lib/Geocode.php

   1 <?php
   2
   3 namespace Nominatim;
   4
   5 require_once(CONST_BasePath.'/lib/NearPoint.php');
   6 require_once(CONST_BasePath.'/lib/PlaceLookup.php');
   7 require_once(CONST_BasePath.'/lib/ReverseGeocode.php');
   8
   9 class Geocode
  10 {
  11     protected $oDB;
  12
  13     protected $aLangPrefOrder = array();
  14
  15     protected $bIncludeAddressDetails = false;
  16     protected $bIncludeExtraTags = false;
  17     protected $bIncludeNameDetails = false;
  18
  19     protected $bIncludePolygonAsPoints = false;
  20     protected $bIncludePolygonAsText = false;
  21     protected $bIncludePolygonAsGeoJSON = false;
  22     protected $bIncludePolygonAsKML = false;
  23     protected $bIncludePolygonAsSVG = false;
  24     protected $fPolygonSimplificationThreshold = 0.0;
  25
  26     protected $aExcludePlaceIDs = array();
  27     protected $bDeDupe = true;
  28     protected $bReverseInPlan = false;
  29
  30     protected $iLimit = 20;
  31     protected $iFinalLimit = 10;
  32     protected $iOffset = 0;
  33     protected $bFallback = false;
  34
  35     protected $aCountryCodes = false;
  36
  37     protected $bBoundedSearch = false;
  38     protected $aViewBox = false;
  39     protected $sViewboxCentreSQL = false;
  40     protected $sViewboxSmallSQL = false;
  41     protected $sViewboxLargeSQL = false;
  42
  43     protected $iMaxRank = 20;
  44     protected $iMinAddressRank = 0;
  45     protected $iMaxAddressRank = 30;
  46     protected $aAddressRankList = array();
  47     protected $exactMatchCache = array();
  48
  49     protected $sAllowedTypesSQLList = false;
  50
  51     protected $sQuery = false;
  52     protected $aStructuredQuery = false;
  53
  54
  55     public function __construct(&$oDB)
  56     {
  57         $this->oDB =& $oDB;
  58     }
  59
  60     public function setReverseInPlan($bReverse)
  61     {
  62         $this->bReverseInPlan = $bReverse;
  63     }
  64
  65     public function setLanguagePreference($aLangPref)
  66     {
  67         $this->aLangPrefOrder = $aLangPref;
  68     }
  69
  70     public function getIncludeAddressDetails()
  71     {
  72         return $this->bIncludeAddressDetails;
  73     }
  74
  75     public function getIncludeExtraTags()
  76     {
  77         return $this->bIncludeExtraTags;
  78     }
  79
  80     public function getIncludeNameDetails()
  81     {
  82         return $this->bIncludeNameDetails;
  83     }
  84
  85     public function setIncludePolygonAsPoints($b = true)
  86     {
  87         $this->bIncludePolygonAsPoints = $b;
  88     }
  89
  90     public function setIncludePolygonAsText($b = true)
  91     {
  92         $this->bIncludePolygonAsText = $b;
  93     }
  94
  95     public function setIncludePolygonAsGeoJSON($b = true)
  96     {
  97         $this->bIncludePolygonAsGeoJSON = $b;
  98     }
  99
 100     public function setIncludePolygonAsKML($b = true)
 101     {
 102         $this->bIncludePolygonAsKML = $b;
 103     }
 104
 105     public function setIncludePolygonAsSVG($b = true)
 106     {
 107         $this->bIncludePolygonAsSVG = $b;
 108     }
 109
 110     public function setPolygonSimplificationThreshold($f)
 111     {
 112         $this->fPolygonSimplificationThreshold = $f;
 113     }
 114
 115     public function setLimit($iLimit = 10)
 116     {
 117         if ($iLimit > 50) $iLimit = 50;
 118         if ($iLimit < 1) $iLimit = 1;
 119
 120         $this->iFinalLimit = $iLimit;
 121         $this->iLimit = $iLimit + min($iLimit, 10);
 122     }
 123
 124     public function getExcludedPlaceIDs()
 125     {
 126         return $this->aExcludePlaceIDs;
 127     }
 128
 129
 130     public function getCountryCodes()
 131     {
 132         return $this->aCountryCodes;
 133     }
 134
 135     public function getViewBoxString()
 136     {
 137         if (!$this->aViewBox) return null;
 138         return $this->aViewBox[0].','.$this->aViewBox[3].','.$this->aViewBox[2].','.$this->aViewBox[1];
 139     }
 140
 141     public function setFeatureType($sFeatureType)
 142     {
 143         switch ($sFeatureType) {
 144             case 'country':
 145                 $this->setRankRange(4, 4);
 146                 break;
 147             case 'state':
 148                 $this->setRankRange(8, 8);
 149                 break;
 150             case 'city':
 151                 $this->setRankRange(14, 16);
 152                 break;
 153             case 'settlement':
 154                 $this->setRankRange(8, 20);
 155                 break;
 156         }
 157     }
 158
 159     public function setRankRange($iMin, $iMax)
 160     {
 161         $this->iMinAddressRank = $iMin;
 162         $this->iMaxAddressRank = $iMax;
 163     }
 164
 165     public function setRoute($aRoutePoints, $fRouteWidth)
 166     {
 167         $this->aViewBox = false;
 168
 169         $this->sViewboxCentreSQL = "ST_SetSRID('LINESTRING(";
 170         $sSep = '';
 171         foreach ($aRoutePoints as $aPoint) {
 172             $fPoint = (float)$aPoint;
 173             $this->sViewboxCentreSQL .= $sSep.$fPoint;
 174             $sSep = ($sSep == ' ') ? ',' : ' ';
 175         }
 176         $this->sViewboxCentreSQL .= ")'::geometry,4326)";
 177
 178         $this->sViewboxSmallSQL = 'ST_BUFFER('.$this->sViewboxCentreSQL;
 179         $this->sViewboxSmallSQL .= ','.($fRouteWidth/69).')';
 180
 181         $this->sViewboxLargeSQL = 'ST_BUFFER('.$this->sViewboxCentreSQL;
 182         $this->sViewboxLargeSQL .= ','.($fRouteWidth/30).')';
 183     }
 184
 185     public function setViewbox($aViewbox)
 186     {
 187         $this->aViewBox = array_map('floatval', $aViewbox);
 188
 189         $this->aViewBox[0] = max(-180.0, min(180, $this->aViewBox[0]));
 190         $this->aViewBox[1] = max(-90.0, min(90, $this->aViewBox[1]));
 191         $this->aViewBox[2] = max(-180.0, min(180, $this->aViewBox[2]));
 192         $this->aViewBox[3] = max(-90.0, min(90, $this->aViewBox[3]));
 193
 194         if (abs($this->aViewBox[0] - $this->aViewBox[2]) < 0.000000001
 195             || abs($this->aViewBox[1] - $this->aViewBox[3]) < 0.000000001
 196         ) {
 197             userError("Bad parameter 'viewbox'. Not a box.");
 198         }
 199
 200         $fHeight = $this->aViewBox[0] - $this->aViewBox[2];
 201         $fWidth = $this->aViewBox[1] - $this->aViewBox[3];
 202         $aBigViewBox[0] = $this->aViewBox[0] + $fHeight;
 203         $aBigViewBox[2] = $this->aViewBox[2] - $fHeight;
 204         $aBigViewBox[1] = $this->aViewBox[1] + $fWidth;
 205         $aBigViewBox[3] = $this->aViewBox[3] - $fWidth;
 206
 207         $this->sViewboxCentreSQL = false;
 208         $this->sViewboxSmallSQL = sprintf(
 209             'ST_SetSRID(ST_MakeBox2D(ST_Point(%F,%F),ST_Point(%F,%F)),4326)',
 210             $this->aViewBox[0],
 211             $this->aViewBox[1],
 212             $this->aViewBox[2],
 213             $this->aViewBox[3]
 214         );
 215         $this->sViewboxLargeSQL = sprintf(
 216             'ST_SetSRID(ST_MakeBox2D(ST_Point(%F,%F),ST_Point(%F,%F)),4326)',
 217             $aBigViewBox[0],
 218             $aBigViewBox[1],
 219             $aBigViewBox[2],
 220             $aBigViewBox[3]
 221         );
 222     }
 223
 224     public function setQuery($sQueryString)
 225     {
 226         $this->sQuery = $sQueryString;
 227         $this->aStructuredQuery = false;
 228     }
 229
 230     public function getQueryString()
 231     {
 232         return $this->sQuery;
 233     }
 234
 235
 236     public function loadParamArray($oParams)
 237     {
 238         $this->bIncludeAddressDetails
 239          = $oParams->getBool('addressdetails', $this->bIncludeAddressDetails);
 240         $this->bIncludeExtraTags
 241          = $oParams->getBool('extratags', $this->bIncludeExtraTags);
 242         $this->bIncludeNameDetails
 243          = $oParams->getBool('namedetails', $this->bIncludeNameDetails);
 244
 245         $this->bBoundedSearch = $oParams->getBool('bounded', $this->bBoundedSearch);
 246         $this->bDeDupe = $oParams->getBool('dedupe', $this->bDeDupe);
 247
 248         $this->setLimit($oParams->getInt('limit', $this->iFinalLimit));
 249         $this->iOffset = $oParams->getInt('offset', $this->iOffset);
 250
 251         $this->bFallback = $oParams->getBool('fallback', $this->bFallback);
 252
 253         // List of excluded Place IDs - used for more acurate pageing
 254         $sExcluded = $oParams->getStringList('exclude_place_ids');
 255         if ($sExcluded) {
 256             foreach ($sExcluded as $iExcludedPlaceID) {
 257                 $iExcludedPlaceID = (int)$iExcludedPlaceID;
 258                 if ($iExcludedPlaceID)
 259                     $aExcludePlaceIDs[$iExcludedPlaceID] = $iExcludedPlaceID;
 260             }
 261
 262             if (isset($aExcludePlaceIDs))
 263                 $this->aExcludePlaceIDs = $aExcludePlaceIDs;
 264         }
 265
 266         // Only certain ranks of feature
 267         $sFeatureType = $oParams->getString('featureType');
 268         if (!$sFeatureType) $sFeatureType = $oParams->getString('featuretype');
 269         if ($sFeatureType) $this->setFeatureType($sFeatureType);
 270
 271         // Country code list
 272         $sCountries = $oParams->getStringList('countrycodes');
 273         if ($sCountries) {
 274             foreach ($sCountries as $sCountryCode) {
 275                 if (preg_match('/^[a-zA-Z][a-zA-Z]$/', $sCountryCode)) {
 276                     $aCountries[] = strtolower($sCountryCode);
 277                 }
 278             }
 279             if (isset($aCountries))
 280                 $this->aCountryCodes = $aCountries;
 281         }
 282
 283         $aViewbox = $oParams->getStringList('viewboxlbrt');
 284         if ($aViewbox) {
 285             if (count($aViewbox) != 4) {
 286                 userError("Bad parmater 'viewbox'. Expected 4 coordinates.");
 287             }
 288             $this->setViewbox($aViewbox);
 289         } else {
 290             $aViewbox = $oParams->getStringList('viewbox');
 291             if ($aViewbox) {
 292                 if (count($aViewbox) != 4) {
 293                     userError("Bad parmater 'viewbox'. Expected 4 coordinates.");
 294                 }
 295                 $this->setViewBox(array(
 296                                    $aViewbox[0],
 297                                    $aViewbox[3],
 298                                    $aViewbox[2],
 299                                    $aViewbox[1]
 300                                   ));
 301             } else {
 302                 $aRoute = $oParams->getStringList('route');
 303                 $fRouteWidth = $oParams->getFloat('routewidth');
 304                 if ($aRoute && $fRouteWidth) {
 305                     $this->setRoute($aRoute, $fRouteWidth);
 306                 }
 307             }
 308         }
 309     }
 310
 311     public function setQueryFromParams($oParams)
 312     {
 313         // Search query
 314         $sQuery = $oParams->getString('q');
 315         if (!$sQuery) {
 316             $this->setStructuredQuery(
 317                 $oParams->getString('amenity'),
 318                 $oParams->getString('street'),
 319                 $oParams->getString('city'),
 320                 $oParams->getString('county'),
 321                 $oParams->getString('state'),
 322                 $oParams->getString('country'),
 323                 $oParams->getString('postalcode')
 324             );
 325             $this->setReverseInPlan(false);
 326         } else {
 327             $this->setQuery($sQuery);
 328         }
 329     }
 330
 331     public function loadStructuredAddressElement($sValue, $sKey, $iNewMinAddressRank, $iNewMaxAddressRank, $aItemListValues)
 332     {
 333         $sValue = trim($sValue);
 334         if (!$sValue) return false;
 335         $this->aStructuredQuery[$sKey] = $sValue;
 336         if ($this->iMinAddressRank == 0 && $this->iMaxAddressRank == 30) {
 337             $this->iMinAddressRank = $iNewMinAddressRank;
 338             $this->iMaxAddressRank = $iNewMaxAddressRank;
 339         }
 340         if ($aItemListValues) $this->aAddressRankList = array_merge($this->aAddressRankList, $aItemListValues);
 341         return true;
 342     }
 343
 344     public function setStructuredQuery($sAmentiy = false, $sStreet = false, $sCity = false, $sCounty = false, $sState = false, $sCountry = false, $sPostalCode = false)
 345     {
 346         $this->sQuery = false;
 347
 348         // Reset
 349         $this->iMinAddressRank = 0;
 350         $this->iMaxAddressRank = 30;
 351         $this->aAddressRankList = array();
 352
 353         $this->aStructuredQuery = array();
 354         $this->sAllowedTypesSQLList = '';
 355
 356         $this->loadStructuredAddressElement($sAmentiy, 'amenity', 26, 30, false);
 357         $this->loadStructuredAddressElement($sStreet, 'street', 26, 30, false);
 358         $this->loadStructuredAddressElement($sCity, 'city', 14, 24, false);
 359         $this->loadStructuredAddressElement($sCounty, 'county', 9, 13, false);
 360         $this->loadStructuredAddressElement($sState, 'state', 8, 8, false);
 361         $this->loadStructuredAddressElement($sPostalCode, 'postalcode', 5, 11, array(5, 11));
 362         $this->loadStructuredAddressElement($sCountry, 'country', 4, 4, false);
 363
 364         if (sizeof($this->aStructuredQuery) > 0) {
 365             $this->sQuery = join(', ', $this->aStructuredQuery);
 366             if ($this->iMaxAddressRank < 30) {
 367                 $sAllowedTypesSQLList = '(\'place\',\'boundary\')';
 368             }
 369         }
 370     }
 371
 372     public function fallbackStructuredQuery()
 373     {
 374         if (!$this->aStructuredQuery) return false;
 375
 376         $aParams = $this->aStructuredQuery;
 377
 378         if (sizeof($aParams) == 1) return false;
 379
 380         $aOrderToFallback = array('postalcode', 'street', 'city', 'county', 'state');
 381
 382         foreach ($aOrderToFallback as $sType) {
 383             if (isset($aParams[$sType])) {
 384                 unset($aParams[$sType]);
 385                 $this->setStructuredQuery(@$aParams['amenity'], @$aParams['street'], @$aParams['city'], @$aParams['county'], @$aParams['state'], @$aParams['country'], @$aParams['postalcode']);
 386                 return true;
 387             }
 388         }
 389
 390         return false;
 391     }
 392
 393     public function getDetails($aPlaceIDs)
 394     {
 395         //$aPlaceIDs is an array with key: placeID and value: tiger-housenumber, if found, else -1
 396         if (sizeof($aPlaceIDs) == 0) return array();
 397
 398         $sLanguagePrefArraySQL = "ARRAY[".join(',', array_map("getDBQuoted", $this->aLangPrefOrder))."]";
 399
 400         // Get the details for display (is this a redundant extra step?)
