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     protected $oNormalizer = null;
  55
  56
  57     public function __construct(&$oDB)
  58     {
  59         $this->oDB =& $oDB;
  60         $this->oNormalizer = \Transliterator::createFromRules(CONST_Term_Normalization_Rules);
  61     }
  62
  63     private function normTerm($sTerm)
  64     {
  65         if ($this->oNormalizer === null) {
  66             return $sTerm;
  67         }
  68
  69         return $this->oNormalizer->transliterate($sTerm);
  70     }
  71
  72     public function setReverseInPlan($bReverse)
  73     {
  74         $this->bReverseInPlan = $bReverse;
  75     }
  76
  77     public function setLanguagePreference($aLangPref)
  78     {
  79         $this->aLangPrefOrder = $aLangPref;
  80     }
  81
  82     public function getMoreUrlParams()
  83     {
  84         if ($this->aStructuredQuery) {
  85             $aParams = $this->aStructuredQuery;
  86         } else {
  87             $aParams = array('q' => $this->sQuery);
  88         }
  89
  90         if ($this->aExcludePlaceIDs) {
  91             $aParams['exclude_place_ids'] = implode(',', $this->aExcludePlaceIDs);
  92         }
  93
  94         if ($this->bIncludeAddressDetails) $aParams['addressdetails'] = '1';
  95         if ($this->bIncludeExtraTags) $aParams['extratags'] = '1';
  96         if ($this->bIncludeNameDetails) $aParams['namedetails'] = '1';
  97
  98         if ($this->bIncludePolygonAsPoints) $aParams['polygon'] = '1';
  99         if ($this->bIncludePolygonAsText) $aParams['polygon_text'] = '1';
 100         if ($this->bIncludePolygonAsGeoJSON) $aParams['polygon_geojson'] = '1';
 101         if ($this->bIncludePolygonAsKML) $aParams['polygon_kml'] = '1';
 102         if ($this->bIncludePolygonAsSVG) $aParams['polygon_svg'] = '1';
 103
 104         if ($this->fPolygonSimplificationThreshold > 0.0) {
 105             $aParams['polygon_threshold'] = $this->fPolygonSimplificationThreshold;
 106         }
 107
 108         if ($this->bBoundedSearch) $aParams['bounded'] = '1';
 109         if (!$this->bDeDupe) $aParams['dedupe'] = '0';
 110
 111         if ($this->aCountryCodes) {
 112             $aParams['countrycodes'] = implode(',', $this->aCountryCodes);
 113         }
 114
 115         if ($this->aViewBox) {
 116             $aParams['viewbox'] = $this->aViewBox[0].','.$this->aViewBox[3]
 117                                   .','.$this->aViewBox[2].','.$this->aViewBox[1];
 118         }
 119
 120         return $aParams;
 121     }
 122
 123     public function setIncludePolygonAsPoints($b = true)
 124     {
 125         $this->bIncludePolygonAsPoints = $b;
 126     }
 127
 128     public function setIncludePolygonAsText($b = true)
 129     {
 130         $this->bIncludePolygonAsText = $b;
 131     }
 132
 133     public function setIncludePolygonAsGeoJSON($b = true)
 134     {
 135         $this->bIncludePolygonAsGeoJSON = $b;
 136     }
 137
 138     public function setIncludePolygonAsKML($b = true)
 139     {
 140         $this->bIncludePolygonAsKML = $b;
 141     }
 142
 143     public function setIncludePolygonAsSVG($b = true)
 144     {
 145         $this->bIncludePolygonAsSVG = $b;
 146     }
 147
 148     public function setPolygonSimplificationThreshold($f)
 149     {
 150         $this->fPolygonSimplificationThreshold = $f;
 151     }
 152
 153     public function setLimit($iLimit = 10)
 154     {
 155         if ($iLimit > 50) $iLimit = 50;
 156         if ($iLimit < 1) $iLimit = 1;
 157
 158         $this->iFinalLimit = $iLimit;
 159         $this->iLimit = $iLimit + min($iLimit, 10);
 160     }
 161
 162     public function setFeatureType($sFeatureType)
 163     {
 164         switch ($sFeatureType) {
 165             case 'country':
 166                 $this->setRankRange(4, 4);
 167                 break;
 168             case 'state':
 169                 $this->setRankRange(8, 8);
 170                 break;
 171             case 'city':
 172                 $this->setRankRange(14, 16);
 173                 break;
 174             case 'settlement':
 175                 $this->setRankRange(8, 20);
 176                 break;
 177         }
 178     }
 179
 180     public function setRankRange($iMin, $iMax)
 181     {
 182         $this->iMinAddressRank = $iMin;
 183         $this->iMaxAddressRank = $iMax;
 184     }
 185
 186     public function setRoute($aRoutePoints, $fRouteWidth)
 187     {
 188         $this->aViewBox = false;
 189
 190         $this->sViewboxCentreSQL = "ST_SetSRID('LINESTRING(";
 191         $sSep = '';
 192         foreach ($aRoutePoints as $aPoint) {
 193             $fPoint = (float)$aPoint;
 194             $this->sViewboxCentreSQL .= $sSep.$fPoint;
 195             $sSep = ($sSep == ' ') ? ',' : ' ';
