if (!sizeof($aCurrentSearch['aName']) || $aCurrentSearch['iNamePhrase'] == $iPhrase)
-                                                                               {
-                                                                                       $aSearch = $aCurrentSearch;
-                                                                                       $aSearch['iSearchRank'] += 1;
-                                                                                       if (!sizeof($aCurrentSearch['aName'])) $aSearch['iSearchRank'] += 1;
-                                                                                       if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
-                                                                                       if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency)
-                                                                                               $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                       else
-                                                                                               $aSearch['aNameNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
-                                                                                       $aSearch['iNamePhrase'] = $iPhrase;
-                                                                                       if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
-                                                                               }
-                                                                       }
-                                                               }
-                                                       }
-                                                       else
-                                                       {
-                                                               // Allow skipping a word - but at EXTREAM cost
-                                                               //$aSearch = $aCurrentSearch;
-                                                               //$aSearch['iSearchRank']+=100;
-                                                               //$aNewWordsetSearches[] = $aSearch;
-                                                       }
-                                               }
-                                               // Sort and cut
-                                               usort($aNewWordsetSearches, 'bySearchRank');
-                                               $aWordsetSearches = array_slice($aNewWordsetSearches, 0, 50);
-                                       }
-                                       //var_Dump('<hr>',sizeof($aWordsetSearches)); exit;
-
-                                       $aNewPhraseSearches = array_merge($aNewPhraseSearches, $aNewWordsetSearches);
-                                       usort($aNewPhraseSearches, 'bySearchRank');
-
-                                       $aSearchHash = array();
-                                       foreach($aNewPhraseSearches as $iSearch => $aSearch)
-                                       {
-                                               $sHash = serialize($aSearch);
-                                               if (isset($aSearchHash[$sHash])) unset($aNewPhraseSearches[$iSearch]);
-                                               else $aSearchHash[$sHash] = 1;
-                                       }
-
-                                       $aNewPhraseSearches = array_slice($aNewPhraseSearches, 0, 50);
-                               }
-
-                               // Re-group the searches by their score, junk anything over 20 as just not worth trying
-                               $aGroupedSearches = array();
-                               foreach($aNewPhraseSearches as $aSearch)
-                               {
-                                       if ($aSearch['iSearchRank'] < $this->iMaxRank)
-                                       {
-                                               if (!isset($aGroupedSearches[$aSearch['iSearchRank']])) $aGroupedSearches[$aSearch['iSearchRank']] = array();
-                                               $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
-                                       }
-                               }
-                               ksort($aGroupedSearches);
-
-                               $iSearchCount = 0;
-                               $aSearches = array();
-                               foreach($aGroupedSearches as $iScore => $aNewSearches)
-                               {
-                                       $iSearchCount += sizeof($aNewSearches);
-                                       $aSearches = array_merge($aSearches, $aNewSearches);
-                                       if ($iSearchCount > 50) break;
-                               }
-
-                               //if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
-
-                       }
-                       return $aGroupedSearches;
-
-               }
-
-               /* Perform the actual query lookup.
-
-                       Returns an ordered list of results, each with the following fields:
-                               osm_type: type of corresponding OSM object
-                                                       N - node
-                                                       W - way
-                                                       R - relation
-                                                       P - postcode (internally computed)
-                               osm_id: id of corresponding OSM object
-                               class: general object class (corresponds to tag key of primary OSM tag)
-                               type: subclass of object (corresponds to tag value of primary OSM tag)
-                               admin_level: see http://wiki.openstreetmap.org/wiki/Admin_level
-                               rank_search: rank in search hierarchy
-                                                       (see also http://wiki.openstreetmap.org/wiki/Nominatim/Development_overview#Country_to_street_level)
-                               rank_address: rank in address hierarchy (determines orer in address)
-                               place_id: internal key (may differ between different instances)
-                               country_code: ISO country code
-                               langaddress: localized full address
-                               placename: localized name of object
-                               ref: content of ref tag (if available)
-                               lon: longitude
-                               lat: latitude
-                               importance: importance of place based on Wikipedia link count
-                               addressimportance: cumulated importance of address elements
-                               extra_place: type of place (for admin boundaries, if there is a place tag)
-                               aBoundingBox: bounding Box
-                               label: short description of the object class/type (English only)
-                               name: full name (currently the same as langaddress)
-                               foundorder: secondary ordering for places with same importance
-               */
-               function lookup()
-               {
-                       if (!$this->sQuery && !$this->aStructuredQuery) return false;
-
-                       $sLanguagePrefArraySQL = "ARRAY[".join(',',array_map("getDBQuoted",$this->aLangPrefOrder))."]";
-                       $sCountryCodesSQL = false;
-                       if ($this->aCountryCodes && sizeof($this->aCountryCodes))
-                       {
-                               $sCountryCodesSQL = join(',', array_map('addQuotes', $this->aCountryCodes));
-                       }
-
-                       $sQuery = $this->sQuery;
-
-                       // Conflicts between US state abreviations and various words for 'the' in different languages
-                       if (isset($this->aLangPrefOrder['name:en']))
-                       {
-                               $sQuery = preg_replace('/(^|,)\s*il\s*(,|$)/','\1illinois\2', $sQuery);
-                               $sQuery = preg_replace('/(^|,)\s*al\s*(,|$)/','\1alabama\2', $sQuery);
-                               $sQuery = preg_replace('/(^|,)\s*la\s*(,|$)/','\1louisiana\2', $sQuery);
-                       }
-
-                       // View Box SQL
-                       $sViewboxCentreSQL = false;
-                       $bBoundingBoxSearch = false;
-                       if ($this->aViewBox)
-                       {
-                               $fHeight = $this->aViewBox[0]-$this->aViewBox[2];
-                               $fWidth = $this->aViewBox[1]-$this->aViewBox[3];
-                               $aBigViewBox[0] = $this->aViewBox[0] + $fHeight;
-                               $aBigViewBox[2] = $this->aViewBox[2] - $fHeight;
-                               $aBigViewBox[1] = $this->aViewBox[1] + $fWidth;
-                               $aBigViewBox[3] = $this->aViewBox[3] - $fWidth;
-
-                               $this->sViewboxSmallSQL = "ST_SetSRID(ST_MakeBox2D(ST_Point(".(float)$this->aViewBox[0].",".(float)$this->aViewBox[1]."),ST_Point(".(float)$this->aViewBox[2].",".(float)$this->aViewBox[3].")),4326)";
-                               $this->sViewboxLargeSQL = "ST_SetSRID(ST_MakeBox2D(ST_Point(".(float)$aBigViewBox[0].",".(float)$aBigViewBox[1]."),ST_Point(".(float)$aBigViewBox[2].",".(float)$aBigViewBox[3].")),4326)";
-                               $bBoundingBoxSearch = $this->bBoundedSearch;
-                       }
-
-                       // Route SQL
-                       if ($this->aRoutePoints)
-                       {
-                               $sViewboxCentreSQL = "ST_SetSRID('LINESTRING(";
-                               $bFirst = true;
-                               foreach($this->aRoutePoints as $aPoint)
-                               {
-                                       if (!$bFirst) $sViewboxCentreSQL .= ",";
-                                       $sViewboxCentreSQL .= $aPoint[0].' '.$aPoint[1];
-                                       $bFirst = false;
-                               }
-                               $sViewboxCentreSQL .= ")'::geometry,4326)";
-
-                               $sSQL = "select st_buffer(".$sViewboxCentreSQL.",".(float)($_GET['routewidth']/69).")";
-                               $this->sViewboxSmallSQL = $this->oDB->getOne($sSQL);
-                               if (PEAR::isError($this->sViewboxSmallSQL))
-                               {
-                                       failInternalError("Could not get small viewbox.", $sSQL, $this->sViewboxSmallSQL);
-                               }
-                               $this->sViewboxSmallSQL = "'".$this->sViewboxSmallSQL."'::geometry";
-
-                               $sSQL = "select st_buffer(".$sViewboxCentreSQL.",".(float)($_GET['routewidth']/30).")";
-                               $this->sViewboxLargeSQL = $this->oDB->getOne($sSQL);
-                               if (PEAR::isError($this->sViewboxLargeSQL))
-                               {
-                                       failInternalError("Could not get large viewbox.", $sSQL, $this->sViewboxLargeSQL);
-                               }
-                               $this->sViewboxLargeSQL = "'".$this->sViewboxLargeSQL."'::geometry";
-                               $bBoundingBoxSearch = $this->bBoundedSearch;
-                       }
-
-                       // Do we have anything that looks like a lat/lon pair?
-                       if ( $aLooksLike = looksLikeLatLonPair($sQuery) )
-            {
-                               $this->setNearPoint(array($aLooksLike['lat'], $aLooksLike['lon']));
-                               $sQuery = $aLooksLike['query'];
-                       }
-
-                       $aSearchResults = array();
-                       if ($sQuery || $this->aStructuredQuery)
-                       {
-                               // Start with a blank search
-                               $aSearches = array(
-                                       array('iSearchRank' => 0,
-                                                               'iNamePhrase' => -1,
-                                                               'sCountryCode' => false,
-                                                               'aName' => array(),
-                                                               'aAddress' => array(),
-                                                               'aFullNameAddress' => array(),
-                                                               'aNameNonSearch' => array(),
-                                                               'aAddressNonSearch' => array(),
-                                                               'sOperator' => '',
-                                                               'aFeatureName' => array(),
-                                                               'sClass' => '',
-                                                               'sType' => '',
-                                                               'sHouseNumber' => '',
-                                                               'fLat' => '',
-                                                               'fLon' => '',
-                                                               'fRadius' => ''
-                                                       )
-                               );
-
-                               // Do we have a radius search?
-                               $sNearPointSQL = false;
-                               if ($this->aNearPoint)
-                               {
-                                       $sNearPointSQL = "ST_SetSRID(ST_Point(".(float)$this->aNearPoint[1].",".(float)$this->aNearPoint[0]."),4326)";
-                                       $aSearches[0]['fLat'] = (float)$this->aNearPoint[0];
-                                       $aSearches[0]['fLon'] = (float)$this->aNearPoint[1];
-                                       $aSearches[0]['fRadius'] = (float)$this->aNearPoint[2];
-                               }
-
-                               // Any 'special' terms in the search?