 401         $sPlaceIDs = join(',', array_keys($aPlaceIDs));
 402
 403         $sImportanceSQL = '';
 404         if ($this->sViewboxSmallSQL) $sImportanceSQL .= " CASE WHEN ST_Contains($this->sViewboxSmallSQL, ST_Collect(centroid)) THEN 1 ELSE 0.75 END * ";
 405         if ($this->sViewboxLargeSQL) $sImportanceSQL .= " CASE WHEN ST_Contains($this->sViewboxLargeSQL, ST_Collect(centroid)) THEN 1 ELSE 0.75 END * ";
 406
 407         $sSQL  = "SELECT ";
 408         $sSQL .= "    osm_type,";
 409         $sSQL .= "    osm_id,";
 410         $sSQL .= "    class,";
 411         $sSQL .= "    type,";
 412         $sSQL .= "    admin_level,";
 413         $sSQL .= "    rank_search,";
 414         $sSQL .= "    rank_address,";
 415         $sSQL .= "    min(place_id) AS place_id, ";
 416         $sSQL .= "    min(parent_place_id) AS parent_place_id, ";
 417         $sSQL .= "    calculated_country_code AS country_code, ";
 418         $sSQL .= "    get_address_by_language(place_id, -1, $sLanguagePrefArraySQL) AS langaddress,";
 419         $sSQL .= "    get_name_by_language(name, $sLanguagePrefArraySQL) AS placename,";
 420         $sSQL .= "    get_name_by_language(name, ARRAY['ref']) AS ref,";
 421         if ($this->bIncludeExtraTags) $sSQL .= "hstore_to_json(extratags)::text AS extra,";
 422         if ($this->bIncludeNameDetails) $sSQL .= "hstore_to_json(name)::text AS names,";
 423         $sSQL .= "    avg(ST_X(centroid)) AS lon, ";
 424         $sSQL .= "    avg(ST_Y(centroid)) AS lat, ";
 425         $sSQL .= "    ".$sImportanceSQL."COALESCE(importance,0.75-(rank_search::float/40)) AS importance, ";
 426         $sSQL .= "    ( ";
 427         $sSQL .= "       SELECT max(p.importance*(p.rank_address+2))";
 428         $sSQL .= "       FROM ";
 429         $sSQL .= "         place_addressline s, ";
 430         $sSQL .= "         placex p";
 431         $sSQL .= "       WHERE s.place_id = min(CASE WHEN placex.rank_search < 28 THEN placex.place_id ELSE placex.parent_place_id END)";
 432         $sSQL .= "         AND p.place_id = s.address_place_id ";
 433         $sSQL .= "         AND s.isaddress ";
 434         $sSQL .= "         AND p.importance is not null ";
 435         $sSQL .= "    ) AS addressimportance, ";
 436         $sSQL .= "    (extratags->'place') AS extra_place ";
 437         $sSQL .= " FROM placex";
 438         $sSQL .= " WHERE place_id in ($sPlaceIDs) ";
 439         $sSQL .= "   AND (";
 440         $sSQL .= "            placex.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
 441         if (14 >= $this->iMinAddressRank && 14 <= $this->iMaxAddressRank) {
 442             $sSQL .= "        OR (extratags->'place') = 'city'";
 443         }
 444         if ($this->aAddressRankList) {
 445             $sSQL .= "        OR placex.rank_address in (".join(',', $this->aAddressRankList).")";
 446         }
 447         $sSQL .= "       ) ";
 448         if ($this->sAllowedTypesSQLList) {
 449             $sSQL .= "AND placex.class in $this->sAllowedTypesSQLList ";
 450         }
 451         $sSQL .= "    AND linked_place_id is null ";
 452         $sSQL .= " GROUP BY ";
 453         $sSQL .= "     osm_type, ";
 454         $sSQL .= "     osm_id, ";
 455         $sSQL .= "     class, ";
 456         $sSQL .= "     type, ";
 457         $sSQL .= "     admin_level, ";
 458         $sSQL .= "     rank_search, ";
 459         $sSQL .= "     rank_address, ";
 460         $sSQL .= "     calculated_country_code, ";
 461         $sSQL .= "     importance, ";
 462         if (!$this->bDeDupe) $sSQL .= "place_id,";
 463         $sSQL .= "     langaddress, ";
 464         $sSQL .= "     placename, ";
 465         $sSQL .= "     ref, ";
 466         if ($this->bIncludeExtraTags) $sSQL .= "extratags, ";
 467         if ($this->bIncludeNameDetails) $sSQL .= "name, ";
 468         $sSQL .= "     extratags->'place' ";
 469
 470         if (30 >= $this->iMinAddressRank && 30 <= $this->iMaxAddressRank) {
 471             // only Tiger housenumbers and interpolation lines need to be interpolated, because they are saved as lines
 472             // with start- and endnumber, the common osm housenumbers are usually saved as points
 473             $sHousenumbers = "";
 474             $i = 0;
 475             $length = count($aPlaceIDs);
 476             foreach ($aPlaceIDs as $placeID => $housenumber) {
 477                 $i++;
 478                 $sHousenumbers .= "(".$placeID.", ".$housenumber.")";
 479                 if ($i<$length) $sHousenumbers .= ", ";
 480             }
 481
 482             if (CONST_Use_US_Tiger_Data) {
 483                 // Tiger search only if a housenumber was searched and if it was found (i.e. aPlaceIDs[placeID] = housenumber != -1) (realized through a join)
 484                 $sSQL .= " union";
 485                 $sSQL .= " SELECT ";
 486                 $sSQL .= "     'T' AS osm_type, ";
 487                 $sSQL .= "     (SELECT osm_id from placex p WHERE p.place_id=min(blub.parent_place_id)) as osm_id, ";
 488                 $sSQL .= "     'place' AS class, ";
 489                 $sSQL .= "     'house' AS type, ";
 490                 $sSQL .= "     null AS admin_level, ";
 491                 $sSQL .= "     30 AS rank_search, ";
 492                 $sSQL .= "     30 AS rank_address, ";
 493                 $sSQL .= "     min(place_id) AS place_id, ";
 494                 $sSQL .= "     min(parent_place_id) AS parent_place_id, ";
 495                 $sSQL .= "     'us' AS country_code, ";
 496                 $sSQL .= "     get_address_by_language(place_id, housenumber_for_place, $sLanguagePrefArraySQL) AS langaddress,";
 497                 $sSQL .= "     null AS placename, ";
 498                 $sSQL .= "     null AS ref, ";
 499                 if ($this->bIncludeExtraTags) $sSQL .= "null AS extra,";
 500                 if ($this->bIncludeNameDetails) $sSQL .= "null AS names,";
 501                 $sSQL .= "     avg(st_x(centroid)) AS lon, ";
 502                 $sSQL .= "     avg(st_y(centroid)) AS lat,";
 503                 $sSQL .= "     ".$sImportanceSQL."-1.15 AS importance, ";
 504                 $sSQL .= "     (";
 505                 $sSQL .= "        SELECT max(p.importance*(p.rank_address+2))";
 506                 $sSQL .= "        FROM ";
 507                 $sSQL .= "          place_addressline s, ";
 508                 $sSQL .= "          placex p";
 509                 $sSQL .= "        WHERE s.place_id = min(blub.parent_place_id)";
 510                 $sSQL .= "          AND p.place_id = s.address_place_id ";
 511                 $sSQL .= "          AND s.isaddress";
 512                 $sSQL .= "          AND p.importance is not null";
 513                 $sSQL .= "     ) AS addressimportance, ";
 514                 $sSQL .= "     null AS extra_place ";
 515                 $sSQL .= " FROM (";
 516                 $sSQL .= "     SELECT place_id, ";    // interpolate the Tiger housenumbers here
 517                 $sSQL .= "         ST_LineInterpolatePoint(linegeo, (housenumber_for_place-startnumber::float)/(endnumber-startnumber)::float) AS centroid, ";
 518                 $sSQL .= "         parent_place_id, ";
 519                 $sSQL .= "         housenumber_for_place";
 520                 $sSQL .= "     FROM (";
 521                 $sSQL .= "            location_property_tiger ";
 522                 $sSQL .= "            JOIN (values ".$sHousenumbers.") AS housenumbers(place_id, housenumber_for_place) USING(place_id)) ";
 523                 $sSQL .= "     WHERE ";
 524                 $sSQL .= "         housenumber_for_place>=0";
 525                 $sSQL .= "         AND 30 between $this->iMinAddressRank AND $this->iMaxAddressRank";
 526                 $sSQL .= " ) AS blub"; //postgres wants an alias here
 527                 $sSQL .= " GROUP BY";
 528                 $sSQL .= "      place_id, ";
 529                 $sSQL .= "      housenumber_for_place"; //is this group by really needed?, place_id + housenumber (in combination) are unique
 530                 if (!$this->bDeDupe) $sSQL .= ", place_id ";
 531             }
 532             // osmline
 533             // interpolation line search only if a housenumber was searched and if it was found (i.e. aPlaceIDs[placeID] = housenumber != -1) (realized through a join)
 534             $sSQL .= " UNION ";
 535             $sSQL .= "SELECT ";
 536             $sSQL .= "  'W' AS osm_type, ";
 537             $sSQL .= "  osm_id, ";
 538             $sSQL .= "  'place' AS class, ";
 539             $sSQL .= "  'house' AS type, ";
 540             $sSQL .= "  null AS admin_level, ";
 541             $sSQL .= "  30 AS rank_search, ";
 542             $sSQL .= "  30 AS rank_address, ";
 543             $sSQL .= "  min(place_id) as place_id, ";
 544             $sSQL .= "  min(parent_place_id) AS parent_place_id, ";
 545             $sSQL .= "  calculated_country_code AS country_code, ";
 546             $sSQL .= "  get_address_by_language(place_id, housenumber_for_place, $sLanguagePrefArraySQL) AS langaddress, ";
 547             $sSQL .= "  null AS placename, ";
 548             $sSQL .= "  null AS ref, ";
 549             if ($this->bIncludeExtraTags) $sSQL .= "null AS extra, ";
 550             if ($this->bIncludeNameDetails) $sSQL .= "null AS names, ";
 551             $sSQL .= "  AVG(st_x(centroid)) AS lon, ";
 552             $sSQL .= "  AVG(st_y(centroid)) AS lat, ";
 553             $sSQL .= "  ".$sImportanceSQL."-0.1 AS importance, ";  // slightly smaller than the importance for normal houses with rank 30, which is 0
 554             $sSQL .= "  (";
 555             $sSQL .= "     SELECT ";
 556             $sSQL .= "       MAX(p.importance*(p.rank_address+2)) ";
 557             $sSQL .= "     FROM";
 558             $sSQL .= "       place_addressline s, ";
 559             $sSQL .= "       placex p";
 560             $sSQL .= "     WHERE s.place_id = min(blub.parent_place_id) ";
 561             $sSQL .= "       AND p.place_id = s.address_place_id ";
 562             $sSQL .= "       AND s.isaddress ";
 563             $sSQL .= "       AND p.importance is not null";
 564             $sSQL .= "  ) AS addressimportance,";
 565             $sSQL .= "  null AS extra_place ";
 566             $sSQL .= "  FROM (";
 567             $sSQL .= "     SELECT ";
 568             $sSQL .= "         osm_id, ";
 569             $sSQL .= "         place_id, ";
 570             $sSQL .= "         calculated_country_code, ";
 571             $sSQL .= "         CASE ";             // interpolate the housenumbers here
 572             $sSQL .= "           WHEN startnumber != endnumber ";
 573             $sSQL .= "           THEN ST_LineInterpolatePoint(linegeo, (housenumber_for_place-startnumber::float)/(endnumber-startnumber)::float) ";
 574             $sSQL .= "           ELSE ST_LineInterpolatePoint(linegeo, 0.5) ";
 575             $sSQL .= "         END as centroid, ";
 576             $sSQL .= "         parent_place_id, ";
 577             $sSQL .= "         housenumber_for_place ";
 578             $sSQL .= "     FROM (";
 579             $sSQL .= "            location_property_osmline ";
 580             $sSQL .= "            JOIN (values ".$sHousenumbers.") AS housenumbers(place_id, housenumber_for_place) USING(place_id)";
 581             $sSQL .= "          ) ";
 582             $sSQL .= "     WHERE housenumber_for_place>=0 ";
 583             $sSQL .= "       AND 30 between $this->iMinAddressRank AND $this->iMaxAddressRank";
 584             $sSQL .= "  ) as blub"; //postgres wants an alias here
 585             $sSQL .= "  GROUP BY ";
 586             $sSQL .= "    osm_id, ";
 587             $sSQL .= "    place_id, ";
 588             $sSQL .= "    housenumber_for_place, ";
 589             $sSQL .= "    calculated_country_code "; //is this group by really needed?, place_id + housenumber (in combination) are unique
 590             if (!$this->bDeDupe) $sSQL .= ", place_id ";