 196         }
 197         $this->sViewboxCentreSQL .= ")'::geometry,4326)";
 198
 199         $this->sViewboxSmallSQL = 'ST_BUFFER('.$this->sViewboxCentreSQL;
 200         $this->sViewboxSmallSQL .= ','.($fRouteWidth/69).')';
 201
 202         $this->sViewboxLargeSQL = 'ST_BUFFER('.$this->sViewboxCentreSQL;
 203         $this->sViewboxLargeSQL .= ','.($fRouteWidth/30).')';
 204     }
 205
 206     public function setViewbox($aViewbox)
 207     {
 208         $this->aViewBox = array_map('floatval', $aViewbox);
 209
 210         $this->aViewBox[0] = max(-180.0, min(180, $this->aViewBox[0]));
 211         $this->aViewBox[1] = max(-90.0, min(90, $this->aViewBox[1]));
 212         $this->aViewBox[2] = max(-180.0, min(180, $this->aViewBox[2]));
 213         $this->aViewBox[3] = max(-90.0, min(90, $this->aViewBox[3]));
 214
 215         if (abs($this->aViewBox[0] - $this->aViewBox[2]) < 0.000000001
 216             || abs($this->aViewBox[1] - $this->aViewBox[3]) < 0.000000001
 217         ) {
 218             userError("Bad parameter 'viewbox'. Not a box.");
 219         }
 220
 221         $fHeight = $this->aViewBox[0] - $this->aViewBox[2];
 222         $fWidth = $this->aViewBox[1] - $this->aViewBox[3];
 223         $aBigViewBox[0] = $this->aViewBox[0] + $fHeight;
 224         $aBigViewBox[2] = $this->aViewBox[2] - $fHeight;
 225         $aBigViewBox[1] = $this->aViewBox[1] + $fWidth;
 226         $aBigViewBox[3] = $this->aViewBox[3] - $fWidth;
 227
 228         $this->sViewboxCentreSQL = false;
 229         $this->sViewboxSmallSQL = sprintf(
 230             'ST_SetSRID(ST_MakeBox2D(ST_Point(%F,%F),ST_Point(%F,%F)),4326)',
 231             $this->aViewBox[0],
 232             $this->aViewBox[1],
 233             $this->aViewBox[2],
 234             $this->aViewBox[3]
 235         );
 236         $this->sViewboxLargeSQL = sprintf(
 237             'ST_SetSRID(ST_MakeBox2D(ST_Point(%F,%F),ST_Point(%F,%F)),4326)',
 238             $aBigViewBox[0],
 239             $aBigViewBox[1],
 240             $aBigViewBox[2],
 241             $aBigViewBox[3]
 242         );
 243     }
 244
 245     public function setQuery($sQueryString)
 246     {
 247         $this->sQuery = $sQueryString;
 248         $this->aStructuredQuery = false;
 249     }
 250
 251     public function getQueryString()
 252     {
 253         return $this->sQuery;
 254     }
 255
 256
 257     public function loadParamArray($oParams)
 258     {
 259         $this->bIncludeAddressDetails
 260          = $oParams->getBool('addressdetails', $this->bIncludeAddressDetails);
 261         $this->bIncludeExtraTags
 262          = $oParams->getBool('extratags', $this->bIncludeExtraTags);
 263         $this->bIncludeNameDetails
 264          = $oParams->getBool('namedetails', $this->bIncludeNameDetails);
 265
 266         $this->bBoundedSearch = $oParams->getBool('bounded', $this->bBoundedSearch);
 267         $this->bDeDupe = $oParams->getBool('dedupe', $this->bDeDupe);
 268
 269         $this->setLimit($oParams->getInt('limit', $this->iFinalLimit));
 270         $this->iOffset = $oParams->getInt('offset', $this->iOffset);
 271
 272         $this->bFallback = $oParams->getBool('fallback', $this->bFallback);
 273
 274         // List of excluded Place IDs - used for more acurate pageing
 275         $sExcluded = $oParams->getStringList('exclude_place_ids');
 276         if ($sExcluded) {
 277             foreach ($sExcluded as $iExcludedPlaceID) {
 278                 $iExcludedPlaceID = (int)$iExcludedPlaceID;
 279                 if ($iExcludedPlaceID)
 280                     $aExcludePlaceIDs[$iExcludedPlaceID] = $iExcludedPlaceID;
 281             }
 282
 283             if (isset($aExcludePlaceIDs))
 284                 $this->aExcludePlaceIDs = $aExcludePlaceIDs;
 285         }
 286
 287         // Only certain ranks of feature
 288         $sFeatureType = $oParams->getString('featureType');
 289         if (!$sFeatureType) $sFeatureType = $oParams->getString('featuretype');
 290         if ($sFeatureType) $this->setFeatureType($sFeatureType);
 291
 292         // Country code list
 293         $sCountries = $oParams->getStringList('countrycodes');
 294         if ($sCountries) {
 295             foreach ($sCountries as $sCountryCode) {
 296                 if (preg_match('/^[a-zA-Z][a-zA-Z]$/', $sCountryCode)) {
 297                     $aCountries[] = strtolower($sCountryCode);
 298                 }
 299             }
 300             if (isset($aCountries))
 301                 $this->aCountryCodes = $aCountries;
 302         }
 303
 304         $aViewbox = $oParams->getStringList('viewboxlbrt');
 305         if ($aViewbox) {
 306             if (count($aViewbox) != 4) {
 307                 userError("Bad parmater 'viewboxlbrt'. Expected 4 coordinates.");