-                               $bSpecialTerms = false;
-                               preg_match_all('/\\[(.*)=(.*)\\]/', $sQuery, $aSpecialTermsRaw, PREG_SET_ORDER);
-                               $aSpecialTerms = array();
-                               foreach($aSpecialTermsRaw as $aSpecialTerm)
-                               {
-                                       $sQuery = str_replace($aSpecialTerm[0], ' ', $sQuery);
-                                       $aSpecialTerms[strtolower($aSpecialTerm[1])] = $aSpecialTerm[2];
-                               }
-
-                               preg_match_all('/\\[([\\w ]*)\\]/u', $sQuery, $aSpecialTermsRaw, PREG_SET_ORDER);
-                               $aSpecialTerms = array();
-                               if (isset($this->aStructuredQuery['amenity']) && $this->aStructuredQuery['amenity'])
-                               {
-                                       $aSpecialTermsRaw[] = array('['.$this->aStructuredQuery['amenity'].']', $this->aStructuredQuery['amenity']);
-                                       unset($this->aStructuredQuery['amenity']);
-                               }
-                               foreach($aSpecialTermsRaw as $aSpecialTerm)
-                               {
-                                       $sQuery = str_replace($aSpecialTerm[0], ' ', $sQuery);
-                                       $sToken = $this->oDB->getOne("select make_standard_name('".$aSpecialTerm[1]."') as string");
-                                       $sSQL = 'select * from (select word_id,word_token, word, class, type, country_code, operator';
-                                       $sSQL .= ' from word where word_token in (\' '.$sToken.'\')) as x where (class is not null and class not in (\'place\')) or country_code is not null';
-                                       if (CONST_Debug) var_Dump($sSQL);
-                                       $aSearchWords = $this->oDB->getAll($sSQL);
-                                       $aNewSearches = array();
-                                       foreach($aSearches as $aSearch)
-                                       {
-                                               foreach($aSearchWords as $aSearchTerm)
-                                               {
-                                                       $aNewSearch = $aSearch;
-                                                       if ($aSearchTerm['country_code'])
-                                                       {
-                                                               $aNewSearch['sCountryCode'] = strtolower($aSearchTerm['country_code']);
-                                                               $aNewSearches[] = $aNewSearch;
-                                                               $bSpecialTerms = true;
-                                                       }
-                                                       if ($aSearchTerm['class'])
-                                                       {
-                                                               $aNewSearch['sClass'] = $aSearchTerm['class'];
-                                                               $aNewSearch['sType'] = $aSearchTerm['type'];
-                                                               $aNewSearches[] = $aNewSearch;
-                                                               $bSpecialTerms = true;
-                                                       }
-                                               }
-                                       }
-                                       $aSearches = $aNewSearches;
-                               }
-
-                               // Split query into phrases
-                               // Commas are used to reduce the search space by indicating where phrases split
-                               if ($this->aStructuredQuery)
-                               {
-                                       $aPhrases = $this->aStructuredQuery;
-                                       $bStructuredPhrases = true;
-                               }
-                               else
-                               {
-                                       $aPhrases = explode(',',$sQuery);
-                                       $bStructuredPhrases = false;
-                               }
-
-                               // Convert each phrase to standard form
-                               // Create a list of standard words
-                               // Get all 'sets' of words
-                               // Generate a complete list of all
-                               $aTokens = array();
-                               foreach($aPhrases as $iPhrase => $sPhrase)
-                               {
-                                       $aPhrase = $this->oDB->getRow("select make_standard_name('".pg_escape_string($sPhrase)."') as string");
-                                       if (PEAR::isError($aPhrase))
-                                       {
-                                               userError("Illegal query string (not an UTF-8 string): ".$sPhrase);
-                                               if (CONST_Debug) var_dump($aPhrase);
-                                               exit;
-                                       }
-                                       if (trim($aPhrase['string']))
-                                       {
-                                               $aPhrases[$iPhrase] = $aPhrase;
-                                               $aPhrases[$iPhrase]['words'] = explode(' ',$aPhrases[$iPhrase]['string']);
-                                               $aPhrases[$iPhrase]['wordsets'] = getWordSets($aPhrases[$iPhrase]['words'], 0);
-                                               $aTokens = array_merge($aTokens, getTokensFromSets($aPhrases[$iPhrase]['wordsets']));
-                                       }
-                                       else
-                                       {
-                                               unset($aPhrases[$iPhrase]);
-                                       }
-                               }
-
-                               // Reindex phrases - we make assumptions later on that they are numerically keyed in order
-                               $aPhraseTypes = array_keys($aPhrases);
-                               $aPhrases = array_values($aPhrases);
-
-                               if (sizeof($aTokens))
-                               {
-                                       // Check which tokens we have, get the ID numbers
-                                       $sSQL = 'select word_id,word_token, word, class, type, country_code, operator, search_name_count';
-                                       $sSQL .= ' from word where word_token in ('.join(',',array_map("getDBQuoted",$aTokens)).')';
-
-                                       if (CONST_Debug) var_Dump($sSQL);
-
-                                       $aValidTokens = array();
-                                       if (sizeof($aTokens)) $aDatabaseWords = $this->oDB->getAll($sSQL);
-                                       else $aDatabaseWords = array();
-                                       if (PEAR::IsError($aDatabaseWords))
-                                       {
-                                               failInternalError("Could not get word tokens.", $sSQL, $aDatabaseWords);
-                                       }
-                                       $aPossibleMainWordIDs = array();
-                                       $aWordFrequencyScores = array();
-                                       foreach($aDatabaseWords as $aToken)
-                                       {
-                                               // Very special case - require 2 letter country param to match the country code found
-                                               if ($bStructuredPhrases && $aToken['country_code'] && !empty($this->aStructuredQuery['country'])
-                                                               && strlen($this->aStructuredQuery['country']) == 2 && strtolower($this->aStructuredQuery['country']) != $aToken['country_code'])
-                                               {
-                                                       continue;
-                                               }
-
-                                               if (isset($aValidTokens[$aToken['word_token']]))
-                                               {
-                                                       $aValidTokens[$aToken['word_token']][] = $aToken;
-                                               }
-                                               else
-                                               {
-                                                       $aValidTokens[$aToken['word_token']] = array($aToken);
-                                               }
-                                               if (!$aToken['class'] && !$aToken['country_code']) $aPossibleMainWordIDs[$aToken['word_id']] = 1;
-                                               $aWordFrequencyScores[$aToken['word_id']] = $aToken['search_name_count'] + 1;
-                                       }
-                                       if (CONST_Debug) var_Dump($aPhrases, $aValidTokens);
-
-                                       // Try and calculate GB postcodes we might be missing
-                                       foreach($aTokens as $sToken)
-                                       {
-                                               // Source of gb postcodes is now definitive - always use
-                                               if (preg_match('/^([A-Z][A-Z]?[0-9][0-9A-Z]? ?[0-9])([A-Z][A-Z])$/', strtoupper(trim($sToken)), $aData))
-                                               {
-                                                       if (substr($aData[1],-2,1) != ' ')
-                                                       {
-                                                               $aData[0] = substr($aData[0],0,strlen($aData[1])-1).' '.substr($aData[0],strlen($aData[1])-1);
-                                                               $aData[1] = substr($aData[1],0,-1).' '.substr($aData[1],-1,1);
-                                                       }
-                                                       $aGBPostcodeLocation = gbPostcodeCalculate($aData[0], $aData[1], $aData[2], $this->oDB);
-                                                       if ($aGBPostcodeLocation)
-                                                       {
-                                                               $aValidTokens[$sToken] = $aGBPostcodeLocation;
-                                                       }
-                                               }
-                                               // US ZIP+4 codes - if there is no token,
-                                               //      merge in the 5-digit ZIP code
-                                               else if (!isset($aValidTokens[$sToken]) && preg_match('/^([0-9]{5}) [0-9]{4}$/', $sToken, $aData))
-                                               {
-                                                       if (isset($aValidTokens[$aData[1]]))
-                                                       {
-                                                               foreach($aValidTokens[$aData[1]] as $aToken)
-                                                               {
-                                                                       if (!$aToken['class'])
-                                                                       {
-                                                                               if (isset($aValidTokens[$sToken]))
-                                                                               {
-                                                                                       $aValidTokens[$sToken][] = $aToken;
-                                                                               }
-                                                                               else
-                                                                               {
-                                                                                       $aValidTokens[$sToken] = array($aToken);
-                                                                               }
-                                                                       }
-                                                               }
-                                                       }
-                                               }
-                                       }
-
-                                       foreach($aTokens as $sToken)
-                                       {
-                                               // Unknown single word token with a number - assume it is a house number
-                                               if (!isset($aValidTokens[' '.$sToken]) && strpos($sToken,' ') === false && preg_match('/[0-9]/', $sToken))
-                                               {
-                                                       $aValidTokens[' '.$sToken] = array(array('class'=>'place','type'=>'house'));
-                                               }
-                                       }
-
-                                       // Any words that have failed completely?
-                                       // TODO: suggestions
-
-                                       // Start the search process
-                                       // array with: placeid => -1 | tiger-housenumber
-                                       $aResultPlaceIDs = array();
-
-                                       $aGroupedSearches = $this->getGroupedSearches($aSearches, $aPhraseTypes, $aPhrases, $aValidTokens, $aWordFrequencyScores, $bStructuredPhrases);
-
-                                       if ($this->bReverseInPlan)
-                                       {
-                                               // Reverse phrase array and also reverse the order of the wordsets in
-                                               // the first and final phrase. Don't bother about phrases in the middle
-                                               // because order in the address doesn't matter.
-                                               $aPhrases = array_reverse($aPhrases);
-                                               $aPhrases[0]['wordsets'] = getInverseWordSets($aPhrases[0]['words'], 0);
-                                               if (sizeof($aPhrases) > 1)
-                                               {
-                                                       $aFinalPhrase = end($aPhrases);
-                                                       $aPhrases[sizeof($aPhrases)-1]['wordsets'] = getInverseWordSets($aFinalPhrase['words'], 0);
-                                               }
-                                               $aReverseGroupedSearches = $this->getGroupedSearches($aSearches, null, $aPhrases, $aValidTokens, $aWordFrequencyScores, false);
-
-                                               foreach($aGroupedSearches as $aSearches)
-                                               {
-                                                       foreach($aSearches as $aSearch)
-                                                       {
-                                                               if ($aSearch['iSearchRank'] < $this->iMaxRank)
-                                                               {
-                                                                       if (!isset($aReverseGroupedSearches[$aSearch['iSearchRank']])) $aReverseGroupedSearches[$aSearch['iSearchRank']] = array();
-                                                                       $aReverseGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
-                                                               }
-
-                                                       }
-                                               }
-
-                                               $aGroupedSearches = $aReverseGroupedSearches;
-                                               ksort($aGroupedSearches);
-                                       }
-                               }
-                               else
-                               {
-                                       // Re-group the searches by their score, junk anything over 20 as just not worth trying
-                                       $aGroupedSearches = array();
-                                       foreach($aSearches as $aSearch)
-                                       {
-                                               if ($aSearch['iSearchRank'] < $this->iMaxRank)
-                                               {
-                                                       if (!isset($aGroupedSearches[$aSearch['iSearchRank']])) $aGroupedSearches[$aSearch['iSearchRank']] = array();
-                                                       $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
-                                               }
-                                       }
-                                       ksort($aGroupedSearches);
-                               }
-
-                               if (CONST_Debug) var_Dump($aGroupedSearches);
-
-                               if (CONST_Search_TryDroppedAddressTerms && sizeof($this->aStructuredQuery) > 0)
-                               {
-                                       $aCopyGroupedSearches = $aGroupedSearches;
-                                       foreach($aCopyGroupedSearches as $iGroup => $aSearches)
-                                       {
-                                               foreach($aSearches as $iSearch => $aSearch)
-                                               {
-                                                       $aReductionsList = array($aSearch['aAddress']);
-                                                       $iSearchRank = $aSearch['iSearchRank'];
-                                                       while(sizeof($aReductionsList) > 0)
-                                                       {
-                                                               $iSearchRank += 5;
-                                                               if ($iSearchRank > iMaxRank) break 3;
-                                                               $aNewReductionsList = array();
-                                                               foreach($aReductionsList as $aReductionsWordList)
-                                                               {
-                                                                       for ($iReductionWord = 0; $iReductionWord < sizeof($aReductionsWordList); $iReductionWord++)
-                                                                       {
-                                                                               $aReductionsWordListResult = array_merge(array_slice($aReductionsWordList, 0, $iReductionWord), array_slice($aReductionsWordList, $iReductionWord+1));
-                                                                               $aReverseSearch = $aSearch;
-                                                                               $aSearch['aAddress'] = $aReductionsWordListResult;
-                                                                               $aSearch['iSearchRank'] = $iSearchRank;
-                                                                               $aGroupedSearches[$iSearchRank][] = $aReverseSearch;
-                                                                               if (sizeof($aReductionsWordListResult) > 0)
-                                                                               {
-                                                                                       $aNewReductionsList[] = $aReductionsWordListResult;
-                                                                               }
-                                                                       }
-                                                               }
-                                                               $aReductionsList = $aNewReductionsList;
-                                                       }
-                                               }
-                                       }
-                                       ksort($aGroupedSearches);
-                               }
-
-                               // Filter out duplicate searches
-                               $aSearchHash = array();
-                               foreach($aGroupedSearches as $iGroup => $aSearches)
-                               {
-                                       foreach($aSearches as $iSearch => $aSearch)
-                                       {
-                                               $sHash = serialize($aSearch);
-                                               if (isset($aSearchHash[$sHash]))
-                                               {
-                                                       unset($aGroupedSearches[$iGroup][$iSearch]);
-                                                       if (sizeof($aGroupedSearches[$iGroup]) == 0) unset($aGroupedSearches[$iGroup]);
-                                               }
-                                               else
-                                               {
-                                                       $aSearchHash[$sHash] = 1;
-                                               }
-                                       }
-                               }
-
-                               if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
-
-                               $iGroupLoop = 0;
-                               $iQueryLoop = 0;
-                               foreach($aGroupedSearches as $iGroupedRank => $aSearches)
-                               {
-                                       $iGroupLoop++;
-                                       foreach($aSearches as $aSearch)
-                                       {
-                                               $iQueryLoop++;
-                                               $searchedHousenumber = -1;
-
-                                               if (CONST_Debug) { echo "<hr><b>Search Loop, group $iGroupLoop, loop $iQueryLoop</b>"; }
-                                               if (CONST_Debug) _debugDumpGroupedSearches(array($iGroupedRank => array($aSearch)), $aValidTokens);
-
-                                               // No location term?