 591
 592             if (CONST_Use_Aux_Location_data) {
 593                 $sSQL .= " UNION ";
 594                 $sSQL .= "  SELECT ";
 595                 $sSQL .= "     'L' AS osm_type, ";
 596                 $sSQL .= "     place_id AS osm_id, ";
 597                 $sSQL .= "     'place' AS class,";
 598                 $sSQL .= "     'house' AS type, ";
 599                 $sSQL .= "     null AS admin_level, ";
 600                 $sSQL .= "     0 AS rank_search,";
 601                 $sSQL .= "     0 AS rank_address, ";
 602                 $sSQL .= "     min(place_id) AS place_id,";
 603                 $sSQL .= "     min(parent_place_id) AS parent_place_id, ";
 604                 $sSQL .= "     'us' AS country_code, ";
 605                 $sSQL .= "     get_address_by_language(place_id, -1, $sLanguagePrefArraySQL) AS langaddress, ";
 606                 $sSQL .= "     null AS placename, ";
 607                 $sSQL .= "     null AS ref, ";
 608                 if ($this->bIncludeExtraTags) $sSQL .= "null AS extra, ";
 609                 if ($this->bIncludeNameDetails) $sSQL .= "null AS names, ";
 610                 $sSQL .= "     avg(ST_X(centroid)) AS lon, ";
 611                 $sSQL .= "     avg(ST_Y(centroid)) AS lat, ";
 612                 $sSQL .= "     ".$sImportanceSQL."-1.10 AS importance, ";
 613                 $sSQL .= "     ( ";
 614                 $sSQL .= "       SELECT max(p.importance*(p.rank_address+2))";
 615                 $sSQL .= "       FROM ";
 616                 $sSQL .= "          place_addressline s, ";
 617                 $sSQL .= "          placex p";
 618                 $sSQL .= "       WHERE s.place_id = min(location_property_aux.parent_place_id)";
 619                 $sSQL .= "         AND p.place_id = s.address_place_id ";
 620                 $sSQL .= "         AND s.isaddress";
 621                 $sSQL .= "         AND p.importance is not null";
 622                 $sSQL .= "     ) AS addressimportance, ";
 623                 $sSQL .= "     null AS extra_place ";
 624                 $sSQL .= "  FROM location_property_aux ";
 625                 $sSQL .= "  WHERE place_id in ($sPlaceIDs) ";
 626                 $sSQL .= "    AND 30 between $this->iMinAddressRank and $this->iMaxAddressRank ";
 627                 $sSQL .= "  GROUP BY ";
 628                 $sSQL .= "     place_id, ";
 629                 if (!$this->bDeDupe) $sSQL .= "place_id, ";
 630                 $sSQL .= "     get_address_by_language(place_id, -1, $sLanguagePrefArraySQL) ";
 631             }
 632         }
 633
 634         $sSQL .= " order by importance desc";
 635         if (CONST_Debug) {
 636             echo "<hr>";
 637             var_dump($sSQL);
 638         }
 639         $aSearchResults = chksql(
 640             $this->oDB->getAll($sSQL),
 641             "Could not get details for place."
 642         );
 643
 644         return $aSearchResults;
 645     }
 646
 647     public function getGroupedSearches($aSearches, $aPhraseTypes, $aPhrases, $aValidTokens, $aWordFrequencyScores, $bStructuredPhrases)
 648     {
 649         /*
 650              Calculate all searches using aValidTokens i.e.
 651              'Wodsworth Road, Sheffield' =>
 652
 653              Phrase Wordset
 654              0      0       (wodsworth road)
 655              0      1       (wodsworth)(road)
 656              1      0       (sheffield)
 657
 658              Score how good the search is so they can be ordered
 659          */
 660         foreach ($aPhrases as $iPhrase => $sPhrase) {
 661             $aNewPhraseSearches = array();
 662             if ($bStructuredPhrases) $sPhraseType = $aPhraseTypes[$iPhrase];
 663             else $sPhraseType = '';
 664
 665             foreach ($aPhrases[$iPhrase]['wordsets'] as $iWordSet => $aWordset) {
 666                 // Too many permutations - too expensive
 667                 if ($iWordSet > 120) break;
 668
 669                 $aWordsetSearches = $aSearches;
 670
 671                 // Add all words from this wordset
 672                 foreach ($aWordset as $iToken => $sToken) {
 673                     //echo "<br><b>$sToken</b>";
 674                     $aNewWordsetSearches = array();
 675
 676                     foreach ($aWordsetSearches as $aCurrentSearch) {
 677                         //echo "<i>";
 678                         //var_dump($aCurrentSearch);
 679                         //echo "</i>";
 680
 681                         // If the token is valid
 682                         if (isset($aValidTokens[' '.$sToken])) {
 683                             foreach ($aValidTokens[' '.$sToken] as $aSearchTerm) {
 684                                 $aSearch = $aCurrentSearch;
 685                                 $aSearch['iSearchRank']++;
 686                                 if (($sPhraseType == '' || $sPhraseType == 'country') && !empty($aSearchTerm['country_code']) && $aSearchTerm['country_code'] != '0') {
 687                                     if ($aSearch['sCountryCode'] === false) {
 688                                         $aSearch['sCountryCode'] = strtolower($aSearchTerm['country_code']);
 689                                         // Country is almost always at the end of the string - increase score for finding it anywhere else (optimisation)
 690                                         if (($iToken+1 != sizeof($aWordset) || $iPhrase+1 != sizeof($aPhrases))) {
 691                                             $aSearch['iSearchRank'] += 5;
 692                                         }
 693                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 694                                     }
 695                                 } elseif (isset($aSearchTerm['lat']) && $aSearchTerm['lat'] !== '' && $aSearchTerm['lat'] !== null) {
 696                                     if ($aSearch['oNear'] === false) {
 697                                         $aSearch['oNear'] = new NearPoint(
 698                                             $aSearchTerm['lat'],
 699                                             $aSearchTerm['lon'],
 700                                             $aSearchTerm['radius']
 701                                         );
 702                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 703                                     }
 704                                 } elseif ($sPhraseType == 'postalcode') {
 705                                     // 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
 706                                     if (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id']) {
 707                                         // If we already have a name try putting the postcode first
 708                                         if (sizeof($aSearch['aName'])) {
 709                                             $aNewSearch = $aSearch;
 710                                             $aNewSearch['aAddress'] = array_merge($aNewSearch['aAddress'], $aNewSearch['aName']);
 711                                             $aNewSearch['aName'] = array();
 712                                             $aNewSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 713                                             if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aNewSearch;
 714                                         }
 715
 716                                         if (sizeof($aSearch['aName'])) {
 717                                             if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strpos($sToken, ' ') !== false)) {
 718                                                 $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 719                                             } else {
 720                                                 $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 721                                                 $aSearch['iSearchRank'] += 1000; // skip;
 722                                             }
 723                                         } else {
 724                                             $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 725                                             //$aSearch['iNamePhrase'] = $iPhrase;
 726                                         }
 727                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 728                                     }
 729                                 } elseif (($sPhraseType == '' || $sPhraseType == 'street') && $aSearchTerm['class'] == 'place' && $aSearchTerm['type'] == 'house') {
 730                                     if ($aSearch['sHouseNumber'] === '') {
 731                                         $aSearch['sHouseNumber'] = $sToken;
 732                                         // sanity check: if the housenumber is not mainly made
 733                                         // up of numbers, add a penalty
 734                                         if (preg_match_all("/[^0-9]/", $sToken, $aMatches) > 2) $aSearch['iSearchRank']++;
 735                                         // also housenumbers should appear in the first or second phrase
 736                                         if ($iPhrase > 1) $aSearch['iSearchRank'] += 1;
 737                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 738                                         /*
 739                                         // Fall back to not searching for this item (better than nothing)
 740                                         $aSearch = $aCurrentSearch;
 741                                         $aSearch['iSearchRank'] += 1;
 742                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 743                                          */
 744                                     }
 745                                 } elseif ($sPhraseType == '' && $aSearchTerm['class'] !== '' && $aSearchTerm['class'] !== null) {
 746                                     if ($aSearch['sClass'] === '') {
 747                                         $aSearch['sOperator'] = $aSearchTerm['operator'];
 748                                         $aSearch['sClass'] = $aSearchTerm['class'];
 749                                         $aSearch['sType'] = $aSearchTerm['type'];
 750                                         if (sizeof($aSearch['aName'])) $aSearch['sOperator'] = 'name';
 751                                         else $aSearch['sOperator'] = 'near'; // near = in for the moment
 752                                         if (strlen($aSearchTerm['operator']) == 0) $aSearch['iSearchRank'] += 1;
 753
 754                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 755                                     }
 756                                 } elseif (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id']) {
 757                                     if (sizeof($aSearch['aName'])) {
 758                                         if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strpos($sToken, ' ') !== false)) {
 759                                             $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 760                                         } else {
 761                                             $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 762                                             $aSearch['iSearchRank'] += 1000; // skip;
 763                                         }
 764                                     } else {
 765                                         $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 766                                         //$aSearch['iNamePhrase'] = $iPhrase;
 767                                     }
 768                                     if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 769                                 }
 770                             }
 771                         }
 772                         // Look for partial matches.