 308             }
 309             $this->setViewbox($aViewbox);
 310         } else {
 311             $aViewbox = $oParams->getStringList('viewbox');
 312             if ($aViewbox) {
 313                 if (count($aViewbox) != 4) {
 314                     userError("Bad parmater 'viewbox'. Expected 4 coordinates.");
 315                 }
 316                 $this->setViewBox($aViewbox);
 317             } else {
 318                 $aRoute = $oParams->getStringList('route');
 319                 $fRouteWidth = $oParams->getFloat('routewidth');
 320                 if ($aRoute && $fRouteWidth) {
 321                     $this->setRoute($aRoute, $fRouteWidth);
 322                 }
 323             }
 324         }
 325     }
 326
 327     public function setQueryFromParams($oParams)
 328     {
 329         // Search query
 330         $sQuery = $oParams->getString('q');
 331         if (!$sQuery) {
 332             $this->setStructuredQuery(
 333                 $oParams->getString('amenity'),
 334                 $oParams->getString('street'),
 335                 $oParams->getString('city'),
 336                 $oParams->getString('county'),
 337                 $oParams->getString('state'),
 338                 $oParams->getString('country'),
 339                 $oParams->getString('postalcode')
 340             );
 341             $this->setReverseInPlan(false);
 342         } else {
 343             $this->setQuery($sQuery);
 344         }
 345     }
 346
 347     public function loadStructuredAddressElement($sValue, $sKey, $iNewMinAddressRank, $iNewMaxAddressRank, $aItemListValues)
 348     {
 349         $sValue = trim($sValue);
 350         if (!$sValue) return false;
 351         $this->aStructuredQuery[$sKey] = $sValue;
 352         if ($this->iMinAddressRank == 0 && $this->iMaxAddressRank == 30) {
 353             $this->iMinAddressRank = $iNewMinAddressRank;
 354             $this->iMaxAddressRank = $iNewMaxAddressRank;
 355         }
 356         if ($aItemListValues) $this->aAddressRankList = array_merge($this->aAddressRankList, $aItemListValues);
 357         return true;
 358     }
 359
 360     public function setStructuredQuery($sAmenity = false, $sStreet = false, $sCity = false, $sCounty = false, $sState = false, $sCountry = false, $sPostalCode = false)
 361     {
 362         $this->sQuery = false;
 363
 364         // Reset
 365         $this->iMinAddressRank = 0;
 366         $this->iMaxAddressRank = 30;
 367         $this->aAddressRankList = array();
 368
 369         $this->aStructuredQuery = array();
 370         $this->sAllowedTypesSQLList = False;
 371
 372         $this->loadStructuredAddressElement($sAmenity, 'amenity', 26, 30, false);
 373         $this->loadStructuredAddressElement($sStreet, 'street', 26, 30, false);
 374         $this->loadStructuredAddressElement($sCity, 'city', 14, 24, false);
 375         $this->loadStructuredAddressElement($sCounty, 'county', 9, 13, false);
 376         $this->loadStructuredAddressElement($sState, 'state', 8, 8, false);
 377         $this->loadStructuredAddressElement($sPostalCode, 'postalcode', 5, 11, array(5, 11));
 378         $this->loadStructuredAddressElement($sCountry, 'country', 4, 4, false);
 379
 380         if (sizeof($this->aStructuredQuery) > 0) {
 381             $this->sQuery = join(', ', $this->aStructuredQuery);
 382             if ($this->iMaxAddressRank < 30) {
 383                 $this->sAllowedTypesSQLList = '(\'place\',\'boundary\')';
 384             }
 385         }
 386     }
 387
 388     public function fallbackStructuredQuery()
 389     {
 390         if (!$this->aStructuredQuery) return false;
 391
 392         $aParams = $this->aStructuredQuery;
 393
 394         if (sizeof($aParams) == 1) return false;
 395
 396         $aOrderToFallback = array('postalcode', 'street', 'city', 'county', 'state');
 397
 398         foreach ($aOrderToFallback as $sType) {
 399             if (isset($aParams[$sType])) {
 400                 unset($aParams[$sType]);
 401                 $this->setStructuredQuery(@$aParams['amenity'], @$aParams['street'], @$aParams['city'], @$aParams['county'], @$aParams['state'], @$aParams['country'], @$aParams['postalcode']);
 402                 return true;
 403             }
 404         }
 405
 406         return false;
 407     }
 408
 409     public function getDetails($aPlaceIDs)
 410     {
 411         //$aPlaceIDs is an array with key: placeID and value: tiger-housenumber, if found, else -1
 412         if (sizeof($aPlaceIDs) == 0) return array();
 413
 414         $sLanguagePrefArraySQL = "ARRAY[".join(',', array_map("getDBQuoted", $this->aLangPrefOrder))."]";
 415
 416         // Get the details for display (is this a redundant extra step?)