-                                               if (!sizeof($aSearch['aName']) && !sizeof($aSearch['aAddress']) && !$aSearch['fLon'])
-                                               {
-                                                       if ($aSearch['sCountryCode'] && !$aSearch['sClass'] && !$aSearch['sHouseNumber'])
-                                                       {
-                                                               // Just looking for a country by code - look it up
-                                                               if (4 >= $this->iMinAddressRank && 4 <= $this->iMaxAddressRank)
-                                                               {
-                                                                       $sSQL = "select place_id from placex where calculated_country_code='".$aSearch['sCountryCode']."' and rank_search = 4";
-                                                                       if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
-                                                                       if ($bBoundingBoxSearch)
-                                                                               $sSQL .= " and _st_intersects($this->sViewboxSmallSQL, geometry)";
-                                                                       $sSQL .= " order by st_area(geometry) desc limit 1";
-                                                                       if (CONST_Debug) var_dump($sSQL);
-                                                                       $aPlaceIDs = $this->oDB->getCol($sSQL);
-                                                               }
-                                                               else
-                                                               {
-                                                                       $aPlaceIDs = array();
-                                                               }
-                                                       }
-                                                       else
-                                                       {
-                                                               if (!$bBoundingBoxSearch && !$aSearch['fLon']) continue;
-                                                               if (!$aSearch['sClass']) continue;
-                                                               $sSQL = "select count(*) from pg_tables where tablename = 'place_classtype_".$aSearch['sClass']."_".$aSearch['sType']."'";
-                                                               if ($this->oDB->getOne($sSQL))
-                                                               {
-                                                                       $sSQL = "select place_id from place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." ct";
-                                                                       if ($sCountryCodesSQL) $sSQL .= " join placex using (place_id)";
-                                                                       $sSQL .= " where st_contains($this->sViewboxSmallSQL, ct.centroid)";
-                                                                       if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
-                                                                       if (sizeof($this->aExcludePlaceIDs))
-                                                                       {
-                                                                               $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
-                                                                       }
-                                                                       if ($sViewboxCentreSQL) $sSQL .= " order by st_distance($sViewboxCentreSQL, ct.centroid) asc";
-                                                                       $sSQL .= " limit $this->iLimit";
-                                                                       if (CONST_Debug) var_dump($sSQL);
-                                                                       $aPlaceIDs = $this->oDB->getCol($sSQL);
-
-                                                                       // If excluded place IDs are given, it is fair to assume that
-                                                                       // there have been results in the small box, so no further
-                                                                       // expansion in that case.
-                                                                       // Also don't expand if bounded results were requested.
-                                                                       if (!sizeof($aPlaceIDs) && !sizeof($this->aExcludePlaceIDs) && !$this->bBoundedSearch)
-                                                                       {
-                                                                               $sSQL = "select place_id from place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." ct";
-                                                                               if ($sCountryCodesSQL) $sSQL .= " join placex using (place_id)";
-                                                                               $sSQL .= " where st_contains($this->sViewboxLargeSQL, ct.centroid)";
-                                                                               if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
-                                                                               if ($sViewboxCentreSQL) $sSQL .= " order by st_distance($sViewboxCentreSQL, ct.centroid) asc";
-                                                                               $sSQL .= " limit $this->iLimit";
-                                                                               if (CONST_Debug) var_dump($sSQL);
-                                                                               $aPlaceIDs = $this->oDB->getCol($sSQL);
-                                                                       }
-                                                               }
-                                                               else
-                                                               {
-                                                                       $sSQL = "select place_id from placex where class='".$aSearch['sClass']."' and type='".$aSearch['sType']."'";
-                                                                       $sSQL .= " and st_contains($this->sViewboxSmallSQL, geometry) and linked_place_id is null";
-                                                                       if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
-                                                                       if ($sViewboxCentreSQL) $sSQL .= " order by st_distance($sViewboxCentreSQL, centroid) asc";
-                                                                       $sSQL .= " limit $this->iLimit";
-                                                                       if (CONST_Debug) var_dump($sSQL);
-                                                                       $aPlaceIDs = $this->oDB->getCol($sSQL);
-                                                               }
-                                                       }
-                                               }
-                                               else
-                                               {
-                                                       $aPlaceIDs = array();
-
-                                                       // First we need a position, either aName or fLat or both
-                                                       $aTerms = array();
-                                                       $aOrder = array();
-
-                                                       if ($aSearch['sHouseNumber'] && sizeof($aSearch['aAddress']))
-                                                       {
-                                                               $sHouseNumberRegex = '\\\\m'.$aSearch['sHouseNumber'].'\\\\M';
-                                                               $aOrder[] = "exists(select place_id from placex where parent_place_id = search_name.place_id and transliteration(housenumber) ~* E'".$sHouseNumberRegex."' limit 1) desc";
-                                                       }
-
-                                                       // TODO: filter out the pointless search terms (2 letter name tokens and less)
-                                                       // they might be right - but they are just too darned expensive to run
-                                                       if (sizeof($aSearch['aName'])) $aTerms[] = "name_vector @> ARRAY[".join($aSearch['aName'],",")."]";
-                                                       if (sizeof($aSearch['aNameNonSearch'])) $aTerms[] = "array_cat(name_vector,ARRAY[]::integer[]) @> ARRAY[".join($aSearch['aNameNonSearch'],",")."]";
-                                                       if (sizeof($aSearch['aAddress']) && $aSearch['aName'] != $aSearch['aAddress'])
-                                                       {
-                                                               // For infrequent name terms disable index usage for address
-                                                               if (CONST_Search_NameOnlySearchFrequencyThreshold &&
-                                                                               sizeof($aSearch['aName']) == 1 &&
-                                                                               $aWordFrequencyScores[$aSearch['aName'][reset($aSearch['aName'])]] < CONST_Search_NameOnlySearchFrequencyThreshold)
-                                                               {
-                                                                       $aTerms[] = "array_cat(nameaddress_vector,ARRAY[]::integer[]) @> ARRAY[".join(array_merge($aSearch['aAddress'],$aSearch['aAddressNonSearch']),",")."]";
-                                                               }
-                                                               else
-                                                               {
-                                                                       $aTerms[] = "nameaddress_vector @> ARRAY[".join($aSearch['aAddress'],",")."]";
-                                                                       if (sizeof($aSearch['aAddressNonSearch'])) $aTerms[] = "array_cat(nameaddress_vector,ARRAY[]::integer[]) @> ARRAY[".join($aSearch['aAddressNonSearch'],",")."]";
-                                                               }
-                                                       }
-                                                       if ($aSearch['sCountryCode']) $aTerms[] = "country_code = '".pg_escape_string($aSearch['sCountryCode'])."'";
-                                                       if ($aSearch['sHouseNumber'])
-                                                       {
-                                                               $aTerms[] = "address_rank between 16 and 27";
-                                                       }
-                                                       else
-                                                       {
-                                                               if ($this->iMinAddressRank > 0)
-                                                               {
-                                                                       $aTerms[] = "address_rank >= ".$this->iMinAddressRank;
-                                                               }
-                                                               if ($this->iMaxAddressRank < 30)
-                                                               {
-                                                                       $aTerms[] = "address_rank <= ".$this->iMaxAddressRank;
-                                                               }
-                                                       }
-                                                       if ($aSearch['fLon'] && $aSearch['fLat'])
-                                                       {
-                                                               $aTerms[] = "ST_DWithin(centroid, ST_SetSRID(ST_Point(".$aSearch['fLon'].",".$aSearch['fLat']."),4326), ".$aSearch['fRadius'].")";
-                                                               $aOrder[] = "ST_Distance(centroid, ST_SetSRID(ST_Point(".$aSearch['fLon'].",".$aSearch['fLat']."),4326)) ASC";
-                                                       }
-                                                       if (sizeof($this->aExcludePlaceIDs))
-                                                       {
-                                                               $aTerms[] = "place_id not in (".join(',',$this->aExcludePlaceIDs).")";
-                                                       }
-                                                       if ($sCountryCodesSQL)
-                                                       {
-                                                               $aTerms[] = "country_code in ($sCountryCodesSQL)";
-                                                       }
-
-                                                       if ($bBoundingBoxSearch) $aTerms[] = "centroid && $this->sViewboxSmallSQL";
-                                                       if ($sNearPointSQL) $aOrder[] = "ST_Distance($sNearPointSQL, centroid) asc";
-
-                                                       if ($aSearch['sHouseNumber'])
-                                                       {
-                                                               $sImportanceSQL = '- abs(26 - address_rank) + 3';
-                                                       }
-                                                       else
-                                                       {
-                                                               $sImportanceSQL = '(case when importance = 0 OR importance IS NULL then 0.75-(search_rank::float/40) else importance end)';
-                                                       }
-                                                       if ($this->sViewboxSmallSQL) $sImportanceSQL .= " * case when ST_Contains($this->sViewboxSmallSQL, centroid) THEN 1 ELSE 0.5 END";
-                                                       if ($this->sViewboxLargeSQL) $sImportanceSQL .= " * case when ST_Contains($this->sViewboxLargeSQL, centroid) THEN 1 ELSE 0.5 END";
-
-                                                       $aOrder[] = "$sImportanceSQL DESC";
-                                                       if (sizeof($aSearch['aFullNameAddress']))
-                                                       {
-                                                               $sExactMatchSQL = '(select count(*) from (select unnest(ARRAY['.join($aSearch['aFullNameAddress'],",").']) INTERSECT select unnest(nameaddress_vector))s) as exactmatch';
-                                                               $aOrder[] = 'exactmatch DESC';
-                                                       } else {
-                                                               $sExactMatchSQL = '0::int as exactmatch';
-                                                       }
-
-                                                       if (sizeof($aTerms))
-                                                       {
-                                                               $sSQL = "select place_id, ";
-                                                               $sSQL .= $sExactMatchSQL;
-                                                               $sSQL .= " from search_name";
-                                                               $sSQL .= " where ".join(' and ',$aTerms);
-                                                               $sSQL .= " order by ".join(', ',$aOrder);
-                                                               if ($aSearch['sHouseNumber'] || $aSearch['sClass'])
-                                                                       $sSQL .= " limit 20";
-                                                               elseif (!sizeof($aSearch['aName']) && !sizeof($aSearch['aAddress']) && $aSearch['sClass'])
-                                                                       $sSQL .= " limit 1";
-                                                               else
-                                                                       $sSQL .= " limit ".$this->iLimit;
-
-                                                               if (CONST_Debug) { var_dump($sSQL); }
-                                                               $aViewBoxPlaceIDs = $this->oDB->getAll($sSQL);
-                                                               if (PEAR::IsError($aViewBoxPlaceIDs))
-                                                               {
-                                                                       failInternalError("Could not get places for search terms.", $sSQL, $aViewBoxPlaceIDs);
-                                                               }
-                                                               //var_dump($aViewBoxPlaceIDs);
-                                                               // Did we have an viewbox matches?