 773                         // Note that there is no point in adding country terms here
 774                         // because country are omitted in the address.
 775                         if (isset($aValidTokens[$sToken]) && $sPhraseType != 'country') {
 776                             // Allow searching for a word - but at extra cost
 777                             foreach ($aValidTokens[$sToken] as $aSearchTerm) {
 778                                 if (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id']) {
 779                                     if ((!$bStructuredPhrases || $iPhrase > 0) && sizeof($aCurrentSearch['aName']) && strpos($sToken, ' ') === false) {
 780                                         $aSearch = $aCurrentSearch;
 781                                         $aSearch['iSearchRank'] += 1;
 782                                         if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency) {
 783                                             $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 784                                             if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 785                                         } elseif (isset($aValidTokens[' '.$sToken])) { // revert to the token version?
 786                                             $aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 787                                             $aSearch['iSearchRank'] += 1;
 788                                             if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 789                                             foreach ($aValidTokens[' '.$sToken] as $aSearchTermToken) {
 790                                                 if (empty($aSearchTermToken['country_code'])
 791                                                     && empty($aSearchTermToken['lat'])
 792                                                     && empty($aSearchTermToken['class'])
 793                                                 ) {
 794                                                     $aSearch = $aCurrentSearch;
 795                                                     $aSearch['iSearchRank'] += 1;
 796                                                     $aSearch['aAddress'][$aSearchTermToken['word_id']] = $aSearchTermToken['word_id'];
 797                                                     if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 798                                                 }
 799                                             }
 800                                         } else {
 801                                             $aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 802                                             if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
 803                                             if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 804                                         }
 805                                     }
 806
 807                                     if (!sizeof($aCurrentSearch['aName']) || $aCurrentSearch['iNamePhrase'] == $iPhrase) {
 808                                         $aSearch = $aCurrentSearch;
 809                                         $aSearch['iSearchRank'] += 1;
 810                                         if (!sizeof($aCurrentSearch['aName'])) $aSearch['iSearchRank'] += 1;
 811                                         if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
 812                                         if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency) {
 813                                             $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 814                                         } else {
 815                                             $aSearch['aNameNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 816                                         }
 817                                         $aSearch['iNamePhrase'] = $iPhrase;
 818                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 819                                     }
 820                                 }
 821                             }
 822                         } else {
 823                             // Allow skipping a word - but at EXTREAM cost
 824                             //$aSearch = $aCurrentSearch;
 825                             //$aSearch['iSearchRank']+=100;
 826                             //$aNewWordsetSearches[] = $aSearch;
 827                         }
 828                     }
 829                     // Sort and cut
 830                     usort($aNewWordsetSearches, 'bySearchRank');
 831                     $aWordsetSearches = array_slice($aNewWordsetSearches, 0, 50);
 832                 }
 833                 //var_Dump('<hr>',sizeof($aWordsetSearches)); exit;
 834
 835                 $aNewPhraseSearches = array_merge($aNewPhraseSearches, $aNewWordsetSearches);
 836                 usort($aNewPhraseSearches, 'bySearchRank');
 837
 838                 $aSearchHash = array();
 839                 foreach ($aNewPhraseSearches as $iSearch => $aSearch) {
 840                     $sHash = serialize($aSearch);
 841                     if (isset($aSearchHash[$sHash])) unset($aNewPhraseSearches[$iSearch]);
 842                     else $aSearchHash[$sHash] = 1;
 843                 }
 844
 845                 $aNewPhraseSearches = array_slice($aNewPhraseSearches, 0, 50);
 846             }
 847
 848             // Re-group the searches by their score, junk anything over 20 as just not worth trying
 849             $aGroupedSearches = array();
 850             foreach ($aNewPhraseSearches as $aSearch) {
 851                 if ($aSearch['iSearchRank'] < $this->iMaxRank) {
 852                     if (!isset($aGroupedSearches[$aSearch['iSearchRank']])) $aGroupedSearches[$aSearch['iSearchRank']] = array();
 853                     $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
 854                 }
 855             }
 856             ksort($aGroupedSearches);
 857
 858             $iSearchCount = 0;
 859             $aSearches = array();
 860             foreach ($aGroupedSearches as $iScore => $aNewSearches) {
 861                 $iSearchCount += sizeof($aNewSearches);
 862                 $aSearches = array_merge($aSearches, $aNewSearches);
 863                 if ($iSearchCount > 50) break;
 864             }
 865
 866             //if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
 867         }
 868         return $aGroupedSearches;
 869     }
 870
 871     /* Perform the actual query lookup.
 872
 873         Returns an ordered list of results, each with the following fields:
 874             osm_type: type of corresponding OSM object
 875                         N - node
 876                         W - way
 877                         R - relation
 878                         P - postcode (internally computed)
 879             osm_id: id of corresponding OSM object
 880             class: general object class (corresponds to tag key of primary OSM tag)
 881             type: subclass of object (corresponds to tag value of primary OSM tag)
 882             admin_level: see http://wiki.openstreetmap.org/wiki/Admin_level
 883             rank_search: rank in search hierarchy
 884                         (see also http://wiki.openstreetmap.org/wiki/Nominatim/Development_overview#Country_to_street_level)
 885             rank_address: rank in address hierarchy (determines orer in address)
 886             place_id: internal key (may differ between different instances)
 887             country_code: ISO country code
 888             langaddress: localized full address
 889             placename: localized name of object
 890             ref: content of ref tag (if available)
 891             lon: longitude
 892             lat: latitude
 893             importance: importance of place based on Wikipedia link count
 894             addressimportance: cumulated importance of address elements
 895             extra_place: type of place (for admin boundaries, if there is a place tag)
 896             aBoundingBox: bounding Box
 897             label: short description of the object class/type (English only)
 898             name: full name (currently the same as langaddress)
 899             foundorder: secondary ordering for places with same importance
 900     */
 901
 902
 903     public function lookup()
 904     {
 905         if (!$this->sQuery && !$this->aStructuredQuery) return array();
 906
 907         $sLanguagePrefArraySQL = "ARRAY[".join(',', array_map("getDBQuoted", $this->aLangPrefOrder))."]";
 908         $sCountryCodesSQL = false;
 909         if ($this->aCountryCodes) {
 910             $sCountryCodesSQL = join(',', array_map('addQuotes', $this->aCountryCodes));
 911         }
 912
 913         $sQuery = $this->sQuery;
 914         if (!preg_match('//u', $sQuery)) {
 915             userError("Query string is not UTF-8 encoded.");
 916         }
 917
 918         // Conflicts between US state abreviations and various words for 'the' in different languages
 919         if (isset($this->aLangPrefOrder['name:en'])) {
 920             $sQuery = preg_replace('/(^|,)\s*il\s*(,|$)/', '\1illinois\2', $sQuery);
 921             $sQuery = preg_replace('/(^|,)\s*al\s*(,|$)/', '\1alabama\2', $sQuery);
 922             $sQuery = preg_replace('/(^|,)\s*la\s*(,|$)/', '\1louisiana\2', $sQuery);
 923         }
 924
 925         $bBoundingBoxSearch = $this->bBoundedSearch && $this->sViewboxSmallSQL;
 926         if ($this->sViewboxCentreSQL) {
 927             // For complex viewboxes (routes) precompute the bounding geometry
 928             $sGeom = chksql(
 929                 $this->oDB->getOne("select ".$this->sViewboxSmallSQL),
 930                 "Could not get small viewbox"
 931             );
 932             $this->sViewboxSmallSQL = "'".$sGeom."'::geometry";
 933
 934             $sGeom = chksql(
 935                 $this->oDB->getOne("select ".$this->sViewboxLargeSQL),
 936                 "Could not get large viewbox"
 937             );
 938             $this->sViewboxLargeSQL = "'".$sGeom."'::geometry";
 939         }
 940
 941         // Do we have anything that looks like a lat/lon pair?
 942         $oNearPoint = false;
 943         if ($aLooksLike = NearPoint::extractFromQuery($sQuery)) {
 944             $oNearPoint = $aLooksLike['pt'];
 945             $sQuery = $aLooksLike['query'];
 946         }
 947
 948         $aSearchResults = array();
 949         if ($sQuery || $this->aStructuredQuery) {
 950             // Start with a blank search
 951             $aSearches = array(
 952                           array(
 953                            'iSearchRank' => 0,
 954                            'iNamePhrase' => -1,
 955                            'sCountryCode' => false,
 956                            'aName' => array(),
 957                            'aAddress' => array(),
 958                            'aFullNameAddress' => array(),
 959                            'aNameNonSearch' => array(),
 960                            'aAddressNonSearch' => array(),
 961                            'sOperator' => '',
 962                            'aFeatureName' => array(),
 963                            'sClass' => '',
 964                            'sType' => '',
 965                            'sHouseNumber' => '',
 966                            'oNear' => $oNearPoint
 967                           )
 968                          );
 969
 970             // Any 'special' terms in the search?
 971             $bSpecialTerms = false;
 972             preg_match_all('/\\[(.*)=(.*)\\]/', $sQuery, $aSpecialTermsRaw, PREG_SET_ORDER);
 973             $aSpecialTerms = array();
 974             foreach ($aSpecialTermsRaw as $aSpecialTerm) {
 975                 $sQuery = str_replace($aSpecialTerm[0], ' ', $sQuery);
 976                 $aSpecialTerms[strtolower($aSpecialTerm[1])] = $aSpecialTerm[2];
 977             }
 978
 979             preg_match_all('/\\[([\\w ]*)\\]/u', $sQuery, $aSpecialTermsRaw, PREG_SET_ORDER);
 980             $aSpecialTerms = array();
 981             if (isset($this->aStructuredQuery['amenity']) && $this->aStructuredQuery['amenity']) {
 982                 $aSpecialTermsRaw[] = array('['.$this->aStructuredQuery['amenity'].']', $this->aStructuredQuery['amenity']);
 983                 unset($this->aStructuredQuery['amenity']);
 984             }
 985
 986             foreach ($aSpecialTermsRaw as $aSpecialTerm) {
 987                 $sQuery = str_replace($aSpecialTerm[0], ' ', $sQuery);
 988                 $sToken = chksql($this->oDB->getOne("SELECT make_standard_name('".$aSpecialTerm[1]."') AS string"));
 989                 $sSQL = 'SELECT * ';
 990                 $sSQL .= 'FROM ( ';
 991                 $sSQL .= '   SELECT word_id, word_token, word, class, type, country_code, operator';
 992                 $sSQL .= '   FROM word ';
 993                 $sSQL .= '   WHERE word_token in (\' '.$sToken.'\')';
 994                 $sSQL .= ') AS x ';
 995                 $sSQL .= ' WHERE (class is not null AND class not in (\'place\')) ';
 996                 $sSQL .= ' OR country_code is not null';
 997                 if (CONST_Debug) var_Dump($sSQL);
 998                 $aSearchWords = chksql($this->oDB->getAll($sSQL));
 999                 $aNewSearches = array();
1000                 foreach ($aSearches as $aSearch) {
1001                     foreach ($aSearchWords as $aSearchTerm) {
1002                         $aNewSearch = $aSearch;
1003                         if ($aSearchTerm['country_code']) {
1004                             $aNewSearch['sCountryCode'] = strtolower($aSearchTerm['country_code']);
1005                             $aNewSearches[] = $aNewSearch;
1006                             $bSpecialTerms = true;
1007                         }
1008                         if ($aSearchTerm['class']) {
1009                             $aNewSearch['sClass'] = $aSearchTerm['class'];
1010                             $aNewSearch['sType'] = $aSearchTerm['type'];
1011                             $aNewSearches[] = $aNewSearch;
1012                             $bSpecialTerms = true;
1013                         }
1014                     }
1015                 }
1016                 $aSearches = $aNewSearches;
1017             }
1018
1019             // Split query into phrases
1020             // Commas are used to reduce the search space by indicating where phrases split
1021             if ($this->aStructuredQuery) {
1022                 $aPhrases = $this->aStructuredQuery;
1023                 $bStructuredPhrases = true;
1024             } else {
1025                 $aPhrases = explode(',', $sQuery);
1026                 $bStructuredPhrases = false;
1027             }
1028
1029             // Convert each phrase to standard form
1030             // Create a list of standard words
1031             // Get all 'sets' of words
1032             // Generate a complete list of all
1033             $aTokens = array();
1034             foreach ($aPhrases as $iPhrase => $sPhrase) {
1035                 $aPhrase = chksql(
1036                     $this->oDB->getRow("SELECT make_standard_name('".pg_escape_string($sPhrase)."') as string"),
1037                     "Cannot normalize query string (is it a UTF-8 string?)"