 417         $sPlaceIDs = join(',', array_keys($aPlaceIDs));
 418
 419         $sImportanceSQL = '';
 420         $sImportanceSQLGeom = '';
 421         if ($this->sViewboxSmallSQL) {
 422             $sImportanceSQL .= " CASE WHEN ST_Contains($this->sViewboxSmallSQL, ST_Collect(centroid)) THEN 1 ELSE 0.75 END * ";
 423             $sImportanceSQLGeom .= " CASE WHEN ST_Contains($this->sViewboxSmallSQL, geometry) THEN 1 ELSE 0.75 END * ";
 424         }
 425         if ($this->sViewboxLargeSQL) {
 426             $sImportanceSQL .= " CASE WHEN ST_Contains($this->sViewboxLargeSQL, ST_Collect(centroid)) THEN 1 ELSE 0.75 END * ";
 427             $sImportanceSQLGeom .= " CASE WHEN ST_Contains($this->sViewboxLargeSQL, geometry) THEN 1 ELSE 0.75 END * ";
 428         }
 429
 430         $sSQL  = "SELECT ";
 431         $sSQL .= "    osm_type,";
 432         $sSQL .= "    osm_id,";
 433         $sSQL .= "    class,";
 434         $sSQL .= "    type,";
 435         $sSQL .= "    admin_level,";
 436         $sSQL .= "    rank_search,";
 437         $sSQL .= "    rank_address,";
 438         $sSQL .= "    min(place_id) AS place_id, ";
 439         $sSQL .= "    min(parent_place_id) AS parent_place_id, ";
 440         $sSQL .= "    country_code, ";
 441         $sSQL .= "    get_address_by_language(place_id, -1, $sLanguagePrefArraySQL) AS langaddress,";
 442         $sSQL .= "    get_name_by_language(name, $sLanguagePrefArraySQL) AS placename,";
 443         $sSQL .= "    get_name_by_language(name, ARRAY['ref']) AS ref,";
 444         if ($this->bIncludeExtraTags) $sSQL .= "hstore_to_json(extratags)::text AS extra,";
 445         if ($this->bIncludeNameDetails) $sSQL .= "hstore_to_json(name)::text AS names,";
 446         $sSQL .= "    avg(ST_X(centroid)) AS lon, ";
 447         $sSQL .= "    avg(ST_Y(centroid)) AS lat, ";
 448         $sSQL .= "    ".$sImportanceSQL."COALESCE(importance,0.75-(rank_search::float/40)) AS importance, ";
 449         $sSQL .= "    ( ";
 450         $sSQL .= "       SELECT max(p.importance*(p.rank_address+2))";
 451         $sSQL .= "       FROM ";
 452         $sSQL .= "         place_addressline s, ";
 453         $sSQL .= "         placex p";
 454         $sSQL .= "       WHERE s.place_id = min(CASE WHEN placex.rank_search < 28 THEN placex.place_id ELSE placex.parent_place_id END)";
 455         $sSQL .= "         AND p.place_id = s.address_place_id ";
 456         $sSQL .= "         AND s.isaddress ";
 457         $sSQL .= "         AND p.importance is not null ";
 458         $sSQL .= "    ) AS addressimportance, ";
 459         $sSQL .= "    (extratags->'place') AS extra_place ";
 460         $sSQL .= " FROM placex";
 461         $sSQL .= " WHERE place_id in ($sPlaceIDs) ";
 462         $sSQL .= "   AND (";
 463         $sSQL .= "            placex.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
 464         if (14 >= $this->iMinAddressRank && 14 <= $this->iMaxAddressRank) {
 465             $sSQL .= "        OR (extratags->'place') = 'city'";
 466         }
 467         if ($this->aAddressRankList) {
 468             $sSQL .= "        OR placex.rank_address in (".join(',', $this->aAddressRankList).")";
 469         }
 470         $sSQL .= "       ) ";
 471         if ($this->sAllowedTypesSQLList) {
 472             $sSQL .= "AND placex.class in $this->sAllowedTypesSQLList ";
 473         }
 474         $sSQL .= "    AND linked_place_id is null ";
 475         $sSQL .= " GROUP BY ";
 476         $sSQL .= "     osm_type, ";
 477         $sSQL .= "     osm_id, ";
 478         $sSQL .= "     class, ";
 479         $sSQL .= "     type, ";
 480         $sSQL .= "     admin_level, ";
 481         $sSQL .= "     rank_search, ";
 482         $sSQL .= "     rank_address, ";
 483         $sSQL .= "     country_code, ";
 484         $sSQL .= "     importance, ";
 485         if (!$this->bDeDupe) $sSQL .= "place_id,";
 486         $sSQL .= "     langaddress, ";
 487         $sSQL .= "     placename, ";
 488         $sSQL .= "     ref, ";
 489         if ($this->bIncludeExtraTags) $sSQL .= "extratags, ";
 490         if ($this->bIncludeNameDetails) $sSQL .= "name, ";
 491         $sSQL .= "     extratags->'place' ";
 492