-                                                               $aPlaceIDs = array();
-                                                               $bViewBoxMatch = false;
-                                                               foreach($aViewBoxPlaceIDs as $aViewBoxRow)
-                                                               {
-                                                                       //if ($bViewBoxMatch == 1 && $aViewBoxRow['in_small'] == 'f') break;
-                                                                       //if ($bViewBoxMatch == 2 && $aViewBoxRow['in_large'] == 'f') break;
-                                                                       //if ($aViewBoxRow['in_small'] == 't') $bViewBoxMatch = 1;
-                                                                       //else if ($aViewBoxRow['in_large'] == 't') $bViewBoxMatch = 2;
-                                                                       $aPlaceIDs[] = $aViewBoxRow['place_id'];
-                                                                       $this->exactMatchCache[$aViewBoxRow['place_id']] = $aViewBoxRow['exactmatch'];
-                                                               }
-                                                       }
-                                                       //var_Dump($aPlaceIDs);
-                                                       //exit;
-
-                                                       //now search for housenumber, if housenumber provided
-                                                       if ($aSearch['sHouseNumber'] && sizeof($aPlaceIDs))
-                                                       {
-                                                               $aRoadPlaceIDs = $aPlaceIDs;
-                                                               $sPlaceIDs = join(',',$aPlaceIDs);
-
-                                                               // Now they are indexed look for a house attached to a street we found
-                                                               $sHouseNumberRegex = '\\\\m'.$aSearch['sHouseNumber'].'\\\\M';
-                                                               $sSQL = "select place_id from placex where parent_place_id in (".$sPlaceIDs.") and transliteration(housenumber) ~* E'".$sHouseNumberRegex."'";
-                                                               if (sizeof($this->aExcludePlaceIDs))
-                                                               {
-                                                                       $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
-                                                               }
-                                                               $sSQL .= " limit $this->iLimit";
-                                                               if (CONST_Debug) var_dump($sSQL);
-                                                               $aPlaceIDs = $this->oDB->getCol($sSQL);
-
-                                                               // If nothing found try the aux fallback table
-                                                               if (!sizeof($aPlaceIDs))
-                                                               {
-                                                                       $sSQL = "select place_id from location_property_aux where parent_place_id in (".$sPlaceIDs.") and housenumber = '".pg_escape_string($aSearch['sHouseNumber'])."'";
-                                                                       if (sizeof($this->aExcludePlaceIDs))
-                                                                       {
-                                                                               $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
-                                                                       }
-                                                                       //$sSQL .= " limit $this->iLimit";
-                                                                       if (CONST_Debug) var_dump($sSQL);
-                                                                       $aPlaceIDs = $this->oDB->getCol($sSQL);
-                                                               }
-                                                               //if nothing was found in placex or location_property_aux, then search in Tiger data for this housenumber(location_property_tiger)
-                                                               $searchedHousenumber = intval($aSearch['sHouseNumber']);
-                                                               if (!sizeof($aPlaceIDs))
-                                                               {
-                                                                       //new query for lines, not housenumbers anymore
-                                                                       if($searchedHousenumber%2 == 0){
-                                                                               //if housenumber is even, look for housenumber in streets with interpolationtype even or all
-                                                                               $sSQL = "select distinct place_id from location_property_tiger where parent_place_id in (".$sPlaceIDs.") and (interpolationtype='even' or interpolationtype='all') and ".$searchedHousenumber.">=startnumber and ".$searchedHousenumber."<=endnumber";
-                                                                       }else{
-                                                                               //look for housenumber in streets with interpolationtype odd or all
-                                                                               $sSQL = "select distinct place_id from location_property_tiger where parent_place_id in (".$sPlaceIDs.") and (interpolationtype='odd' or interpolationtype='all') and ".$searchedHousenumber.">=startnumber and ".$searchedHousenumber."<=endnumber";
-                                                                       }
-
-                                                                       if (sizeof($this->aExcludePlaceIDs))
-                                                                       {
-                                                                               $sSQL .= " and place_id not in (".join(',', $this->aExcludePlaceIDs).")";
-                                                                       }
-                                                                       //$sSQL .= " limit $this->iLimit";
-                                                                       if (CONST_Debug) var_dump($sSQL);
-                                                                       //get place IDs
-                                                                       $aPlaceIDs = $this->oDB->getCol($sSQL, 0);
-                                                               }
-
-                                                               // Fallback to the road (if no housenumber was found)
-                                                               if (!sizeof($aPlaceIDs) && preg_match('/[0-9]+/', $aSearch['sHouseNumber']))
-                                                               {
-                                                                       $aPlaceIDs = $aRoadPlaceIDs;
-                                                                       //set to -1, if no housenumbers were found
-                                                                       $searchedHousenumber = -1;
-                                                               }
-                                //else: housenumber was found, remains saved in searchedHousenumber
-                                                       }
-
-
-                                                       if ($aSearch['sClass'] && sizeof($aPlaceIDs))
-                                                       {
-                                                               $sPlaceIDs = join(',', $aPlaceIDs);
-                                                               $aClassPlaceIDs = array();
-
-                                                               if (!$aSearch['sOperator'] || $aSearch['sOperator'] == 'name')
-                                                               {
-                                                                       // If they were searching for a named class (i.e. 'Kings Head pub') then we might have an extra match
-                                                                       $sSQL = "select place_id from placex where place_id in ($sPlaceIDs) and class='".$aSearch['sClass']."' and type='".$aSearch['sType']."'";
-                                                                       $sSQL .= " and linked_place_id is null";
-                                                                       if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
-                                                                       $sSQL .= " order by rank_search asc limit $this->iLimit";
-                                                                       if (CONST_Debug) var_dump($sSQL);
-                                                                       $aClassPlaceIDs = $this->oDB->getCol($sSQL);
-                                                               }
-
-                                                               if (!$aSearch['sOperator'] || $aSearch['sOperator'] == 'near') // & in
-                                                               {
-                                                                       $sSQL = "select count(*) from pg_tables where tablename = 'place_classtype_".$aSearch['sClass']."_".$aSearch['sType']."'";
-                                                                       $bCacheTable = $this->oDB->getOne($sSQL);
-
-                                                                       $sSQL = "select min(rank_search) from placex where place_id in ($sPlaceIDs)";
-
-                                                                       if (CONST_Debug) var_dump($sSQL);
-                                                                       $this->iMaxRank = ((int)$this->oDB->getOne($sSQL));
-
-                                                                       // For state / country level searches the normal radius search doesn't work very well
-                                                                       $sPlaceGeom = false;
-                                                                       if ($this->iMaxRank < 9 && $bCacheTable)
-                                                                       {
-                                                                               // Try and get a polygon to search in instead
-                                                                               $sSQL = "select geometry from placex where place_id in ($sPlaceIDs) and rank_search < $this->iMaxRank + 5 and st_geometrytype(geometry) in ('ST_Polygon','ST_MultiPolygon') order by rank_search asc limit 1";
-                                                                               if (CONST_Debug) var_dump($sSQL);
-                                                                               $sPlaceGeom = $this->oDB->getOne($sSQL);
-                                                                       }
-
-                                                                       if ($sPlaceGeom)
-                                                                       {
-                                                                               $sPlaceIDs = false;
-                                                                       }
-                                                                       else
-                                                                       {
-                                                                               $this->iMaxRank += 5;
-                                                                               $sSQL = "select place_id from placex where place_id in ($sPlaceIDs) and rank_search < $this->iMaxRank";
-                                                                               if (CONST_Debug) var_dump($sSQL);
-                                                                               $aPlaceIDs = $this->oDB->getCol($sSQL);
-                                                                               $sPlaceIDs = join(',',$aPlaceIDs);
-                                                                       }
-
-                                                                       if ($sPlaceIDs || $sPlaceGeom)
-                                                                       {
-
-                                                                               $fRange = 0.01;
-                                                                               if ($bCacheTable)
-                                                                               {
-                                                                                       // More efficient - can make the range bigger
-                                                                                       $fRange = 0.05;
-
-                                                                                       $sOrderBySQL = '';
-                                                                                       if ($sNearPointSQL) $sOrderBySQL = "ST_Distance($sNearPointSQL, l.centroid)";
-                                                                                       else if ($sPlaceIDs) $sOrderBySQL = "ST_Distance(l.centroid, f.geometry)";
-                                                                                       else if ($sPlaceGeom) $sOrderBysSQL = "ST_Distance(st_centroid('".$sPlaceGeom."'), l.centroid)";
-
-                                                                                       $sSQL = "select distinct l.place_id".($sOrderBySQL?','.$sOrderBySQL:'')." from place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." as l";
-                                                                                       if ($sCountryCodesSQL) $sSQL .= " join placex as lp using (place_id)";
-                                                                                       if ($sPlaceIDs)
-                                                                                       {
-                                                                                               $sSQL .= ",placex as f where ";
-                                                                                               $sSQL .= "f.place_id in ($sPlaceIDs) and ST_DWithin(l.centroid, f.centroid, $fRange) ";
-                                                                                       }
-                                                                                       if ($sPlaceGeom)
-                                                                                       {
-                                                                                               $sSQL .= " where ";
-                                                                                               $sSQL .= "ST_Contains('".$sPlaceGeom."', l.centroid) ";
-                                                                                       }
-                                                                                       if (sizeof($this->aExcludePlaceIDs))
-                                                                                       {
-                                                                                               $sSQL .= " and l.place_id not in (".join(',',$this->aExcludePlaceIDs).")";
-                                                                                       }
-                                                                                       if ($sCountryCodesSQL) $sSQL .= " and lp.calculated_country_code in ($sCountryCodesSQL)";
-                                                                                       if ($sOrderBySQL) $sSQL .= "order by ".$sOrderBySQL." asc";
-                                                                                       if ($this->iOffset) $sSQL .= " offset $this->iOffset";
-                                                                                       $sSQL .= " limit $this->iLimit";
-                                                                                       if (CONST_Debug) var_dump($sSQL);
-                                                                                       $aClassPlaceIDs = array_merge($aClassPlaceIDs, $this->oDB->getCol($sSQL));
-                                                                               }
-                                                                               else
-                                                                               {
-                                                                                       if (isset($aSearch['fRadius']) && $aSearch['fRadius']) $fRange = $aSearch['fRadius'];
-
-                                                                                       $sOrderBySQL = '';
-                                                                                       if ($sNearPointSQL) $sOrderBySQL = "ST_Distance($sNearPointSQL, l.geometry)";
-                                                                                       else $sOrderBySQL = "ST_Distance(l.geometry, f.geometry)";
-
-                                                                                       $sSQL = "select distinct l.place_id".($sOrderBysSQL?','.$sOrderBysSQL:'')." from placex as l,placex as f where ";
-                                                                                       $sSQL .= "f.place_id in ( $sPlaceIDs) and ST_DWithin(l.geometry, f.centroid, $fRange) ";
-                                                                                       $sSQL .= "and l.class='".$aSearch['sClass']."' and l.type='".$aSearch['sType']."' ";
-                                                                                       if (sizeof($this->aExcludePlaceIDs))
-                                                                                       {
-                                                                                               $sSQL .= " and l.place_id not in (".join(',',$this->aExcludePlaceIDs).")";
-                                                                                       }
-                                                                                       if ($sCountryCodesSQL) $sSQL .= " and l.calculated_country_code in ($sCountryCodesSQL)";
-                                                                                       if ($sOrderBy) $sSQL .= "order by ".$OrderBysSQL." asc";
-                                                                                       if ($this->iOffset) $sSQL .= " offset $this->iOffset";
-                                                                                       $sSQL .= " limit $this->iLimit";
-                                                                                       if (CONST_Debug) var_dump($sSQL);
-                                                                                       $aClassPlaceIDs = array_merge($aClassPlaceIDs, $this->oDB->getCol($sSQL));
-                                                                               }
-                                                                       }
-                                                               }
-
-                                                               $aPlaceIDs = $aClassPlaceIDs;
-
-                                                       }
-
-                                               }
-
-                                               if (PEAR::IsError($aPlaceIDs))
-                                               {
-                                                       failInternalError("Could not get place IDs from tokens." ,$sSQL, $aPlaceIDs);
-                                               }
-
-                                               if (CONST_Debug) { echo "<br><b>Place IDs:</b> "; var_Dump($aPlaceIDs); }
-
-                                               foreach($aPlaceIDs as $iPlaceID)
-                                               {
-                                                       // array for placeID => -1 | Tiger housenumber
-                                                       $aResultPlaceIDs[$iPlaceID] = $searchedHousenumber;
-                                               }
-                                               if ($iQueryLoop > 20) break;
-                                       }
-
-                                       if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs) && ($this->iMinAddressRank != 0 || $this->iMaxAddressRank != 30))
-                                       {
-                                               // Need to verify passes rank limits before dropping out of the loop (yuk!)