1038                 );
1039                 if (trim($aPhrase['string'])) {
1040                     $aPhrases[$iPhrase] = $aPhrase;
1041                     $aPhrases[$iPhrase]['words'] = explode(' ', $aPhrases[$iPhrase]['string']);
1042                     $aPhrases[$iPhrase]['wordsets'] = getWordSets($aPhrases[$iPhrase]['words'], 0);
1043                     $aTokens = array_merge($aTokens, getTokensFromSets($aPhrases[$iPhrase]['wordsets']));
1044                 } else {
1045                     unset($aPhrases[$iPhrase]);
1046                 }
1047             }
1048
1049             // Reindex phrases - we make assumptions later on that they are numerically keyed in order
1050             $aPhraseTypes = array_keys($aPhrases);
1051             $aPhrases = array_values($aPhrases);
1052
1053             if (sizeof($aTokens)) {
1054                 // Check which tokens we have, get the ID numbers
1055                 $sSQL = 'SELECT word_id, word_token, word, class, type, country_code, operator, search_name_count';
1056                 $sSQL .= ' FROM word ';
1057                 $sSQL .= ' WHERE word_token in ('.join(',', array_map("getDBQuoted", $aTokens)).')';
1058
1059                 if (CONST_Debug) var_Dump($sSQL);
1060
1061                 $aValidTokens = array();
1062                 if (sizeof($aTokens)) {
1063                     $aDatabaseWords = chksql(
1064                         $this->oDB->getAll($sSQL),
1065                         "Could not get word tokens."
1066                     );
1067                 } else {
1068                     $aDatabaseWords = array();
1069                 }
1070                 $aPossibleMainWordIDs = array();
1071                 $aWordFrequencyScores = array();
1072                 foreach ($aDatabaseWords as $aToken) {
1073                     // Very special case - require 2 letter country param to match the country code found
1074                     if ($bStructuredPhrases && $aToken['country_code'] && !empty($this->aStructuredQuery['country'])
1075                         && strlen($this->aStructuredQuery['country']) == 2 && strtolower($this->aStructuredQuery['country']) != $aToken['country_code']
1076                     ) {
1077                         continue;
1078                     }
1079
1080                     if (isset($aValidTokens[$aToken['word_token']])) {
1081                         $aValidTokens[$aToken['word_token']][] = $aToken;
1082                     } else {
1083                         $aValidTokens[$aToken['word_token']] = array($aToken);
1084                     }
1085                     if (!$aToken['class'] && !$aToken['country_code']) $aPossibleMainWordIDs[$aToken['word_id']] = 1;
1086                     $aWordFrequencyScores[$aToken['word_id']] = $aToken['search_name_count'] + 1;
1087                 }
1088                 if (CONST_Debug) var_Dump($aPhrases, $aValidTokens);
1089
1090                 // Try and calculate GB postcodes we might be missing
1091                 foreach ($aTokens as $sToken) {
1092                     // Source of gb postcodes is now definitive - always use
1093                     if (preg_match('/^([A-Z][A-Z]?[0-9][0-9A-Z]? ?[0-9])([A-Z][A-Z])$/', strtoupper(trim($sToken)), $aData)) {
1094                         if (substr($aData[1], -2, 1) != ' ') {
1095                             $aData[0] = substr($aData[0], 0, strlen($aData[1])-1).' '.substr($aData[0], strlen($aData[1])-1);
1096                             $aData[1] = substr($aData[1], 0, -1).' '.substr($aData[1], -1, 1);
1097                         }
1098                         $aGBPostcodeLocation = gbPostcodeCalculate($aData[0], $aData[1], $aData[2], $this->oDB);
1099                         if ($aGBPostcodeLocation) {
1100                             $aValidTokens[$sToken] = $aGBPostcodeLocation;
1101                         }
1102                     } elseif (!isset($aValidTokens[$sToken]) && preg_match('/^([0-9]{5}) [0-9]{4}$/', $sToken, $aData)) {
1103                         // US ZIP+4 codes - if there is no token,
1104                         // merge in the 5-digit ZIP code
1105                         if (isset($aValidTokens[$aData[1]])) {
1106                             foreach ($aValidTokens[$aData[1]] as $aToken) {
1107                                 if (!$aToken['class']) {
1108                                     if (isset($aValidTokens[$sToken])) {
1109                                         $aValidTokens[$sToken][] = $aToken;
1110                                     } else {
1111                                         $aValidTokens[$sToken] = array($aToken);
1112                                     }
1113                                 }
1114                             }
1115                         }
1116                     }
1117                 }
1118
1119                 foreach ($aTokens as $sToken) {
1120                     // Unknown single word token with a number - assume it is a house number
1121                     if (!isset($aValidTokens[' '.$sToken]) && strpos($sToken, ' ') === false && preg_match('/[0-9]/', $sToken)) {
1122                         $aValidTokens[' '.$sToken] = array(array('class' => 'place', 'type' => 'house'));
1123                     }
1124                 }
1125
1126                 // Any words that have failed completely?
1127                 // TODO: suggestions
1128
1129                 // Start the search process
1130                 // array with: placeid => -1 | tiger-housenumber
1131                 $aResultPlaceIDs = array();
1132
1133                 $aGroupedSearches = $this->getGroupedSearches($aSearches, $aPhraseTypes, $aPhrases, $aValidTokens, $aWordFrequencyScores, $bStructuredPhrases);
1134
1135                 if ($this->bReverseInPlan) {
1136                     // Reverse phrase array and also reverse the order of the wordsets in
1137                     // the first and final phrase. Don't bother about phrases in the middle
1138                     // because order in the address doesn't matter.
1139                     $aPhrases = array_reverse($aPhrases);
1140                     $aPhrases[0]['wordsets'] = getInverseWordSets($aPhrases[0]['words'], 0);
1141                     if (sizeof($aPhrases) > 1) {
1142                         $aFinalPhrase = end($aPhrases);
1143                         $aPhrases[sizeof($aPhrases)-1]['wordsets'] = getInverseWordSets($aFinalPhrase['words'], 0);
1144                     }
1145                     $aReverseGroupedSearches = $this->getGroupedSearches($aSearches, null, $aPhrases, $aValidTokens, $aWordFrequencyScores, false);
1146
1147                     foreach ($aGroupedSearches as $aSearches) {
1148                         foreach ($aSearches as $aSearch) {
1149                             if ($aSearch['iSearchRank'] < $this->iMaxRank) {
1150                                 if (!isset($aReverseGroupedSearches[$aSearch['iSearchRank']])) $aReverseGroupedSearches[$aSearch['iSearchRank']] = array();
1151                                 $aReverseGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
1152                             }
1153                         }
1154                     }
1155
1156                     $aGroupedSearches = $aReverseGroupedSearches;
1157                     ksort($aGroupedSearches);
1158                 }
1159             } else {
1160                 // Re-group the searches by their score, junk anything over 20 as just not worth trying
1161                 $aGroupedSearches = array();
1162                 foreach ($aSearches as $aSearch) {
1163                     if ($aSearch['iSearchRank'] < $this->iMaxRank) {
1164                         if (!isset($aGroupedSearches[$aSearch['iSearchRank']])) $aGroupedSearches[$aSearch['iSearchRank']] = array();
1165                         $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
1166                     }
1167                 }
1168                 ksort($aGroupedSearches);
1169             }
1170
1171             if (CONST_Debug) var_Dump($aGroupedSearches);
1172             if (CONST_Search_TryDroppedAddressTerms && sizeof($this->aStructuredQuery) > 0) {
1173                 $aCopyGroupedSearches = $aGroupedSearches;
1174                 foreach ($aCopyGroupedSearches as $iGroup => $aSearches) {
1175                     foreach ($aSearches as $iSearch => $aSearch) {
1176                         $aReductionsList = array($aSearch['aAddress']);
1177                         $iSearchRank = $aSearch['iSearchRank'];
1178                         while (sizeof($aReductionsList) > 0) {
1179                             $iSearchRank += 5;
1180                             if ($iSearchRank > iMaxRank) break 3;
1181                             $aNewReductionsList = array();
1182                             foreach ($aReductionsList as $aReductionsWordList) {
1183                                 for ($iReductionWord = 0; $iReductionWord < sizeof($aReductionsWordList); $iReductionWord++) {
1184                                     $aReductionsWordListResult = array_merge(array_slice($aReductionsWordList, 0, $iReductionWord), array_slice($aReductionsWordList, $iReductionWord+1));
1185                                     $aReverseSearch = $aSearch;
1186                                     $aSearch['aAddress'] = $aReductionsWordListResult;
1187                                     $aSearch['iSearchRank'] = $iSearchRank;
1188                                     $aGroupedSearches[$iSearchRank][] = $aReverseSearch;
1189                                     if (sizeof($aReductionsWordListResult) > 0) {
1190                                         $aNewReductionsList[] = $aReductionsWordListResult;
1191                                     }
1192                                 }
1193                             }
1194                             $aReductionsList = $aNewReductionsList;
1195                         }
1196                     }
1197                 }
1198                 ksort($aGroupedSearches);
1199             }
1200
1201             // Filter out duplicate searches
1202             $aSearchHash = array();
1203             foreach ($aGroupedSearches as $iGroup => $aSearches) {
1204                 foreach ($aSearches as $iSearch => $aSearch) {
1205                     $sHash = serialize($aSearch);
1206                     if (isset($aSearchHash[$sHash])) {
1207                         unset($aGroupedSearches[$iGroup][$iSearch]);
1208                         if (sizeof($aGroupedSearches[$iGroup]) == 0) unset($aGroupedSearches[$iGroup]);
1209                     } else {
1210                         $aSearchHash[$sHash] = 1;
1211                     }
1212                 }
1213             }
1214
1215             if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
1216
1217             $iGroupLoop = 0;
1218             $iQueryLoop = 0;
1219             foreach ($aGroupedSearches as $iGroupedRank => $aSearches) {
1220                 $iGroupLoop++;
1221                 foreach ($aSearches as $aSearch) {
1222                     $iQueryLoop++;
1223                     $searchedHousenumber = -1;
1224
1225                     if (CONST_Debug) echo "<hr><b>Search Loop, group $iGroupLoop, loop $iQueryLoop</b>";
1226                     if (CONST_Debug) _debugDumpGroupedSearches(array($iGroupedRank => array($aSearch)), $aValidTokens);
1227
1228                     // No location term?