 493         // postcode table
 494         $sSQL .= "UNION ";
 495         $sSQL .= "SELECT";
 496         $sSQL .= "  'P' as osm_type,";
 497         $sSQL .= "  (SELECT osm_id from placex p WHERE p.place_id = lp.parent_place_id) as osm_id,";
 498         $sSQL .= "  'place' as class, 'postcode' as type,";
 499         $sSQL .= "  null as admin_level, rank_search, rank_address,";
 500         $sSQL .= "  place_id, parent_place_id, country_code,";
 501         $sSQL .= "  get_address_by_language(place_id, -1, $sLanguagePrefArraySQL) AS langaddress,";
 502         $sSQL .= "  postcode as placename,";
 503         $sSQL .= "  postcode as ref,";
 504         if ($this->bIncludeExtraTags) $sSQL .= "null AS extra,";
 505         if ($this->bIncludeNameDetails) $sSQL .= "null AS names,";
 506         $sSQL .= "  ST_x(st_centroid(geometry)) AS lon, ST_y(st_centroid(geometry)) AS lat,";
 507         $sSQL .=    $sImportanceSQLGeom."(0.75-(rank_search::float/40)) AS importance, ";
 508         $sSQL .= "  (";
 509         $sSQL .= "     SELECT max(p.importance*(p.rank_address+2))";
 510         $sSQL .= "     FROM ";
 511         $sSQL .= "       place_addressline s, ";
 512         $sSQL .= "       placex p";
 513         $sSQL .= "     WHERE s.place_id = lp.parent_place_id";
 514         $sSQL .= "       AND p.place_id = s.address_place_id ";
 515         $sSQL .= "       AND s.isaddress";
 516         $sSQL .= "       AND p.importance is not null";
 517         $sSQL .= "  ) AS addressimportance, ";
 518         $sSQL .= "  null AS extra_place ";
 519         $sSQL .= "FROM location_postcode lp";
 520         $sSQL .= " WHERE place_id in ($sPlaceIDs) ";
 521
 522         if (30 >= $this->iMinAddressRank && 30 <= $this->iMaxAddressRank) {
 523             // only Tiger housenumbers and interpolation lines need to be interpolated, because they are saved as lines
 524             // with start- and endnumber, the common osm housenumbers are usually saved as points
 525             $sHousenumbers = "";
 526             $i = 0;
 527             $length = count($aPlaceIDs);
 528             foreach ($aPlaceIDs as $placeID => $housenumber) {
 529                 $i++;
 530                 $sHousenumbers .= "(".$placeID.", ".$housenumber.")";
 531                 if ($i<$length) $sHousenumbers .= ", ";
 532             }
 533
 534             if (CONST_Use_US_Tiger_Data) {
 535                 // Tiger search only if a housenumber was searched and if it was found (i.e. aPlaceIDs[placeID] = housenumber != -1) (realized through a join)
 536                 $sSQL .= " union";
 537                 $sSQL .= " SELECT ";
 538                 $sSQL .= "     'T' AS osm_type, ";
 539                 $sSQL .= "     (SELECT osm_id from placex p WHERE p.place_id=min(blub.parent_place_id)) as osm_id, ";
 540                 $sSQL .= "     'place' AS class, ";
 541                 $sSQL .= "     'house' AS type, ";
 542                 $sSQL .= "     null AS admin_level, ";
 543                 $sSQL .= "     30 AS rank_search, ";
 544                 $sSQL .= "     30 AS rank_address, ";
 545                 $sSQL .= "     min(place_id) AS place_id, ";
 546                 $sSQL .= "     min(parent_place_id) AS parent_place_id, ";
 547                 $sSQL .= "     'us' AS country_code, ";
 548                 $sSQL .= "     get_address_by_language(place_id, housenumber_for_place, $sLanguagePrefArraySQL) AS langaddress,";
 549                 $sSQL .= "     null AS placename, ";
 550                 $sSQL .= "     null AS ref, ";
 551                 if ($this->bIncludeExtraTags) $sSQL .= "null AS extra,";
 552                 if ($this->bIncludeNameDetails) $sSQL .= "null AS names,";
 553                 $sSQL .= "     avg(st_x(centroid)) AS lon, ";
 554                 $sSQL .= "     avg(st_y(centroid)) AS lat,";
 555                 $sSQL .= "     ".$sImportanceSQL."-1.15 AS importance, ";
 556                 $sSQL .= "     (";
 557                 $sSQL .= "        SELECT max(p.importance*(p.rank_address+2))";
 558                 $sSQL .= "        FROM ";
 559                 $sSQL .= "          place_addressline s, ";
 560                 $sSQL .= "          placex p";