-                                               // reduces the number of place ids, like a filter
-                                               $sSQL = "select place_id from placex where place_id in (".join(',',array_keys($aResultPlaceIDs)).") ";
-                                               $sSQL .= "and (placex.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
-                                               if (14 >= $this->iMinAddressRank && 14 <= $this->iMaxAddressRank) $sSQL .= " OR (extratags->'place') = 'city'";
-                                               if ($this->aAddressRankList) $sSQL .= " OR placex.rank_address in (".join(',',$this->aAddressRankList).")";
-                                               $sSQL .= ") UNION select place_id from location_property_tiger where place_id in (".join(',',array_keys($aResultPlaceIDs)).") ";
-                                               $sSQL .= "and (30 between $this->iMinAddressRank and $this->iMaxAddressRank ";
-                                               if ($this->aAddressRankList) $sSQL .= " OR 30 in (".join(',',$this->aAddressRankList).")";
-                                               $sSQL .= ")";
-                                               if (CONST_Debug) var_dump($sSQL);
-                                               $aFilteredPlaceIDs = $this->oDB->getCol($sSQL);
-                                               $tempIDs = array();
-                                               foreach($aFilteredPlaceIDs as $placeID)
-                        {
-                                                       $tempIDs[$placeID] = $aResultPlaceIDs[$placeID];  //assign housenumber to placeID
-                                               }
-                                               $aResultPlaceIDs = $tempIDs;
-                                       }
-
-                                       //exit;
-                                       if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs)) break;
-                                       if ($iGroupLoop > 4) break;
-                                       if ($iQueryLoop > 30) break;
-                               }
-
-                               // Did we find anything?
-                               if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs))
-                               {
-                                       $aSearchResults = $this->getDetails($aResultPlaceIDs);
-                               }
-
-                       }
-                       else
-                       {
-                               // Just interpret as a reverse geocode
-                               $iPlaceID = geocodeReverse((float)$this->aNearPoint[0], (float)$this->aNearPoint[1]);
-                               if ($iPlaceID)
-                                       $aSearchResults = $this->getDetails(array($iPlaceID));
-                               else
-                                       $aSearchResults = array();
-                       }
-
-                       // No results? Done
-                       if (!sizeof($aSearchResults))
-                       {
-                               if ($this->bFallback)
-                               {
-                                       if ($this->fallbackStructuredQuery())
-                                       {
-                                               return $this->lookup();
-                                       }
-                               }
-
-                               return array();
-                       }
-
-                       $aClassType = getClassTypesWithImportance();
-                       $aRecheckWords = preg_split('/\b[\s,\\-]*/u',$sQuery);
-                       foreach($aRecheckWords as $i => $sWord)
-                       {
-                               if (!preg_match('/\pL/', $sWord)) unset($aRecheckWords[$i]);
-                       }
-
-                       if (CONST_Debug) { echo '<i>Recheck words:<\i>'; var_dump($aRecheckWords); }
-
-                       foreach($aSearchResults as $iResNum => $aResult)
-                       {
-                               // Default
-                               $fDiameter = getResultDiameter($aResult);
-
-                               $oPlaceLookup = new PlaceLookup($this->oDB);
-                               $oPlaceLookup->setIncludePolygonAsPoints($this->bIncludePolygonAsPoints);
-                               $oPlaceLookup->setIncludePolygonAsText($this->bIncludePolygonAsText);
-                               $oPlaceLookup->setIncludePolygonAsGeoJSON($this->bIncludePolygonAsGeoJSON);
-                               $oPlaceLookup->setIncludePolygonAsKML($this->bIncludePolygonAsKML);
-                               $oPlaceLookup->setIncludePolygonAsSVG($this->bIncludePolygonAsSVG);
-                               $oPlaceLookup->setPolygonSimplificationThreshold($this->fPolygonSimplificationThreshold);
-
-                               $aOutlineResult = $oPlaceLookup->getOutlines($aResult['place_id'], $aResult['lon'], $aResult['lat'], $fDiameter/2);
-                               if ($aOutlineResult)
-                               {
-                                       $aResult = array_merge($aResult, $aOutlineResult);
-                               }
-                               
-                               if ($aResult['extra_place'] == 'city')
-                               {
-                                       $aResult['class'] = 'place';
-                                       $aResult['type'] = 'city';
-                                       $aResult['rank_search'] = 16;
-                               }
-
-                               // Is there an icon set for this type of result?
-                               if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['icon'])
-                                               && $aClassType[$aResult['class'].':'.$aResult['type']]['icon'])
-                               {
-                                       $aResult['icon'] = CONST_Website_BaseURL.'images/mapicons/'.$aClassType[$aResult['class'].':'.$aResult['type']]['icon'].'.p.20.png';
-                               }
-
-                               if (isset($aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'])
-                                               && $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'])
-                               {
-                                       $aResult['label'] = $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'];
-                               }
-                               elseif (isset($aClassType[$aResult['class'].':'.$aResult['type']]['label'])
-                                               && $aClassType[$aResult['class'].':'.$aResult['type']]['label'])
-                               {
-                                       $aResult['label'] = $aClassType[$aResult['class'].':'.$aResult['type']]['label'];
-                               }
-                               // if tag '&addressdetails=1' is set in query
-                               if ($this->bIncludeAddressDetails)
-                               {
-                                       // getAddressDetails() is defined in lib.php and uses the SQL function get_addressdata in functions.sql
-                                       $aResult['address'] = getAddressDetails($this->oDB, $sLanguagePrefArraySQL, $aResult['place_id'], $aResult['country_code'], $aResultPlaceIDs[$aResult['place_id']]);
-                                       if ($aResult['extra_place'] == 'city' && !isset($aResult['address']['city']))
-                                       {
-                                               $aResult['address'] = array_merge(array('city' => array_shift(array_values($aResult['address']))), $aResult['address']);
-                                       }
-                               }
-                               if ($this->bIncludeExtraTags)
-                               {
-                                       if ($aResult['extra'])
-                                       {
-                                               $aResult['sExtraTags'] = json_decode($aResult['extra']);
-                                       }
-                                       else
-                                       {
-                                               $aResult['sExtraTags'] = (object) array();
-                                       }
-                               }
-
-                               if ($this->bIncludeNameDetails)
-                               {
-                                       if ($aResult['names'])
-                                       {
-                                               $aResult['sNameDetails'] = json_decode($aResult['names']);
-                                       }
-                                       else
-                                       {
-                                               $aResult['sNameDetails'] = (object) array();
-                                       }
-                               }
-
-                               // Adjust importance for the number of exact string matches in the result
-                               $aResult['importance'] = max(0.001,$aResult['importance']);
-                               $iCountWords = 0;
-                               $sAddress = $aResult['langaddress'];
-                               foreach($aRecheckWords as $i => $sWord)
-                               {
-                                       if (stripos($sAddress, $sWord)!==false)
-                                       {
-                                               $iCountWords++;
-                                               if (preg_match("/(^|,)\s*".preg_quote($sWord, '/')."\s*(,|$)/", $sAddress)) $iCountWords += 0.1;
-                                       }
-                               }
-
-                               $aResult['importance'] = $aResult['importance'] + ($iCountWords*0.1); // 0.1 is a completely arbitrary number but something in the range 0.1 to 0.5 would seem right
-
-                               $aResult['name'] = $aResult['langaddress'];
-                               // secondary ordering (for results with same importance (the smaller the better):
-                               //   - approximate importance of address parts
-                               $aResult['foundorder'] = -$aResult['addressimportance']/10;
-                               //   - number of exact matches from the query
-                               if (isset($this->exactMatchCache[$aResult['place_id']]))
-                                       $aResult['foundorder'] -= $this->exactMatchCache[$aResult['place_id']];
-                               else if (isset($this->exactMatchCache[$aResult['parent_place_id']]))
-                                       $aResult['foundorder'] -= $this->exactMatchCache[$aResult['parent_place_id']];
-                               //  - importance of the class/type
-                               if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['importance'])
-                                       && $aClassType[$aResult['class'].':'.$aResult['type']]['importance'])
-                               {
-                                       $aResult['foundorder'] += 0.0001 * $aClassType[$aResult['class'].':'.$aResult['type']]['importance'];
-                               }
-                               else
-                               {
-                                       $aResult['foundorder'] += 0.01;
-                               }
-                               if (CONST_Debug) { var_dump($aResult); }
-                               $aSearchResults[$iResNum] = $aResult;
-                       }
-                       uasort($aSearchResults, 'byImportance');
-
-                       $aOSMIDDone = array();
-                       $aClassTypeNameDone = array();
-                       $aToFilter = $aSearchResults;
-                       $aSearchResults = array();
-
-                       $bFirst = true;
-                       foreach($aToFilter as $iResNum => $aResult)
-                       {
-                               $this->aExcludePlaceIDs[$aResult['place_id']] = $aResult['place_id'];
-                               if ($bFirst)
-                               {
-                                       $fLat = $aResult['lat'];
-                                       $fLon = $aResult['lon'];
-                                       if (isset($aResult['zoom'])) $iZoom = $aResult['zoom'];
-                                       $bFirst = false;
-                               }
-                               if (!$this->bDeDupe || (!isset($aOSMIDDone[$aResult['osm_type'].$aResult['osm_id']])
-                                                       && !isset($aClassTypeNameDone[$aResult['osm_type'].$aResult['class'].$aResult['type'].$aResult['name'].$aResult['admin_level']])))
-                               {
-                                       $aOSMIDDone[$aResult['osm_type'].$aResult['osm_id']] = true;
-                                       $aClassTypeNameDone[$aResult['osm_type'].$aResult['class'].$aResult['type'].$aResult['name'].$aResult['admin_level']] = true;
-                                       $aSearchResults[] = $aResult;
-                               }
-
-                               // Absolute limit on number of results
-                               if (sizeof($aSearchResults) >= $this->iFinalLimit) break;
-                       }
-
-                       return $aSearchResults;
-
-               } // end lookup()
-
-
-       } // end class
 
 