1229                     if (!sizeof($aSearch['aName']) && !sizeof($aSearch['aAddress']) && !$aSearch['oNear']) {
1230                         if ($aSearch['sCountryCode'] && !$aSearch['sClass'] && !$aSearch['sHouseNumber']) {
1231                             // Just looking for a country by code - look it up
1232                             if (4 >= $this->iMinAddressRank && 4 <= $this->iMaxAddressRank) {
1233                                 $sSQL = "SELECT place_id FROM placex WHERE calculated_country_code='".$aSearch['sCountryCode']."' AND rank_search = 4";
1234                                 if ($sCountryCodesSQL) $sSQL .= " AND calculated_country_code in ($sCountryCodesSQL)";
1235                                 if ($bBoundingBoxSearch)
1236                                     $sSQL .= " AND _st_intersects($this->sViewboxSmallSQL, geometry)";
1237                                 $sSQL .= " ORDER BY st_area(geometry) DESC LIMIT 1";
1238                                 if (CONST_Debug) var_dump($sSQL);
1239                                 $aPlaceIDs = chksql($this->oDB->getCol($sSQL));
1240                             } else {
1241                                 $aPlaceIDs = array();
1242                             }
1243                         } else {
1244                             if (!$bBoundingBoxSearch && !$aSearch['oNear']) continue;
1245                             if (!$aSearch['sClass']) continue;
1246
1247                             $sSQL = "SELECT COUNT(*) FROM pg_tables WHERE tablename = 'place_classtype_".$aSearch['sClass']."_".$aSearch['sType']."'";
1248                             if (chksql($this->oDB->getOne($sSQL))) {
1249                                 $sSQL = "SELECT place_id FROM place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." ct";
1250                                 if ($sCountryCodesSQL) $sSQL .= " JOIN placex USING (place_id)";
1251                                 $sSQL .= " WHERE st_contains($this->sViewboxSmallSQL, ct.centroid)";
1252                                 if ($sCountryCodesSQL) $sSQL .= " AND calculated_country_code in ($sCountryCodesSQL)";
1253                                 if (sizeof($this->aExcludePlaceIDs)) {
1254                                     $sSQL .= " AND place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1255                                 }
1256                                 if ($this->sViewboxCentreSQL) $sSQL .= " ORDER BY ST_Distance($this->sViewboxCentreSQL, ct.centroid) ASC";
1257                                 $sSQL .= " limit $this->iLimit";
1258                                 if (CONST_Debug) var_dump($sSQL);
1259                                 $aPlaceIDs = chksql($this->oDB->getCol($sSQL));
1260
1261                                 // If excluded place IDs are given, it is fair to assume that
1262                                 // there have been results in the small box, so no further
1263                                 // expansion in that case.
1264                                 // Also don't expand if bounded results were requested.
1265                                 if (!sizeof($aPlaceIDs) && !sizeof($this->aExcludePlaceIDs) && !$this->bBoundedSearch) {
1266                                     $sSQL = "SELECT place_id FROM place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." ct";
1267                                     if ($sCountryCodesSQL) $sSQL .= " join placex using (place_id)";
1268                                     $sSQL .= " WHERE ST_Contains($this->sViewboxLargeSQL, ct.centroid)";
1269                                     if ($sCountryCodesSQL) $sSQL .= " AND calculated_country_code in ($sCountryCodesSQL)";
1270                                     if ($this->sViewboxCentreSQL) $sSQL .= " ORDER BY ST_Distance($this->sViewboxCentreSQL, ct.centroid) ASC";
1271                                     $sSQL .= " LIMIT $this->iLimit";
1272                                     if (CONST_Debug) var_dump($sSQL);
1273                                     $aPlaceIDs = chksql($this->oDB->getCol($sSQL));
1274                                 }
1275                             } else {
1276                                 $sSQL = "SELECT place_id ";
1277                                 $sSQL .= "FROM placex ";
1278                                 $sSQL .= "WHERE class='".$aSearch['sClass']."' ";
1279                                 $sSQL .= "  AND type='".$aSearch['sType']."'";
1280                                 $sSQL .= "  AND ST_Contains($this->sViewboxSmallSQL, geometry) ";
1281                                 $sSQL .= "  AND linked_place_id is null";
1282                                 if ($sCountryCodesSQL) $sSQL .= " AND calculated_country_code in ($sCountryCodesSQL)";
1283                                 if ($this->sViewboxCentreSQL)   $sSQL .= " ORDER BY ST_Distance($this->sViewboxCentreSQL, centroid) ASC";
1284                                 $sSQL .= " LIMIT $this->iLimit";
1285                                 if (CONST_Debug) var_dump($sSQL);
1286                                 $aPlaceIDs = chksql($this->oDB->getCol($sSQL));
1287                             }
1288                         }
1289                     } elseif ($aSearch['oNear'] && !sizeof($aSearch['aName']) && !sizeof($aSearch['aAddress']) && !$aSearch['sClass']) {
1290                         // If a coordinate is given, the search must either
1291                         // be for a name or a special search. Ignore everythin else.
1292                         $aPlaceIDs = array();
1293                     } else {
1294                         $aPlaceIDs = array();
1295
1296                         // First we need a position, either aName or fLat or both
1297                         $aTerms = array();
1298                         $aOrder = array();
1299
1300                         if ($aSearch['sHouseNumber'] && sizeof($aSearch['aAddress'])) {
1301                             $sHouseNumberRegex = '\\\\m'.$aSearch['sHouseNumber'].'\\\\M';
1302                             $aOrder[] = "";
1303                             $aOrder[0] = "  (";
1304                             $aOrder[0] .= "   EXISTS(";
1305                             $aOrder[0] .= "     SELECT place_id ";
1306                             $aOrder[0] .= "     FROM placex ";
1307                             $aOrder[0] .= "     WHERE parent_place_id = search_name.place_id";
1308                             $aOrder[0] .= "       AND transliteration(housenumber) ~* E'".$sHouseNumberRegex."' ";
1309                             $aOrder[0] .= "     LIMIT 1";
1310                             $aOrder[0] .= "   ) ";
1311                             // also housenumbers from interpolation lines table are needed
1312                             $aOrder[0] .= "   OR EXISTS(";
1313                             $aOrder[0] .= "     SELECT place_id ";
1314                             $aOrder[0] .= "     FROM location_property_osmline ";
1315                             $aOrder[0] .= "     WHERE parent_place_id = search_name.place_id";
1316                             $aOrder[0] .= "       AND startnumber is not NULL";
1317                             $aOrder[0] .= "       AND ".intval($aSearch['sHouseNumber']).">=startnumber ";
1318                             $aOrder[0] .= "       AND ".intval($aSearch['sHouseNumber'])."<=endnumber ";
1319                             $aOrder[0] .= "     LIMIT 1";
1320                             $aOrder[0] .= "   )";
1321                             $aOrder[0] .= " )";
1322                             $aOrder[0] .= " DESC";
1323                         }
1324
1325                         // TODO: filter out the pointless search terms (2 letter name tokens and less)
1326                         // they might be right - but they are just too darned expensive to run
1327                         if (sizeof($aSearch['aName'])) $aTerms[] = "name_vector @> ARRAY[".join($aSearch['aName'], ",")."]";
1328                         if (sizeof($aSearch['aNameNonSearch'])) $aTerms[] = "array_cat(name_vector,ARRAY[]::integer[]) @> ARRAY[".join($aSearch['aNameNonSearch'], ",")."]";
1329                         if (sizeof($aSearch['aAddress']) && $aSearch['aName'] != $aSearch['aAddress']) {
1330                             // For infrequent name terms disable index usage for address
1331                             if (CONST_Search_NameOnlySearchFrequencyThreshold
1332                                 && sizeof($aSearch['aName']) == 1
1333                                 && $aWordFrequencyScores[$aSearch['aName'][reset($aSearch['aName'])]] < CONST_Search_NameOnlySearchFrequencyThreshold
1334                             ) {
1335                                 $aTerms[] = "array_cat(nameaddress_vector,ARRAY[]::integer[]) @> ARRAY[".join(array_merge($aSearch['aAddress'], $aSearch['aAddressNonSearch']), ",")."]";
1336                             } else {
1337                                 $aTerms[] = "nameaddress_vector @> ARRAY[".join($aSearch['aAddress'], ",")."]";
1338                                 if (sizeof($aSearch['aAddressNonSearch'])) {
1339                                     $aTerms[] = "array_cat(nameaddress_vector,ARRAY[]::integer[]) @> ARRAY[".join($aSearch['aAddressNonSearch'], ",")."]";
1340                                 }
1341                             }
1342                         }
1343                         if ($aSearch['sCountryCode']) $aTerms[] = "country_code = '".pg_escape_string($aSearch['sCountryCode'])."'";
1344                         if ($aSearch['sHouseNumber']) {
1345                             $aTerms[] = "address_rank between 16 and 27";
1346                         } else {
1347                             if ($this->iMinAddressRank > 0) {
1348                                 $aTerms[] = "address_rank >= ".$this->iMinAddressRank;
1349                             }
1350                             if ($this->iMaxAddressRank < 30) {
1351                                 $aTerms[] = "address_rank <= ".$this->iMaxAddressRank;
1352                             }
1353                         }
1354                         if ($aSearch['oNear']) {
1355                             $aTerms[] = $aSearch['oNear']->withinSQL('centroid');
1356
1357                             $aOrder[] = $aSearch['oNear']->distanceSQL('centroid');
1358                         }
1359                         if (sizeof($this->aExcludePlaceIDs)) {
1360                             $aTerms[] = "place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1361                         }
1362                         if ($sCountryCodesSQL) {
1363                             $aTerms[] = "country_code in ($sCountryCodesSQL)";
1364                         }
1365
1366                         if ($bBoundingBoxSearch) $aTerms[] = "centroid && $this->sViewboxSmallSQL";
1367                         if ($oNearPoint) {
1368                             $aOrder[] = $oNearPoint->distanceSQL('centroid');
1369                         }
1370
1371                         if ($aSearch['sHouseNumber']) {
1372                             $sImportanceSQL = '- abs(26 - address_rank) + 3';
1373                         } else {
1374                             $sImportanceSQL = '(CASE WHEN importance = 0 OR importance IS NULL THEN 0.75-(search_rank::float/40) ELSE importance END)';
1375                         }
1376                         if ($this->sViewboxSmallSQL) $sImportanceSQL .= " * CASE WHEN ST_Contains($this->sViewboxSmallSQL, centroid) THEN 1 ELSE 0.5 END";
1377                         if ($this->sViewboxLargeSQL) $sImportanceSQL .= " * CASE WHEN ST_Contains($this->sViewboxLargeSQL, centroid) THEN 1 ELSE 0.5 END";
1378
1379                         $aOrder[] = "$sImportanceSQL DESC";
1380                         if (sizeof($aSearch['aFullNameAddress'])) {
1381                             $sExactMatchSQL = ' ( ';
1382                             $sExactMatchSQL .= '   SELECT count(*) FROM ( ';
1383                             $sExactMatchSQL .= '      SELECT unnest(ARRAY['.join($aSearch['aFullNameAddress'], ",").']) ';
1384                             $sExactMatchSQL .= '      INTERSECT ';
1385                             $sExactMatchSQL .= '      SELECT unnest(nameaddress_vector)';
1386                             $sExactMatchSQL .= '   ) s';
1387                             $sExactMatchSQL .= ') as exactmatch';
1388                             $aOrder[] = 'exactmatch DESC';
1389                         } else {
1390                             $sExactMatchSQL = '0::int as exactmatch';
1391                         }
1392
1393                         if (sizeof($aTerms)) {
1394                             $sSQL = "SELECT place_id, ";
1395                             $sSQL .= $sExactMatchSQL;
1396                             $sSQL .= " FROM search_name";
1397                             $sSQL .= " WHERE ".join(' and ', $aTerms);
1398                             $sSQL .= " ORDER BY ".join(', ', $aOrder);
1399                             if ($aSearch['sHouseNumber'] || $aSearch['sClass']) {
1400                                 $sSQL .= " LIMIT 20";
1401                             } elseif (!sizeof($aSearch['aName']) && !sizeof($aSearch['aAddress']) && $aSearch['sClass']) {
1402                                 $sSQL .= " LIMIT 1";
1403                             } else {
1404                                 $sSQL .= " LIMIT ".$this->iLimit;
1405                             }
1406
1407                             if (CONST_Debug) var_dump($sSQL);
1408                             $aViewBoxPlaceIDs = chksql(
1409                                 $this->oDB->getAll($sSQL),
1410                                 "Could not get places for search terms."
1411                             );
1412                             //var_dump($aViewBoxPlaceIDs);
1413                             // Did we have an viewbox matches?