 561                 $sSQL .= "        WHERE s.place_id = min(blub.parent_place_id)";
 562                 $sSQL .= "          AND p.place_id = s.address_place_id ";
 563                 $sSQL .= "          AND s.isaddress";
 564                 $sSQL .= "          AND p.importance is not null";
 565                 $sSQL .= "     ) AS addressimportance, ";
 566                 $sSQL .= "     null AS extra_place ";
 567                 $sSQL .= " FROM (";
 568                 $sSQL .= "     SELECT place_id, ";    // interpolate the Tiger housenumbers here
 569                 $sSQL .= "         ST_LineInterpolatePoint(linegeo, (housenumber_for_place-startnumber::float)/(endnumber-startnumber)::float) AS centroid, ";
 570                 $sSQL .= "         parent_place_id, ";
 571                 $sSQL .= "         housenumber_for_place";
 572                 $sSQL .= "     FROM (";
 573                 $sSQL .= "            location_property_tiger ";
 574                 $sSQL .= "            JOIN (values ".$sHousenumbers.") AS housenumbers(place_id, housenumber_for_place) USING(place_id)) ";
 575                 $sSQL .= "     WHERE ";
 576                 $sSQL .= "         housenumber_for_place>=0";
 577                 $sSQL .= "         AND 30 between $this->iMinAddressRank AND $this->iMaxAddressRank";
 578                 $sSQL .= " ) AS blub"; //postgres wants an alias here
 579                 $sSQL .= " GROUP BY";
 580                 $sSQL .= "      place_id, ";
 581                 $sSQL .= "      housenumber_for_place"; //is this group by really needed?, place_id + housenumber (in combination) are unique
 582                 if (!$this->bDeDupe) $sSQL .= ", place_id ";
 583             }
 584             // osmline
 585             // interpolation line search only if a housenumber was searched and if it was found (i.e. aPlaceIDs[placeID] = housenumber != -1) (realized through a join)
 586             $sSQL .= " UNION ";
 587             $sSQL .= "SELECT ";
 588             $sSQL .= "  'W' AS osm_type, ";
 589             $sSQL .= "  osm_id, ";
 590             $sSQL .= "  'place' AS class, ";
 591             $sSQL .= "  'house' AS type, ";
 592             $sSQL .= "  null AS admin_level, ";
 593             $sSQL .= "  30 AS rank_search, ";
 594             $sSQL .= "  30 AS rank_address, ";
 595             $sSQL .= "  min(place_id) as place_id, ";
 596             $sSQL .= "  min(parent_place_id) AS parent_place_id, ";
 597             $sSQL .= "  country_code, ";
 598             $sSQL .= "  get_address_by_language(place_id, housenumber_for_place, $sLanguagePrefArraySQL) AS langaddress, ";
 599             $sSQL .= "  null AS placename, ";
 600             $sSQL .= "  null AS ref, ";
 601             if ($this->bIncludeExtraTags) $sSQL .= "null AS extra, ";
 602             if ($this->bIncludeNameDetails) $sSQL .= "null AS names, ";
 603             $sSQL .= "  AVG(st_x(centroid)) AS lon, ";
 604             $sSQL .= "  AVG(st_y(centroid)) AS lat, ";
 605             $sSQL .= "  ".$sImportanceSQL."-0.1 AS importance, ";  // slightly smaller than the importance for normal houses with rank 30, which is 0
 606             $sSQL .= "  (";
 607             $sSQL .= "     SELECT ";
 608             $sSQL .= "       MAX(p.importance*(p.rank_address+2)) ";
 609             $sSQL .= "     FROM";
 610             $sSQL .= "       place_addressline s, ";
 611             $sSQL .= "       placex p";
 612             $sSQL .= "     WHERE s.place_id = min(blub.parent_place_id) ";
 613             $sSQL .= "       AND p.place_id = s.address_place_id ";
 614             $sSQL .= "       AND s.isaddress ";
 615             $sSQL .= "       AND p.importance is not null";
 616             $sSQL .= "  ) AS addressimportance,";
 617             $sSQL .= "  null AS extra_place ";
 618             $sSQL .= "  FROM (";
 619             $sSQL .= "     SELECT ";
 620             $sSQL .= "         osm_id, ";
 621             $sSQL .= "         place_id, ";
 622             $sSQL .= "         country_code, ";
 623             $sSQL .= "         CASE ";             // interpolate the housenumbers here
 624             $sSQL .= "           WHEN startnumber != endnumber ";