+namespace Nominatim;
+
+require_once(CONST_BasePath.'/lib/PlaceLookup.php');
+require_once(CONST_BasePath.'/lib/Phrase.php');
+require_once(CONST_BasePath.'/lib/ReverseGeocode.php');
+require_once(CONST_BasePath.'/lib/SearchDescription.php');
+require_once(CONST_BasePath.'/lib/SearchContext.php');
+
+class Geocode
+{
+    protected $oDB;
+
+    protected $oPlaceLookup;
+
+    protected $aLangPrefOrder = array();
+
+    protected $bIncludeAddressDetails = false;
+
+    protected $aExcludePlaceIDs = array();
+    protected $bReverseInPlan = true;
+
+    protected $iLimit = 20;
+    protected $iFinalLimit = 10;
+    protected $iOffset = 0;
+    protected $bFallback = false;
+
+    protected $aCountryCodes = false;
+
+    protected $bBoundedSearch = false;
+    protected $aViewBox = false;
+    protected $aRoutePoints = false;
+    protected $aRouteWidth = false;
+
+    protected $iMaxRank = 20;
+    protected $iMinAddressRank = 0;
+    protected $iMaxAddressRank = 30;
+    protected $aAddressRankList = array();
+
+    protected $sAllowedTypesSQLList = false;
+
+    protected $sQuery = false;
+    protected $aStructuredQuery = false;
+
+    protected $oNormalizer = null;
+
+
+    public function __construct(&$oDB)
+    {
+        $this->oDB =& $oDB;
+        $this->oPlaceLookup = new PlaceLookup($this->oDB);
+        $this->oNormalizer = \Transliterator::createFromRules(CONST_Term_Normalization_Rules);
+    }
+
+    private function normTerm($sTerm)
+    {
+        if ($this->oNormalizer === null) {
+            return $sTerm;
+        }
+
+        return $this->oNormalizer->transliterate($sTerm);
+    }
+
+    public function setReverseInPlan($bReverse)
+    {
+        $this->bReverseInPlan = $bReverse;
+    }
+
+    public function setLanguagePreference($aLangPref)
+    {
+        $this->aLangPrefOrder = $aLangPref;
+    }
+
+    public function getMoreUrlParams()
+    {
+        if ($this->aStructuredQuery) {
+            $aParams = $this->aStructuredQuery;
+        } else {
+            $aParams = array('q' => $this->sQuery);
+        }
+
+        $aParams = array_merge($aParams, $this->oPlaceLookup->getMoreUrlParams());
+
+        if ($this->aExcludePlaceIDs) {
+            $aParams['exclude_place_ids'] = implode(',', $this->aExcludePlaceIDs);
+        }
+
+        if ($this->bIncludeAddressDetails) $aParams['addressdetails'] = '1';
+        if ($this->bBoundedSearch) $aParams['bounded'] = '1';
+
+        if ($this->aCountryCodes) {
+            $aParams['countrycodes'] = implode(',', $this->aCountryCodes);
+        }
+
+        if ($this->aViewBox) {
+            $aParams['viewbox'] = join(',', $this->aViewBox);
+        }
+
+        return $aParams;
+    }
+
+    public function setLimit($iLimit = 10)
+    {
+        if ($iLimit > 50) $iLimit = 50;
+        if ($iLimit < 1) $iLimit = 1;
+
+        $this->iFinalLimit = $iLimit;
+        $this->iLimit = $iLimit + min($iLimit, 10);
+    }
+
+    public function setFeatureType($sFeatureType)
+    {
+        switch ($sFeatureType) {
+            case 'country':
+                $this->setRankRange(4, 4);
+                break;
+            case 'state':
+                $this->setRankRange(8, 8);
+                break;
+            case 'city':
+                $this->setRankRange(14, 16);
+                break;
+            case 'settlement':
+                $this->setRankRange(8, 20);
+                break;
+        }
+    }
+
+    public function setRankRange($iMin, $iMax)
+    {
+        $this->iMinAddressRank = $iMin;
+        $this->iMaxAddressRank = $iMax;
+    }
+
+    public function setViewbox($aViewbox)
+    {
+        $aBox = array_map('floatval', $aViewbox);
+
+        $this->aViewBox[0] = max(-180.0, min($aBox[0], $aBox[2]));
+        $this->aViewBox[1] = max(-90.0, min($aBox[1], $aBox[3]));
+        $this->aViewBox[2] = min(180.0, max($aBox[0], $aBox[2]));
+        $this->aViewBox[3] = min(90.0, max($aBox[1], $aBox[3]));
+
+        if ($this->aViewBox[2] - $this->aViewBox[0] < 0.000000001
+            || $this->aViewBox[3] - $this->aViewBox[1] < 0.000000001
+        ) {
+            userError("Bad parameter 'viewbox'. Not a box.");
+        }
+    }
+
+    private function viewboxImportanceFactor($fX, $fY)
+    {
+        $fWidth = ($this->aViewBox[2] - $this->aViewBox[0])/2;
+        $fHeight = ($this->aViewBox[3] - $this->aViewBox[1])/2;
+
+        $fXDist = abs($fX - ($this->aViewBox[0] + $this->aViewBox[2])/2);
+        $fYDist = abs($fY - ($this->aViewBox[1] + $this->aViewBox[3])/2);
+
+        if ($fXDist <= $fWidth && $fYDist <= $fHeight) {
+            return 1;
+        }
+
+        if ($fXDist <= $fWidth * 3 && $fYDist <= 3 * $fHeight) {
+            return 0.5;
+        }
+
+        return 0.25;
+    }
+
+    public function setQuery($sQueryString)
+    {
+        $this->sQuery = $sQueryString;
+        $this->aStructuredQuery = false;
+    }
+
+    public function getQueryString()
+    {
+        return $this->sQuery;
+    }
+
+
+    public function loadParamArray($oParams, $sForceGeometryType = null)
+    {
+        $this->bIncludeAddressDetails
+         = $oParams->getBool('addressdetails', $this->bIncludeAddressDetails);
+
+        $this->bBoundedSearch = $oParams->getBool('bounded', $this->bBoundedSearch);
+
+        $this->setLimit($oParams->getInt('limit', $this->iFinalLimit));
+        $this->iOffset = $oParams->getInt('offset', $this->iOffset);
+
+        $this->bFallback = $oParams->getBool('fallback', $this->bFallback);
+
+        // List of excluded Place IDs - used for more acurate pageing
+        $sExcluded = $oParams->getStringList('exclude_place_ids');
+        if ($sExcluded) {
+            foreach ($sExcluded as $iExcludedPlaceID) {
+                $iExcludedPlaceID = (int)$iExcludedPlaceID;
+                if ($iExcludedPlaceID)
+                    $aExcludePlaceIDs[$iExcludedPlaceID] = $iExcludedPlaceID;
+            }
+
+            if (isset($aExcludePlaceIDs))
+                $this->aExcludePlaceIDs = $aExcludePlaceIDs;
+        }
+
+        // Only certain ranks of feature
+        $sFeatureType = $oParams->getString('featureType');
+        if (!$sFeatureType) $sFeatureType = $oParams->getString('featuretype');
+        if ($sFeatureType) $this->setFeatureType($sFeatureType);
+
+        // Country code list
+        $sCountries = $oParams->getStringList('countrycodes');
+        if ($sCountries) {
+            foreach ($sCountries as $sCountryCode) {
+                if (preg_match('/^[a-zA-Z][a-zA-Z]$/', $sCountryCode)) {
+                    $aCountries[] = strtolower($sCountryCode);
+                }
+            }
+            if (isset($aCountries))
+                $this->aCountryCodes = $aCountries;
+        }
+
+        $aViewbox = $oParams->getStringList('viewboxlbrt');
+        if ($aViewbox) {
+            if (count($aViewbox) != 4) {
+                userError("Bad parmater 'viewboxlbrt'. Expected 4 coordinates.");
+            }
+            $this->setViewbox($aViewbox);
+        } else {
+            $aViewbox = $oParams->getStringList('viewbox');
+            if ($aViewbox) {
+                if (count($aViewbox) != 4) {
+                    userError("Bad parmater 'viewbox'. Expected 4 coordinates.");
+                }
+                $this->setViewBox($aViewbox);
+            } else {
+                $aRoute = $oParams->getStringList('route');
+                $fRouteWidth = $oParams->getFloat('routewidth');
+                if ($aRoute && $fRouteWidth) {
+                    $this->aRoutePoints = $aRoute;
+                    $this->aRouteWidth = $fRouteWidth;
+                }
+            }
+        }
+
+        $this->oPlaceLookup->loadParamArray($oParams, $sForceGeometryType);
+        $this->oPlaceLookup->setIncludeAddressDetails(false);
+        $this->oPlaceLookup->setIncludePolygonAsPoints($oParams->getBool('polygon'));
+    }
+
+    public function setQueryFromParams($oParams)
+    {
+        // Search query
+        $sQuery = $oParams->getString('q');
+        if (!$sQuery) {
+            $this->setStructuredQuery(
+                $oParams->getString('amenity'),
+                $oParams->getString('street'),
+                $oParams->getString('city'),
+                $oParams->getString('county'),
+                $oParams->getString('state'),
+                $oParams->getString('country'),
+                $oParams->getString('postalcode')
+            );
+            $this->setReverseInPlan(false);
+        } else {
+            $this->setQuery($sQuery);
+        }
+    }
+
+    public function loadStructuredAddressElement($sValue, $sKey, $iNewMinAddressRank, $iNewMaxAddressRank, $aItemListValues)
+    {
+        $sValue = trim($sValue);
+        if (!$sValue) return false;
+        $this->aStructuredQuery[$sKey] = $sValue;
+        if ($this->iMinAddressRank == 0 && $this->iMaxAddressRank == 30) {
+            $this->iMinAddressRank = $iNewMinAddressRank;
+            $this->iMaxAddressRank = $iNewMaxAddressRank;
+        }
+        if ($aItemListValues) $this->aAddressRankList = array_merge($this->aAddressRankList, $aItemListValues);
+        return true;
+    }
+
+    public function setStructuredQuery($sAmenity = false, $sStreet = false, $sCity = false, $sCounty = false, $sState = false, $sCountry = false, $sPostalCode = false)
+    {
+        $this->sQuery = false;
+
+        // Reset
+        $this->iMinAddressRank = 0;
+        $this->iMaxAddressRank = 30;
+        $this->aAddressRankList = array();
+
+        $this->aStructuredQuery = array();
+        $this->sAllowedTypesSQLList = false;
+
+        $this->loadStructuredAddressElement($sAmenity, 'amenity', 26, 30, false);
+        $this->loadStructuredAddressElement($sStreet, 'street', 26, 30, false);
+        $this->loadStructuredAddressElement($sCity, 'city', 14, 24, false);
+        $this->loadStructuredAddressElement($sCounty, 'county', 9, 13, false);
+        $this->loadStructuredAddressElement($sState, 'state', 8, 8, false);
+        $this->loadStructuredAddressElement($sPostalCode, 'postalcode', 5, 11, array(5, 11));
+        $this->loadStructuredAddressElement($sCountry, 'country', 4, 4, false);
+
+        if (sizeof($this->aStructuredQuery) > 0) {
+            $this->sQuery = join(', ', $this->aStructuredQuery);
+            if ($this->iMaxAddressRank < 30) {
+                $this->sAllowedTypesSQLList = '(\'place\',\'boundary\')';
+            }
+        }
+    }
+
+    public function fallbackStructuredQuery()
+    {
+        if (!$this->aStructuredQuery) return false;
+
+        $aParams = $this->aStructuredQuery;
+
+        if (sizeof($aParams) == 1) return false;
+
+        $aOrderToFallback = array('postalcode', 'street', 'city', 'county', 'state');
+
+        foreach ($aOrderToFallback as $sType) {
+            if (isset($aParams[$sType])) {
+                unset($aParams[$sType]);
+                $this->setStructuredQuery(@$aParams['amenity'], @$aParams['street'], @$aParams['city'], @$aParams['county'], @$aParams['state'], @$aParams['country'], @$aParams['postalcode']);
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public function getGroupedSearches($aSearches, $aPhrases, $aValidTokens, $bIsStructured)
+    {
+        /*
+             Calculate all searches using aValidTokens i.e.
+             'Wodsworth Road, Sheffield' =>
+
+             Phrase Wordset
+             0      0       (wodsworth road)
+             0      1       (wodsworth)(road)
+             1      0       (sheffield)
+
+             Score how good the search is so they can be ordered
+         */
+        foreach ($aPhrases as $iPhrase => $oPhrase) {
+            $aNewPhraseSearches = array();
+            $sPhraseType = $bIsStructured ? $oPhrase->getPhraseType() : '';
+
+            foreach ($oPhrase->getWordSets() as $iWordSet => $aWordset) {
+                // Too many permutations - too expensive
+                if ($iWordSet > 120) break;
+
+                $aWordsetSearches = $aSearches;
+
+                // Add all words from this wordset
+                foreach ($aWordset as $iToken => $sToken) {
+                    //echo "<br><b>$sToken</b>";
+                    $aNewWordsetSearches = array();
+
+                    foreach ($aWordsetSearches as $oCurrentSearch) {
+                        //echo "<i>";
+                        //var_dump($oCurrentSearch);
+                        //echo "</i>";
+
+                        // If the token is valid
+                        if (isset($aValidTokens[' '.$sToken])) {
+                            foreach ($aValidTokens[' '.$sToken] as $aSearchTerm) {
+                                $aNewSearches = $oCurrentSearch->extendWithFullTerm(
+                                    $aSearchTerm,
+                                    isset($aValidTokens[$sToken])
+                                      && strpos($sToken, ' ') === false,
+                                    $sPhraseType,
+                                    $iToken == 0 && $iPhrase == 0,
+                                    $iPhrase == 0,
+                                    $iToken + 1 == sizeof($aWordset)
+                                      && $iPhrase + 1 == sizeof($aPhrases)
+                                );
+
+                                foreach ($aNewSearches as $oSearch) {
+                                    if ($oSearch->getRank() < $this->iMaxRank) {
+                                        $aNewWordsetSearches[] = $oSearch;
+                                    }
+                                }
+                            }
+                        }
+                        // Look for partial matches.
+                        // Note that there is no point in adding country terms here
+                        // because country is omitted in the address.