1414                             $aPlaceIDs = array();
1415                             $bViewBoxMatch = false;
1416                             foreach ($aViewBoxPlaceIDs as $aViewBoxRow) {
1417                                 //if ($bViewBoxMatch == 1 && $aViewBoxRow['in_small'] == 'f') break;
1418                                 //if ($bViewBoxMatch == 2 && $aViewBoxRow['in_large'] == 'f') break;
1419                                 //if ($aViewBoxRow['in_small'] == 't') $bViewBoxMatch = 1;
1420                                 //else if ($aViewBoxRow['in_large'] == 't') $bViewBoxMatch = 2;
1421                                 $aPlaceIDs[] = $aViewBoxRow['place_id'];
1422                                 $this->exactMatchCache[$aViewBoxRow['place_id']] = $aViewBoxRow['exactmatch'];
1423                             }
1424                         }
1425                         //var_Dump($aPlaceIDs);
1426                         //exit;
1427
1428                         //now search for housenumber, if housenumber provided
1429                         if ($aSearch['sHouseNumber'] && sizeof($aPlaceIDs)) {
1430                             $searchedHousenumber = intval($aSearch['sHouseNumber']);
1431                             $aRoadPlaceIDs = $aPlaceIDs;
1432                             $sPlaceIDs = join(',', $aPlaceIDs);
1433
1434                             // Now they are indexed, look for a house attached to a street we found
1435                             $sHouseNumberRegex = '\\\\m'.$aSearch['sHouseNumber'].'\\\\M';
1436                             $sSQL = "SELECT place_id FROM placex ";
1437                             $sSQL .= "WHERE parent_place_id in (".$sPlaceIDs.") and transliteration(housenumber) ~* E'".$sHouseNumberRegex."'";
1438                             if (sizeof($this->aExcludePlaceIDs)) {
1439                                 $sSQL .= " AND place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1440                             }
1441                             $sSQL .= " LIMIT $this->iLimit";
1442                             if (CONST_Debug) var_dump($sSQL);
1443                             $aPlaceIDs = chksql($this->oDB->getCol($sSQL));
1444
1445                             // if nothing found, search in the interpolation line table
1446                             if (!sizeof($aPlaceIDs)) {
1447                                 // do we need to use transliteration and the regex for housenumbers???
1448                                 //new query for lines, not housenumbers anymore
1449                                 $sSQL = "SELECT distinct place_id FROM location_property_osmline";
1450                                 $sSQL .= " WHERE startnumber is not NULL and parent_place_id in (".$sPlaceIDs.") and (";
1451                                 if ($searchedHousenumber%2 == 0) {
1452                                     //if housenumber is even, look for housenumber in streets with interpolationtype even or all
1453                                     $sSQL .= "interpolationtype='even'";
1454                                 } else {
1455                                     //look for housenumber in streets with interpolationtype odd or all
1456                                     $sSQL .= "interpolationtype='odd'";
1457                                 }
1458                                 $sSQL .= " or interpolationtype='all') and ";
1459                                 $sSQL .= $searchedHousenumber.">=startnumber and ";
1460                                 $sSQL .= $searchedHousenumber."<=endnumber";
1461
1462                                 if (sizeof($this->aExcludePlaceIDs)) {
1463                                     $sSQL .= " AND place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1464                                 }
1465                                 //$sSQL .= " limit $this->iLimit";
1466                                 if (CONST_Debug) var_dump($sSQL);
1467                                 //get place IDs
1468                                 $aPlaceIDs = chksql($this->oDB->getCol($sSQL, 0));
1469                             }
1470
1471                             // If nothing found try the aux fallback table
1472                             if (CONST_Use_Aux_Location_data && !sizeof($aPlaceIDs)) {
1473                                 $sSQL = "SELECT place_id FROM location_property_aux ";
1474                                 $sSQL .= " WHERE parent_place_id in (".$sPlaceIDs.") ";
1475                                 $sSQL .= " AND housenumber = '".pg_escape_string($aSearch['sHouseNumber'])."'";
1476                                 if (sizeof($this->aExcludePlaceIDs)) {
1477                                     $sSQL .= " AND parent_place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1478                                 }
1479                                 //$sSQL .= " limit $this->iLimit";
1480                                 if (CONST_Debug) var_dump($sSQL);
1481                                 $aPlaceIDs = chksql($this->oDB->getCol($sSQL));
1482                             }
1483
1484                             //if nothing was found in placex or location_property_aux, then search in Tiger data for this housenumber(location_property_tiger)
1485                             if (CONST_Use_US_Tiger_Data && !sizeof($aPlaceIDs)) {
1486                                 $sSQL = "SELECT distinct place_id FROM location_property_tiger";
1487                                 $sSQL .= " WHERE parent_place_id in (".$sPlaceIDs.") and (";
1488                                 if ($searchedHousenumber%2 == 0) {
1489                                     $sSQL .= "interpolationtype='even'";
1490                                 } else {
1491                                     $sSQL .= "interpolationtype='odd'";
1492                                 }
1493                                 $sSQL .= " or interpolationtype='all') and ";
1494                                 $sSQL .= $searchedHousenumber.">=startnumber and ";
1495                                 $sSQL .= $searchedHousenumber."<=endnumber";
1496
1497                                 if (sizeof($this->aExcludePlaceIDs)) {
1498                                     $sSQL .= " AND place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1499                                 }
1500                                 //$sSQL .= " limit $this->iLimit";
1501                                 if (CONST_Debug) var_dump($sSQL);
1502                                 //get place IDs
1503                                 $aPlaceIDs = chksql($this->oDB->getCol($sSQL, 0));
1504                             }
1505
1506                             // Fallback to the road (if no housenumber was found)
1507                             if (!sizeof($aPlaceIDs) && preg_match('/[0-9]+/', $aSearch['sHouseNumber'])) {
1508                                 $aPlaceIDs = $aRoadPlaceIDs;
1509                                 //set to -1, if no housenumbers were found
1510                                 $searchedHousenumber = -1;
1511                             }
1512                             //else: housenumber was found, remains saved in searchedHousenumber
1513                         }
1514
1515
1516                         if ($aSearch['sClass'] && sizeof($aPlaceIDs)) {
1517                             $sPlaceIDs = join(',', $aPlaceIDs);
1518                             $aClassPlaceIDs = array();
1519
1520                             if (!$aSearch['sOperator'] || $aSearch['sOperator'] == 'name') {
1521                                 // If they were searching for a named class (i.e. 'Kings Head pub') then we might have an extra match
1522                                 $sSQL = "SELECT place_id ";
1523                                 $sSQL .= " FROM placex ";
1524                                 $sSQL .= " WHERE place_id in ($sPlaceIDs) ";
1525                                 $sSQL .= "   AND class='".$aSearch['sClass']."' ";
1526                                 $sSQL .= "   AND type='".$aSearch['sType']."'";
1527                                 $sSQL .= "   AND linked_place_id is null";
1528                                 if ($sCountryCodesSQL) $sSQL .= " AND calculated_country_code in ($sCountryCodesSQL)";
1529                                 $sSQL .= " ORDER BY rank_search ASC ";
1530                                 $sSQL .= " LIMIT $this->iLimit";
1531                                 if (CONST_Debug) var_dump($sSQL);
1532                                 $aClassPlaceIDs = chksql($this->oDB->getCol($sSQL));
1533                             }
1534
1535                             if (!$aSearch['sOperator'] || $aSearch['sOperator'] == 'near') { // & in
1536                                 $sSQL = "SELECT count(*) FROM pg_tables ";
1537                                 $sSQL .= "WHERE tablename = 'place_classtype_".$aSearch['sClass']."_".$aSearch['sType']."'";
1538                                 $bCacheTable = chksql($this->oDB->getOne($sSQL));
1539
1540                                 $sSQL = "SELECT min(rank_search) FROM placex WHERE place_id in ($sPlaceIDs)";
1541
1542                                 if (CONST_Debug) var_dump($sSQL);
1543                                 $this->iMaxRank = ((int)chksql($this->oDB->getOne($sSQL)));
1544
1545                                 // For state / country level searches the normal radius search doesn't work very well
1546                                 $sPlaceGeom = false;
1547                                 if ($this->iMaxRank < 9 && $bCacheTable) {
1548                                     // Try and get a polygon to search in instead
1549                                     $sSQL = "SELECT geometry ";
1550                                     $sSQL .= " FROM placex";
1551                                     $sSQL .= " WHERE place_id in ($sPlaceIDs)";
1552                                     $sSQL .= "   AND rank_search < $this->iMaxRank + 5";
1553                                     $sSQL .= "   AND ST_Geometrytype(geometry) in ('ST_Polygon','ST_MultiPolygon')";
1554                                     $sSQL .= " ORDER BY rank_search ASC ";
1555                                     $sSQL .= " LIMIT 1";
1556                                     if (CONST_Debug) var_dump($sSQL);
1557                                     $sPlaceGeom = chksql($this->oDB->getOne($sSQL));
1558                                 }
1559
1560                                 if ($sPlaceGeom) {
1561                                     $sPlaceIDs = false;
1562                                 } else {
1563                                     $this->iMaxRank += 5;
1564                                     $sSQL = "SELECT place_id FROM placex WHERE place_id in ($sPlaceIDs) and rank_search < $this->iMaxRank";
1565                                     if (CONST_Debug) var_dump($sSQL);
1566                                     $aPlaceIDs = chksql($this->oDB->getCol($sSQL));
1567                                     $sPlaceIDs = join(',', $aPlaceIDs);
1568                                 }
1569
1570                                 if ($sPlaceIDs || $sPlaceGeom) {
1571                                     $fRange = 0.01;
1572                                     if ($bCacheTable) {
1573                                         // More efficient - can make the range bigger
1574                                         $fRange = 0.05;
1575
1576                                         $sOrderBySQL = '';
1577                                         if ($oNearPoint) {
1578                                             $sOrderBySQL = $oNearPoint->distanceSQL('l.centroid');
1579                                         } elseif ($sPlaceIDs) {
1580                                             $sOrderBySQL = "ST_Distance(l.centroid, f.geometry)";
1581                                         } elseif ($sPlaceGeom) {
1582                                             $sOrderBysSQL = "ST_Distance(st_centroid('".$sPlaceGeom."'), l.centroid)";
1583                                         }
1584
1585                                         $sSQL = "select distinct l.place_id".($sOrderBySQL?','.$sOrderBySQL:'')." from place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." as l";
1586                                         if ($sCountryCodesSQL) $sSQL .= " join placex as lp using (place_id)";
1587                                         if ($sPlaceIDs) {
1588                                             $sSQL .= ",placex as f where ";
1589                                             $sSQL .= "f.place_id in ($sPlaceIDs) and ST_DWithin(l.centroid, f.centroid, $fRange) ";
1590                                         }
1591                                         if ($sPlaceGeom) {
1592                                             $sSQL .= " where ";
1593                                             $sSQL .= "ST_Contains('".$sPlaceGeom."', l.centroid) ";
1594                                         }
1595                                         if (sizeof($this->aExcludePlaceIDs)) {
1596                                             $sSQL .= " and l.place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1597                                         }
1598                                         if ($sCountryCodesSQL) $sSQL .= " and lp.calculated_country_code in ($sCountryCodesSQL)";
1599                                         if ($sOrderBySQL) $sSQL .= "order by ".$sOrderBySQL." asc";
1600                                         if ($this->iOffset) $sSQL .= " offset $this->iOffset";
1601                                         $sSQL .= " limit $this->iLimit";
1602                                         if (CONST_Debug) var_dump($sSQL);
1603                                         $aClassPlaceIDs = array_merge($aClassPlaceIDs, chksql($this->oDB->getCol($sSQL)));
1604                                     } else {
1605                                         if ($aSearch['oNear']) {
1606                                             $fRange = $aSearch['oNear']->radius();
1607                                         }
1608
1609                                         $sOrderBySQL = '';
1610                                         if ($oNearPoint) {
1611                                             $sOrderBySQL = $oNearPoint->distanceSQL('l.geometry');
1612                                         } else {
1613                                             $sOrderBySQL = "ST_Distance(l.geometry, f.geometry)";
1614                                         }
1615
1616                                         $sSQL = "SELECT distinct l.place_id".($sOrderBysSQL?','.$sOrderBysSQL:'');
1617                                         $sSQL .= " FROM placex as l, placex as f ";
1618                                         $sSQL .= " WHERE f.place_id in ($sPlaceIDs) ";
1619                                         $sSQL .= "  AND ST_DWithin(l.geometry, f.centroid, $fRange) ";
1620                                         $sSQL .= "  AND l.class='".$aSearch['sClass']."' ";
1621                                         $sSQL .= "  AND l.type='".$aSearch['sType']."' ";
1622                                         if (sizeof($this->aExcludePlaceIDs)) {
1623                                             $sSQL .= " AND l.place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1624                                         }
1625                                         if ($sCountryCodesSQL) $sSQL .= " AND l.calculated_country_code in ($sCountryCodesSQL)";
1626                                         if ($sOrderBy) $sSQL .= "ORDER BY ".$OrderBysSQL." ASC";
1627                                         if ($this->iOffset) $sSQL .= " OFFSET $this->iOffset";
1628                                         $sSQL .= " limit $this->iLimit";
1629                                         if (CONST_Debug) var_dump($sSQL);
1630                                         $aClassPlaceIDs = array_merge($aClassPlaceIDs, chksql($this->oDB->getCol($sSQL)));
1631                                     }
1632                                 }
1633                             }
1634                             $aPlaceIDs = $aClassPlaceIDs;
1635                         }
1636                     }
1637
1638                     if (CONST_Debug) {
1639                         echo "<br><b>Place IDs:</b> ";
1640                         var_Dump($aPlaceIDs);
1641                     }
1642
1643                     foreach ($aPlaceIDs as $iPlaceID) {
1644                         // array for placeID => -1 | Tiger housenumber
1645                         $aResultPlaceIDs[$iPlaceID] = $searchedHousenumber;
1646                     }
1647                     if ($iQueryLoop > 20) break;
1648                 }
1649
1650                 if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs) && ($this->iMinAddressRank != 0 || $this->iMaxAddressRank != 30)) {
1651                     // Need to verify passes rank limits before dropping out of the loop (yuk!)