 625             $sSQL .= "           THEN ST_LineInterpolatePoint(linegeo, (housenumber_for_place-startnumber::float)/(endnumber-startnumber)::float) ";
 626             $sSQL .= "           ELSE ST_LineInterpolatePoint(linegeo, 0.5) ";
 627             $sSQL .= "         END as centroid, ";
 628             $sSQL .= "         parent_place_id, ";
 629             $sSQL .= "         housenumber_for_place ";
 630             $sSQL .= "     FROM (";
 631             $sSQL .= "            location_property_osmline ";
 632             $sSQL .= "            JOIN (values ".$sHousenumbers.") AS housenumbers(place_id, housenumber_for_place) USING(place_id)";
 633             $sSQL .= "          ) ";
 634             $sSQL .= "     WHERE housenumber_for_place>=0 ";
 635             $sSQL .= "       AND 30 between $this->iMinAddressRank AND $this->iMaxAddressRank";
 636             $sSQL .= "  ) as blub"; //postgres wants an alias here
 637             $sSQL .= "  GROUP BY ";
 638             $sSQL .= "    osm_id, ";
 639             $sSQL .= "    place_id, ";
 640             $sSQL .= "    housenumber_for_place, ";
 641             $sSQL .= "    country_code "; //is this group by really needed?, place_id + housenumber (in combination) are unique
 642             if (!$this->bDeDupe) $sSQL .= ", place_id ";
 643
 644             if (CONST_Use_Aux_Location_data) {
 645                 $sSQL .= " UNION ";
 646                 $sSQL .= "  SELECT ";
 647                 $sSQL .= "     'L' AS osm_type, ";
 648                 $sSQL .= "     place_id AS osm_id, ";
 649                 $sSQL .= "     'place' AS class,";
 650                 $sSQL .= "     'house' AS type, ";
 651                 $sSQL .= "     null AS admin_level, ";
 652                 $sSQL .= "     0 AS rank_search,";
 653                 $sSQL .= "     0 AS rank_address, ";
 654                 $sSQL .= "     min(place_id) AS place_id,";
 655                 $sSQL .= "     min(parent_place_id) AS parent_place_id, ";
 656                 $sSQL .= "     'us' AS country_code, ";
 657                 $sSQL .= "     get_address_by_language(place_id, -1, $sLanguagePrefArraySQL) AS langaddress, ";
 658                 $sSQL .= "     null AS placename, ";
 659                 $sSQL .= "     null AS ref, ";
 660                 if ($this->bIncludeExtraTags) $sSQL .= "null AS extra, ";
 661                 if ($this->bIncludeNameDetails) $sSQL .= "null AS names, ";
 662                 $sSQL .= "     avg(ST_X(centroid)) AS lon, ";
 663                 $sSQL .= "     avg(ST_Y(centroid)) AS lat, ";
 664                 $sSQL .= "     ".$sImportanceSQL."-1.10 AS importance, ";
 665                 $sSQL .= "     ( ";
 666                 $sSQL .= "       SELECT max(p.importance*(p.rank_address+2))";
 667                 $sSQL .= "       FROM ";
 668                 $sSQL .= "          place_addressline s, ";
 669                 $sSQL .= "          placex p";
 670                 $sSQL .= "       WHERE s.place_id = min(location_property_aux.parent_place_id)";
 671                 $sSQL .= "         AND p.place_id = s.address_place_id ";
 672                 $sSQL .= "         AND s.isaddress";
 673                 $sSQL .= "         AND p.importance is not null";
 674                 $sSQL .= "     ) AS addressimportance, ";
 675                 $sSQL .= "     null AS extra_place ";
 676                 $sSQL .= "  FROM location_property_aux ";
 677                 $sSQL .= "  WHERE place_id in ($sPlaceIDs) ";
 678                 $sSQL .= "    AND 30 between $this->iMinAddressRank and $this->iMaxAddressRank ";
 679                 $sSQL .= "  GROUP BY ";
 680                 $sSQL .= "     place_id, ";
 681                 if (!$this->bDeDupe) $sSQL .= "place_id, ";
 682                 $sSQL .= "     get_address_by_language(place_id, -1, $sLanguagePrefArraySQL) ";
 683             }
 684         }
 685
 686         $sSQL .= " order by importance desc";
 687         if (CONST_Debug) {
 688             echo "<hr>";
 689             var_dump($sSQL);
 690         }
 691         $aSearchResults = chksql(
 692             $this->oDB->getAll($sSQL),
 693             "Could not get details for place."