+                        if (isset($aValidTokens[$sToken]) && $sPhraseType != 'country') {
+                            // Allow searching for a word - but at extra cost
+                            foreach ($aValidTokens[$sToken] as $aSearchTerm) {
+                                $aNewSearches = $oCurrentSearch->extendWithPartialTerm(
+                                    $aSearchTerm,
+                                    $bIsStructured,
+                                    $iPhrase,
+                                    isset($aValidTokens[' '.$sToken]) ? $aValidTokens[' '.$sToken] : array()
+                                );
+
+                                foreach ($aNewSearches as $oSearch) {
+                                    if ($oSearch->getRank() < $this->iMaxRank) {
+                                        $aNewWordsetSearches[] = $oSearch;
+                                    }
+                                }
+                            }
+                        }
+                    }
+                    // Sort and cut
+                    usort($aNewWordsetSearches, array('Nominatim\SearchDescription', 'bySearchRank'));
+                    $aWordsetSearches = array_slice($aNewWordsetSearches, 0, 50);
+                }
+                //var_Dump('<hr>',sizeof($aWordsetSearches)); exit;
+
+                $aNewPhraseSearches = array_merge($aNewPhraseSearches, $aNewWordsetSearches);
+                usort($aNewPhraseSearches, array('Nominatim\SearchDescription', 'bySearchRank'));
+
+                $aSearchHash = array();
+                foreach ($aNewPhraseSearches as $iSearch => $aSearch) {
+                    $sHash = serialize($aSearch);
+                    if (isset($aSearchHash[$sHash])) unset($aNewPhraseSearches[$iSearch]);
+                    else $aSearchHash[$sHash] = 1;
+                }
+
+                $aNewPhraseSearches = array_slice($aNewPhraseSearches, 0, 50);
+            }
+
+            // Re-group the searches by their score, junk anything over 20 as just not worth trying
+            $aGroupedSearches = array();
+            foreach ($aNewPhraseSearches as $aSearch) {
+                $iRank = $aSearch->getRank();
+                if ($iRank < $this->iMaxRank) {
+                    if (!isset($aGroupedSearches[$iRank])) {
+                        $aGroupedSearches[$iRank] = array();
+                    }
+                    $aGroupedSearches[$iRank][] = $aSearch;
+                }
+            }
+            ksort($aGroupedSearches);
+
+            $iSearchCount = 0;
+            $aSearches = array();
+            foreach ($aGroupedSearches as $iScore => $aNewSearches) {
+                $iSearchCount += sizeof($aNewSearches);
+                $aSearches = array_merge($aSearches, $aNewSearches);
+                if ($iSearchCount > 50) break;
+            }
+
+            //if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
+        }
+
+        // Revisit searches, drop bad searches and give penalty to unlikely combinations.
+        $aGroupedSearches = array();
+        foreach ($aSearches as $oSearch) {
+            if (!$oSearch->isValidSearch()) {
+                continue;
+            }
+
+            $iRank = $oSearch->getRank();
+            if (!isset($aGroupedSearches[$iRank])) {
+                $aGroupedSearches[$iRank] = array();
+            }
+            $aGroupedSearches[$iRank][] = $oSearch;
+        }
+        ksort($aGroupedSearches);
+
+        return $aGroupedSearches;
+    }
+
+    /* Perform the actual query lookup.
+
+        Returns an ordered list of results, each with the following fields:
+            osm_type: type of corresponding OSM object
+                        N - node
+                        W - way
+                        R - relation
+                        P - postcode (internally computed)
+            osm_id: id of corresponding OSM object
+            class: general object class (corresponds to tag key of primary OSM tag)
+            type: subclass of object (corresponds to tag value of primary OSM tag)
+            admin_level: see http://wiki.openstreetmap.org/wiki/Admin_level
+            rank_search: rank in search hierarchy
+                        (see also http://wiki.openstreetmap.org/wiki/Nominatim/Development_overview#Country_to_street_level)
+            rank_address: rank in address hierarchy (determines orer in address)
+            place_id: internal key (may differ between different instances)
+            country_code: ISO country code
+            langaddress: localized full address
+            placename: localized name of object
+            ref: content of ref tag (if available)
+            lon: longitude
+            lat: latitude
+            importance: importance of place based on Wikipedia link count
+            addressimportance: cumulated importance of address elements
+            extra_place: type of place (for admin boundaries, if there is a place tag)
+            aBoundingBox: bounding Box
+            label: short description of the object class/type (English only)
+            name: full name (currently the same as langaddress)
+            foundorder: secondary ordering for places with same importance
+    */
+
+
+    public function lookup()
+    {
+        if (!$this->sQuery && !$this->aStructuredQuery) return array();
+
+        $oCtx = new SearchContext();
+
+        if ($this->aRoutePoints) {
+            $oCtx->setViewboxFromRoute(
+                $this->oDB,
+                $this->aRoutePoints,
+                $this->aRouteWidth,
+                $this->bBoundedSearch
+            );
+        } elseif ($this->aViewBox) {
+            $oCtx->setViewboxFromBox($this->aViewBox, $this->bBoundedSearch);
+        }
+        if ($this->aExcludePlaceIDs) {
+            $oCtx->setExcludeList($this->aExcludePlaceIDs);
+        }
+        if ($this->aCountryCodes) {
+            $oCtx->setCountryList($this->aCountryCodes);
+        }
+
+        $sNormQuery = $this->normTerm($this->sQuery);
+        $sLanguagePrefArraySQL = getArraySQL(
+            array_map('getDBQuoted', $this->aLangPrefOrder)
+        );
+
+        $sQuery = $this->sQuery;
+        if (!preg_match('//u', $sQuery)) {
+            userError('Query string is not UTF-8 encoded.');
+        }
+
+        // Conflicts between US state abreviations and various words for 'the' in different languages
+        if (isset($this->aLangPrefOrder['name:en'])) {
+            $sQuery = preg_replace('/(^|,)\s*il\s*(,|$)/', '\1illinois\2', $sQuery);
+            $sQuery = preg_replace('/(^|,)\s*al\s*(,|$)/', '\1alabama\2', $sQuery);
+            $sQuery = preg_replace('/(^|,)\s*la\s*(,|$)/', '\1louisiana\2', $sQuery);
+        }
+
+        // Do we have anything that looks like a lat/lon pair?
+        $sQuery = $oCtx->setNearPointFromQuery($sQuery);
+
+        $aResults = array();
+        if ($sQuery || $this->aStructuredQuery) {
+            // Start with a single blank search
+            $aSearches = array(new SearchDescription($oCtx));
+
+            if ($sQuery) {
+                $sQuery = $aSearches[0]->extractKeyValuePairs($sQuery);
+            }
+
+            $sSpecialTerm = '';
+            if ($sQuery) {
+                preg_match_all(
+                    '/\\[([\\w ]*)\\]/u',
+                    $sQuery,
+                    $aSpecialTermsRaw,
+                    PREG_SET_ORDER
+                );
+                foreach ($aSpecialTermsRaw as $aSpecialTerm) {
+                    $sQuery = str_replace($aSpecialTerm[0], ' ', $sQuery);
+                    if (!$sSpecialTerm) {
+                        $sSpecialTerm = $aSpecialTerm[1];
+                    }
+                }
+            }
+            if (!$sSpecialTerm && $this->aStructuredQuery
+                && isset($this->aStructuredQuery['amenity'])) {
+                $sSpecialTerm = $this->aStructuredQuery['amenity'];
+                unset($this->aStructuredQuery['amenity']);
+            }
+
+            if ($sSpecialTerm && !$aSearches[0]->hasOperator()) {
+                $sSpecialTerm = pg_escape_string($sSpecialTerm);
+                $sToken = chksql(
+                    $this->oDB->getOne("SELECT make_standard_name('$sSpecialTerm')"),
+                    'Cannot decode query. Wrong encoding?'
+                );
+                $sSQL = 'SELECT class, type FROM word ';
+                $sSQL .= '   WHERE word_token in (\' '.$sToken.'\')';
+                $sSQL .= '   AND class is not null AND class not in (\'place\')';
+                if (CONST_Debug) var_Dump($sSQL);
+                $aSearchWords = chksql($this->oDB->getAll($sSQL));
+                $aNewSearches = array();
+                foreach ($aSearches as $oSearch) {
+                    foreach ($aSearchWords as $aSearchTerm) {
+                        $oNewSearch = clone $oSearch;
+                        $oNewSearch->setPoiSearch(
+                            Operator::TYPE,
+                            $aSearchTerm['class'],
+                            $aSearchTerm['type']
+                        );
+                        $aNewSearches[] = $oNewSearch;
+                    }
+                }
+                $aSearches = $aNewSearches;
+            }
+
+            // Split query into phrases
+            // Commas are used to reduce the search space by indicating where phrases split
+            if ($this->aStructuredQuery) {
+                $aInPhrases = $this->aStructuredQuery;
+                $bStructuredPhrases = true;
+            } else {
+                $aInPhrases = explode(',', $sQuery);
+                $bStructuredPhrases = false;
+            }
+
+            // Convert each phrase to standard form
+            // Create a list of standard words
+            // Get all 'sets' of words
+            // Generate a complete list of all
+            $aTokens = array();
+            $aPhrases = array();
+            foreach ($aInPhrases as $iPhrase => $sPhrase) {
+                $sPhrase = chksql(
+                    $this->oDB->getOne('SELECT make_standard_name('.getDBQuoted($sPhrase).')'),
+                    'Cannot normalize query string (is it a UTF-8 string?)'
+                );
+                if (trim($sPhrase)) {
+                    $oPhrase = new Phrase($sPhrase, is_string($iPhrase) ? $iPhrase : '');
+                    $oPhrase->addTokens($aTokens);
+                    $aPhrases[] = $oPhrase;
+                }
+            }
+
+            if (sizeof($aTokens)) {
+                // Check which tokens we have, get the ID numbers
+                $sSQL = 'SELECT word_id, word_token, word, class, type, country_code, operator, search_name_count';
+                $sSQL .= ' FROM word ';
+                $sSQL .= ' WHERE word_token in ('.join(',', array_map('getDBQuoted', $aTokens)).')';
+
+                if (CONST_Debug) var_Dump($sSQL);
+
+                $aValidTokens = array();
+                $aDatabaseWords = chksql(
+                    $this->oDB->getAll($sSQL),
+                    'Could not get word tokens.'
+                );
+                $aWordFrequencyScores = array();
+                foreach ($aDatabaseWords as $aToken) {
+                    // Filter country tokens that do not match restricted countries.
+                    if ($this->aCountryCodes
+                        && $aToken['country_code']
+                        && !in_array($aToken['country_code'], $this->aCountryCodes)
+                    ) {
+                        continue;
+                    }
+
+                    // Special terms need to appear in their normalized form.
+                    if ($aToken['word'] && $aToken['class']) {
+                        $sNormWord = $this->normTerm($aToken['word']);
+                        if (strpos($sNormQuery, $sNormWord) === false) {
+                            continue;
+                        }
+                    }
+
+                    if (isset($aValidTokens[$aToken['word_token']])) {
+                        $aValidTokens[$aToken['word_token']][] = $aToken;
+                    } else {
+                        $aValidTokens[$aToken['word_token']] = array($aToken);
+                    }
+                    $aWordFrequencyScores[$aToken['word_id']] = $aToken['search_name_count'] + 1;
+                }
+                if (CONST_Debug) var_Dump($aPhrases, $aValidTokens);
+
+                // US ZIP+4 codes - if there is no token, merge in the 5-digit ZIP code
+                foreach ($aTokens as $sToken) {
+                    if (!isset($aValidTokens[$sToken]) && preg_match('/^([0-9]{5}) [0-9]{4}$/', $sToken, $aData)) {
+                        if (isset($aValidTokens[$aData[1]])) {
+                            foreach ($aValidTokens[$aData[1]] as $aToken) {
+                                if (!$aToken['class']) {
+                                    if (isset($aValidTokens[$sToken])) {
+                                        $aValidTokens[$sToken][] = $aToken;
+                                    } else {
+                                        $aValidTokens[$sToken] = array($aToken);
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+
+                foreach ($aTokens as $sToken) {
+                    // Unknown single word token with a number - assume it is a house number
+                    if (!isset($aValidTokens[' '.$sToken]) && strpos($sToken, ' ') === false && preg_match('/^[0-9]+$/', $sToken)) {
+                        $aValidTokens[' '.$sToken] = array(array('class' => 'place', 'type' => 'house', 'word_token' => ' '.$sToken));
+                    }
+                }
+
+                // Any words that have failed completely?
+                // TODO: suggestions
+
+                $aGroupedSearches = $this->getGroupedSearches($aSearches, $aPhrases, $aValidTokens, $bStructuredPhrases);
+
+                if ($this->bReverseInPlan) {
+                    // Reverse phrase array and also reverse the order of the wordsets in
+                    // the first and final phrase. Don't bother about phrases in the middle
+                    // because order in the address doesn't matter.