1652                     // reduces the number of place ids, like a filter
1653                     // rank_address is 30 for interpolated housenumbers
1654                     $sSQL = "SELECT place_id ";
1655                     $sSQL .= "FROM placex ";
1656                     $sSQL .= "WHERE place_id in (".join(',', array_keys($aResultPlaceIDs)).") ";
1657                     $sSQL .= "  AND (";
1658                     $sSQL .= "         placex.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
1659                     if (14 >= $this->iMinAddressRank && 14 <= $this->iMaxAddressRank) {
1660                         $sSQL .= "     OR (extratags->'place') = 'city'";
1661                     }
1662                     if ($this->aAddressRankList) {
1663                         $sSQL .= "     OR placex.rank_address in (".join(',', $this->aAddressRankList).")";
1664                     }
1665                     if (CONST_Use_US_Tiger_Data) {
1666                         $sSQL .= "  ) ";
1667                         $sSQL .= "UNION ";
1668                         $sSQL .= "  SELECT place_id ";
1669                         $sSQL .= "  FROM location_property_tiger ";
1670                         $sSQL .= "  WHERE place_id in (".join(',', array_keys($aResultPlaceIDs)).") ";
1671                         $sSQL .= "    AND (30 between $this->iMinAddressRank and $this->iMaxAddressRank ";
1672                         if ($this->aAddressRankList) $sSQL .= " OR 30 in (".join(',', $this->aAddressRankList).")";
1673                     }
1674                     $sSQL .= ") UNION ";
1675                     $sSQL .= "  SELECT place_id ";
1676                     $sSQL .= "  FROM location_property_osmline ";
1677                     $sSQL .= "  WHERE place_id in (".join(',', array_keys($aResultPlaceIDs)).")";
1678                     $sSQL .= "    AND startnumber is not NULL AND (30 between $this->iMinAddressRank and $this->iMaxAddressRank)";
1679                     if (CONST_Debug) var_dump($sSQL);
1680                     $aFilteredPlaceIDs = chksql($this->oDB->getCol($sSQL));
1681                     $tempIDs = array();
1682                     foreach ($aFilteredPlaceIDs as $placeID) {
1683                         $tempIDs[$placeID] = $aResultPlaceIDs[$placeID];  //assign housenumber to placeID
1684                     }
1685                     $aResultPlaceIDs = $tempIDs;
1686                 }
1687
1688                 //exit;
1689                 if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs)) break;
1690                 if ($iGroupLoop > 4) break;
1691                 if ($iQueryLoop > 30) break;
1692             }
1693
1694             // Did we find anything?
1695             if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs)) {
1696                 $aSearchResults = $this->getDetails($aResultPlaceIDs);
1697             }
1698         } else {
1699             // Just interpret as a reverse geocode
1700             $oReverse = new ReverseGeocode($this->oDB);
1701             $oReverse->setZoom(18);
1702
1703             $aLookup = $oReverse->lookup(
1704                 $oNearPoint->lat(),
1705                 $oNearPoint->lon(),
1706                 false
1707             );
1708
1709             if (CONST_Debug) var_dump("Reverse search", $aLookup);
1710
1711             if ($aLookup['place_id']) {
1712                 $aSearchResults = $this->getDetails(array($aLookup['place_id'] => -1));
1713                 $aResultPlaceIDs[$aLookup['place_id']] = -1;
1714             } else {
1715                 $aSearchResults = array();
1716             }
1717         }
1718
1719         // No results? Done
1720         if (!sizeof($aSearchResults)) {
1721             if ($this->bFallback) {
1722                 if ($this->fallbackStructuredQuery()) {
1723                     return $this->lookup();
1724                 }
1725             }
1726
1727             return array();
1728         }
1729
1730         $aClassType = getClassTypesWithImportance();
1731         $aRecheckWords = preg_split('/\b[\s,\\-]*/u', $sQuery);
1732         foreach ($aRecheckWords as $i => $sWord) {
1733             if (!preg_match('/[\pL\pN]/', $sWord)) unset($aRecheckWords[$i]);
1734         }
1735
1736         if (CONST_Debug) {
1737             echo '<i>Recheck words:<\i>';
1738             var_dump($aRecheckWords);
1739         }
1740
1741         $oPlaceLookup = new PlaceLookup($this->oDB);
1742         $oPlaceLookup->setIncludePolygonAsPoints($this->bIncludePolygonAsPoints);
1743         $oPlaceLookup->setIncludePolygonAsText($this->bIncludePolygonAsText);
1744         $oPlaceLookup->setIncludePolygonAsGeoJSON($this->bIncludePolygonAsGeoJSON);
1745         $oPlaceLookup->setIncludePolygonAsKML($this->bIncludePolygonAsKML);
1746         $oPlaceLookup->setIncludePolygonAsSVG($this->bIncludePolygonAsSVG);
1747         $oPlaceLookup->setPolygonSimplificationThreshold($this->fPolygonSimplificationThreshold);
1748
1749         foreach ($aSearchResults as $iResNum => $aResult) {
1750             // Default
1751             $fDiameter = getResultDiameter($aResult);
1752
1753             $aOutlineResult = $oPlaceLookup->getOutlines($aResult['place_id'], $aResult['lon'], $aResult['lat'], $fDiameter/2);
1754             if ($aOutlineResult) {
1755                 $aResult = array_merge($aResult, $aOutlineResult);
1756             }
1757
1758             if ($aResult['extra_place'] == 'city') {
1759                 $aResult['class'] = 'place';
1760                 $aResult['type'] = 'city';
1761                 $aResult['rank_search'] = 16;
1762             }
1763
1764             // Is there an icon set for this type of result?
1765             if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['icon'])
1766                 && $aClassType[$aResult['class'].':'.$aResult['type']]['icon']
1767             ) {
1768                 $aResult['icon'] = CONST_Website_BaseURL.'images/mapicons/'.$aClassType[$aResult['class'].':'.$aResult['type']]['icon'].'.p.20.png';
1769             }
1770
1771             if (isset($aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'])
1772                 && $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label']
1773             ) {
1774                 $aResult['label'] = $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'];
1775             } elseif (isset($aClassType[$aResult['class'].':'.$aResult['type']]['label'])
1776                 && $aClassType[$aResult['class'].':'.$aResult['type']]['label']
1777             ) {
1778                 $aResult['label'] = $aClassType[$aResult['class'].':'.$aResult['type']]['label'];
1779             }
1780             // if tag '&addressdetails=1' is set in query
1781             if ($this->bIncludeAddressDetails) {
1782                 // getAddressDetails() is defined in lib.php and uses the SQL function get_addressdata in functions.sql
1783                 $aResult['address'] = getAddressDetails($this->oDB, $sLanguagePrefArraySQL, $aResult['place_id'], $aResult['country_code'], $aResultPlaceIDs[$aResult['place_id']]);
1784                 if ($aResult['extra_place'] == 'city' && !isset($aResult['address']['city'])) {
1785                     $aResult['address'] = array_merge(array('city' => array_values($aResult['address'])[0]), $aResult['address']);
1786                 }
1787             }
1788
1789             if ($this->bIncludeExtraTags) {
1790                 if ($aResult['extra']) {
1791                     $aResult['sExtraTags'] = json_decode($aResult['extra']);
1792                 } else {
1793                     $aResult['sExtraTags'] = (object) array();
1794                 }
1795             }
1796
1797             if ($this->bIncludeNameDetails) {
1798                 if ($aResult['names']) {
1799                     $aResult['sNameDetails'] = json_decode($aResult['names']);
1800                 } else {
1801                     $aResult['sNameDetails'] = (object) array();
1802                 }
1803             }
1804
1805             // Adjust importance for the number of exact string matches in the result
1806             $aResult['importance'] = max(0.001, $aResult['importance']);
1807             $iCountWords = 0;
1808             $sAddress = $aResult['langaddress'];
1809             foreach ($aRecheckWords as $i => $sWord) {
1810                 if (stripos($sAddress, $sWord)!==false) {
1811                     $iCountWords++;
1812                     if (preg_match("/(^|,)\s*".preg_quote($sWord, '/')."\s*(,|$)/", $sAddress)) $iCountWords += 0.1;
1813                 }
1814             }
1815
1816             $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
1817
1818             $aResult['name'] = $aResult['langaddress'];
1819             // secondary ordering (for results with same importance (the smaller the better):
1820             // - approximate importance of address parts
1821             $aResult['foundorder'] = -$aResult['addressimportance']/10;
1822             // - number of exact matches from the query
1823             if (isset($this->exactMatchCache[$aResult['place_id']])) {
1824                 $aResult['foundorder'] -= $this->exactMatchCache[$aResult['place_id']];
1825             } elseif (isset($this->exactMatchCache[$aResult['parent_place_id']])) {
1826                 $aResult['foundorder'] -= $this->exactMatchCache[$aResult['parent_place_id']];
1827             }
1828             // - importance of the class/type
1829             if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['importance'])
1830                 && $aClassType[$aResult['class'].':'.$aResult['type']]['importance']
1831             ) {
1832                 $aResult['foundorder'] += 0.0001 * $aClassType[$aResult['class'].':'.$aResult['type']]['importance'];
1833             } else {
1834                 $aResult['foundorder'] += 0.01;
1835             }
1836             if (CONST_Debug) var_dump($aResult);
1837             $aSearchResults[$iResNum] = $aResult;
1838         }
1839         uasort($aSearchResults, 'byImportance');
1840
1841         $aOSMIDDone = array();
1842         $aClassTypeNameDone = array();
1843         $aToFilter = $aSearchResults;
1844         $aSearchResults = array();
1845
1846         $bFirst = true;
1847         foreach ($aToFilter as $iResNum => $aResult) {
1848             $this->aExcludePlaceIDs[$aResult['place_id']] = $aResult['place_id'];
1849             if ($bFirst) {
1850                 $fLat = $aResult['lat'];
1851                 $fLon = $aResult['lon'];
1852                 if (isset($aResult['zoom'])) $iZoom = $aResult['zoom'];
1853                 $bFirst = false;
1854             }
1855             if (!$this->bDeDupe || (!isset($aOSMIDDone[$aResult['osm_type'].$aResult['osm_id']])
1856                 && !isset($aClassTypeNameDone[$aResult['osm_type'].$aResult['class'].$aResult['type'].$aResult['name'].$aResult['admin_level']]))
1857             ) {
1858                 $aOSMIDDone[$aResult['osm_type'].$aResult['osm_id']] = true;
1859                 $aClassTypeNameDone[$aResult['osm_type'].$aResult['class'].$aResult['type'].$aResult['name'].$aResult['admin_level']] = true;
1860                 $aSearchResults[] = $aResult;
1861             }
1862
1863             // Absolute limit on number of results
1864             if (sizeof($aSearchResults) >= $this->iFinalLimit) break;
1865         }
1866
1867         return $aSearchResults;
1868     } // end lookup()
1869 } // end class