+                    $aPhrases = array_reverse($aPhrases);
+                    $aPhrases[0]->invertWordSets();
+                    if (sizeof($aPhrases) > 1) {
+                        $aPhrases[sizeof($aPhrases)-1]->invertWordSets();
+                    }
+                    $aReverseGroupedSearches = $this->getGroupedSearches($aSearches, $aPhrases, $aValidTokens, false);
+
+                    foreach ($aGroupedSearches as $aSearches) {
+                        foreach ($aSearches as $aSearch) {
+                            if (!isset($aReverseGroupedSearches[$aSearch->getRank()])) {
+                                $aReverseGroupedSearches[$aSearch->getRank()] = array();
+                            }
+                            $aReverseGroupedSearches[$aSearch->getRank()][] = $aSearch;
+                        }
+                    }
+
+                    $aGroupedSearches = $aReverseGroupedSearches;
+                    ksort($aGroupedSearches);
+                }
+            } else {
+                // Re-group the searches by their score, junk anything over 20 as just not worth trying
+                $aGroupedSearches = array();
+                foreach ($aSearches as $aSearch) {
+                    if ($aSearch->getRank() < $this->iMaxRank) {
+                        if (!isset($aGroupedSearches[$aSearch->getRank()])) $aGroupedSearches[$aSearch->getRank()] = array();
+                        $aGroupedSearches[$aSearch->getRank()][] = $aSearch;
+                    }
+                }
+                ksort($aGroupedSearches);
+            }
+
+            // Filter out duplicate searches
+            $aSearchHash = array();
+            foreach ($aGroupedSearches as $iGroup => $aSearches) {
+                foreach ($aSearches as $iSearch => $aSearch) {
+                    $sHash = serialize($aSearch);
+                    if (isset($aSearchHash[$sHash])) {
+                        unset($aGroupedSearches[$iGroup][$iSearch]);
+                        if (sizeof($aGroupedSearches[$iGroup]) == 0) unset($aGroupedSearches[$iGroup]);
+                    } else {
+                        $aSearchHash[$sHash] = 1;
+                    }
+                }
+            }
+
+            if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
+
+            // Start the search process
+            $iGroupLoop = 0;
+            $iQueryLoop = 0;
+            foreach ($aGroupedSearches as $iGroupedRank => $aSearches) {
+                $iGroupLoop++;
+                foreach ($aSearches as $oSearch) {
+                    $iQueryLoop++;
+
+                    if (CONST_Debug) {
+                        echo "<hr><b>Search Loop, group $iGroupLoop, loop $iQueryLoop</b>";
+                        _debugDumpGroupedSearches(array($iGroupedRank => array($oSearch)), $aValidTokens);
+                    }
+
+                    $aResults += $oSearch->query(
+                        $this->oDB,
+                        $aWordFrequencyScores,
+                        $this->iMinAddressRank,
+                        $this->iMaxAddressRank,
+                        $this->iLimit
+                    );
+
+                    if ($iQueryLoop > 20) break;
+                }
+
+                if (sizeof($aResults) && ($this->iMinAddressRank != 0 || $this->iMaxAddressRank != 30)) {
+                    // Need to verify passes rank limits before dropping out of the loop (yuk!)
+                    // reduces the number of place ids, like a filter
+                    // rank_address is 30 for interpolated housenumbers
+                    $aFilterSql = array();
+                    $sPlaceIds = Result::joinIdsByTable($aResults, Result::TABLE_PLACEX);
+                    if ($sPlaceIds) {
+                        $sSQL = 'SELECT place_id FROM placex ';
+                        $sSQL .= 'WHERE place_id in ('.$sPlaceIds.') ';
+                        $sSQL .= '  AND (';
+                        $sSQL .= "         placex.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
+                        if (14 >= $this->iMinAddressRank && 14 <= $this->iMaxAddressRank) {
+                            $sSQL .= "     OR (extratags->'place') = 'city'";
+                        }
+                        if ($this->aAddressRankList) {
+                            $sSQL .= '     OR placex.rank_address in ('.join(',', $this->aAddressRankList).')';
+                        }
+                        $sSQL .= ')';
+                        $aFilterSql[] = $sSQL;
+                    }
+                    $sPlaceIds = Result::joinIdsByTable($aResults, Result::TABLE_POSTCODE);
+                    if ($sPlaceIds) {
+                        $sSQL = ' SELECT place_id FROM location_postcode lp ';
+                        $sSQL .= 'WHERE place_id in ('.$sPlaceIds.') ';
+                        $sSQL .= "  AND (lp.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
+                        if ($this->aAddressRankList) {
+                            $sSQL .= '     OR lp.rank_address in ('.join(',', $this->aAddressRankList).')';
+                        }
+                        $sSQL .= ') ';
+                        $aFilterSql[] = $sSQL;
+                    }
+
+                    $aFilteredIDs = array();
+                    if ($aFilterSql) {
+                        $sSQL = join(' UNION ', $aFilterSql);
+                        if (CONST_Debug) var_dump($sSQL);
+                        $aFilteredIDs = chksql($this->oDB->getCol($sSQL));
+                    }
+
+                    $tempIDs = array();
+                    foreach ($aResults as $oResult) {
+                        if (($this->iMaxAddressRank == 30 &&
+                             ($oResult->iTable == Result::TABLE_OSMLINE
+                              || $oResult->iTable == Result::TABLE_AUX
+                              || $oResult->iTable == Result::TABLE_TIGER))
+                            || in_array($oResult->iId, $aFilteredIDs)
+                        ) {
+                            $tempIDs[$oResult->iId] = $oResult;
+                        }
+                    }
+                    $aResults = $tempIDs;
+                }
+
+                if (sizeof($aResults)) break;
+                if ($iGroupLoop > 4) break;
+                if ($iQueryLoop > 30) break;
+            }
+        } else {
+            // Just interpret as a reverse geocode
+            $oReverse = new ReverseGeocode($this->oDB);
+            $oReverse->setZoom(18);
+
+            $oLookup = $oReverse->lookupPoint($oCtx->sqlNear, false);
+
+            if (CONST_Debug) var_dump('Reverse search', $aLookup);
+
+            if ($oLookup) {
+                $aResults = array($oLookup->iId => $oLookup);
+            }
+        }
+
+        // No results? Done
+        if (!sizeof($aResults)) {
+            if ($this->bFallback) {
+                if ($this->fallbackStructuredQuery()) {
+                    return $this->lookup();
+                }
+            }
+
+            return array();
+        }
+
+        if ($this->aAddressRankList) {
+            $this->oPlaceLookup->setAddressRankList($this->aAddressRankList);
+        }
+        $this->oPlaceLookup->setAllowedTypesSQLList($this->sAllowedTypesSQLList);
+        $this->oPlaceLookup->setLanguagePreference($this->aLangPrefOrder);
+        if ($oCtx->hasNearPoint()) {
+            $this->oPlaceLookup->setAnchorSql($oCtx->sqlNear);
+        }
+
+        $aSearchResults = $this->oPlaceLookup->lookup($aResults);
+
+        $aClassType = getClassTypesWithImportance();
+        $aRecheckWords = preg_split('/\b[\s,\\-]*/u', $sQuery);
+        foreach ($aRecheckWords as $i => $sWord) {
+            if (!preg_match('/[\pL\pN]/', $sWord)) unset($aRecheckWords[$i]);
+        }
+
+        if (CONST_Debug) {
+            echo '<i>Recheck words:<\i>';
+            var_dump($aRecheckWords);
+        }
+
+        foreach ($aSearchResults as $iIdx => $aResult) {
+            // Default
+            $fDiameter = getResultDiameter($aResult);
+
+            $aOutlineResult = $this->oPlaceLookup->getOutlines($aResult['place_id'], $aResult['lon'], $aResult['lat'], $fDiameter/2);
+            if ($aOutlineResult) {
+                $aResult = array_merge($aResult, $aOutlineResult);
+            }
+
+            if ($aResult['extra_place'] == 'city') {
+                $aResult['class'] = 'place';
+                $aResult['type'] = 'city';
+                $aResult['rank_search'] = 16;
+            }
+
+            // Is there an icon set for this type of result?
+            if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['icon'])
+                && $aClassType[$aResult['class'].':'.$aResult['type']]['icon']
+            ) {
+                $aResult['icon'] = CONST_Website_BaseURL.'images/mapicons/'.$aClassType[$aResult['class'].':'.$aResult['type']]['icon'].'.p.20.png';
+            }
+
+            if (isset($aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'])
+                && $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label']
+            ) {
+                $aResult['label'] = $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'];
+            } elseif (isset($aClassType[$aResult['class'].':'.$aResult['type']]['label'])
+                && $aClassType[$aResult['class'].':'.$aResult['type']]['label']
+            ) {
+                $aResult['label'] = $aClassType[$aResult['class'].':'.$aResult['type']]['label'];
+            }
+            // if tag '&addressdetails=1' is set in query
+            if ($this->bIncludeAddressDetails) {
+                // getAddressDetails() is defined in lib.php and uses the SQL function get_addressdata in functions.sql
+                $aResult['address'] = getAddressDetails($this->oDB, $sLanguagePrefArraySQL, $aResult['place_id'], $aResult['country_code'], $aResults[$aResult['place_id']]->iHouseNumber);
+                if ($aResult['extra_place'] == 'city' && !isset($aResult['address']['city'])) {
+                    $aResult['address'] = array_merge(array('city' => array_values($aResult['address'])[0]), $aResult['address']);
+                }
+            }
+
+            $aResult['name'] = $aResult['langaddress'];
+
+            if ($oCtx->hasNearPoint()) {
+                $aResult['importance'] = 0.001;
+                $aResult['foundorder'] = $aResult['addressimportance'];
+            } else {
+                // Adjust importance for the number of exact string matches in the result
+                $aResult['importance'] *= $this->viewboxImportanceFactor(
+                    $aResult['lon'],
+                    $aResult['lat']
+                );
+                $aResult['importance'] = max(0.001, $aResult['importance']);
+                $iCountWords = 0;
+                $sAddress = $aResult['langaddress'];
+                foreach ($aRecheckWords as $i => $sWord) {
+                    if (stripos($sAddress, $sWord)!==false) {
+                        $iCountWords++;
+                        if (preg_match('/(^|,)\s*'.preg_quote($sWord, '/').'\s*(,|$)/', $sAddress)) $iCountWords += 0.1;
+                    }
+                }
+
+                $aResult['importance'] = $aResult['importance'] + ($iCountWords*0.1); // 0.1 is a completely arbitrary number but something in the range 0.1 to 0.5 would seem right
+
+                // secondary ordering (for results with same importance (the smaller the better):
+                // - approximate importance of address parts
+                $aResult['foundorder'] = -$aResult['addressimportance']/10;
+                // - number of exact matches from the query
+                $aResult['foundorder'] -= $aResults[$aResult['place_id']]->iExactMatches;
+                // - importance of the class/type
+                if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['importance'])
+                    && $aClassType[$aResult['class'].':'.$aResult['type']]['importance']
+                ) {
+                    $aResult['foundorder'] += 0.0001 * $aClassType[$aResult['class'].':'.$aResult['type']]['importance'];
+                } else {
+                    $aResult['foundorder'] += 0.01;
+                }
+            }
+            if (CONST_Debug) var_dump($aResult);
+            $aSearchResults[$iIdx] = $aResult;
+        }
+        uasort($aSearchResults, 'byImportance');
+
+        $aOSMIDDone = array();
+        $aClassTypeNameDone = array();
+        $aToFilter = $aSearchResults;
+        $aSearchResults = array();
+
+        if (CONST_Debug) var_dump($aToFilter);
+
+        $bFirst = true;
+        foreach ($aToFilter as $aResult) {
+            $this->aExcludePlaceIDs[$aResult['place_id']] = $aResult['place_id'];
+            if ($bFirst) {
+                $fLat = $aResult['lat'];
+                $fLon = $aResult['lon'];
+                if (isset($aResult['zoom'])) $iZoom = $aResult['zoom'];
+                $bFirst = false;
+            }
+            if (!$this->oPlaceLookup->doDeDupe() || (!isset($aOSMIDDone[$aResult['osm_type'].$aResult['osm_id']])
+                && !isset($aClassTypeNameDone[$aResult['osm_type'].$aResult['class'].$aResult['type'].$aResult['name'].$aResult['admin_level']]))
+            ) {
+                $aOSMIDDone[$aResult['osm_type'].$aResult['osm_id']] = true;
+                $aClassTypeNameDone[$aResult['osm_type'].$aResult['class'].$aResult['type'].$aResult['name'].$aResult['admin_level']] = true;
+                $aSearchResults[] = $aResult;
+            }
+
+            // Absolute limit on number of results
+            if (sizeof($aSearchResults) >= $this->iFinalLimit) break;
+        }
+
+        if (CONST_Debug) var_dump($aSearchResults);
+        return $aSearchResults;
+    } // end lookup()
+} // end class