 694         );
 695
 696         return $aSearchResults;
 697     }
 698
 699     public function getGroupedSearches($aSearches, $aPhraseTypes, $aPhrases, $aValidTokens, $aWordFrequencyScores, $bStructuredPhrases, $sNormQuery)
 700     {
 701         /*
 702              Calculate all searches using aValidTokens i.e.
 703              'Wodsworth Road, Sheffield' =>
 704
 705              Phrase Wordset
 706              0      0       (wodsworth road)
 707              0      1       (wodsworth)(road)
 708              1      0       (sheffield)
 709
 710              Score how good the search is so they can be ordered
 711          */
 712         $iGlobalRank = 0;
 713
 714         foreach ($aPhrases as $iPhrase => $aPhrase) {
 715             $aNewPhraseSearches = array();
 716             if ($bStructuredPhrases) $sPhraseType = $aPhraseTypes[$iPhrase];
 717             else $sPhraseType = '';
 718
 719             foreach ($aPhrase['wordsets'] as $iWordSet => $aWordset) {
 720                 // Too many permutations - too expensive
 721                 if ($iWordSet > 120) break;
 722
 723                 $aWordsetSearches = $aSearches;
 724
 725                 // Add all words from this wordset
 726                 foreach ($aWordset as $iToken => $sToken) {
 727                     //echo "<br><b>$sToken</b>";
 728                     $aNewWordsetSearches = array();
 729
 730                     foreach ($aWordsetSearches as $aCurrentSearch) {
 731                         //echo "<i>";
 732                         //var_dump($aCurrentSearch);
 733                         //echo "</i>";
 734
 735                         // If the token is valid
 736                         if (isset($aValidTokens[' '.$sToken])) {
 737                             // TODO variable should go into aCurrentSearch
 738                             $bHavePostcode = false;
 739                             foreach ($aValidTokens[' '.$sToken] as $aSearchTerm) {
 740                                 $aSearch = $aCurrentSearch;
 741                                 $aSearch['iSearchRank']++;
 742                                 if (($sPhraseType == '' || $sPhraseType == 'country') && !empty($aSearchTerm['country_code']) && $aSearchTerm['country_code'] != '0') {
 743                                     if ($aSearch['sCountryCode'] === false) {
 744                                         $aSearch['sCountryCode'] = strtolower($aSearchTerm['country_code']);
 745                                         // Country is almost always at the end of the string - increase score for finding it anywhere else (optimisation)
 746                                         if (($iToken+1 != sizeof($aWordset) || $iPhrase+1 != sizeof($aPhrases))) {
 747                                             $aSearch['iSearchRank'] += 5;
 748                                         }
 749                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 750                                         // If it is at the beginning, we can be almost sure that this is the wrong order
 751                                         // Increase score for all searches.
 752                                         if ($iToken == 0 && $iPhrase == 0) {
 753                                             $iGlobalRank++;
 754                                         }
 755                                     }
 756                                 } elseif (($sPhraseType == '' || $sPhraseType == 'postalcode') && $aSearchTerm['class'] == 'place' && $aSearchTerm['type'] == 'postcode') {
 757                                     // We need to try the case where the postal code is the primary element (i.e. no way to tell if it is (postalcode, city) OR (city, postalcode) so try both
 758                                     if ($aSearch['sPostcode'] === '' &&
 759                                         isset($aSearchTerm['word']) && $aSearchTerm['word'] && strpos($sNormQuery, $this->normTerm($aSearchTerm['word'])) !== false) {
 760                                         // If we have structured search or this is the first term,
 761                                         // make the postcode the primary search element.
 762                                         if (!$bHavePostcode && $aSearch['sOperator'] === '' && ($sPhraseType == 'postalcode' || ($iToken == 0 && $iPhrase == 0))) {
 763                                             $aNewSearch = $aSearch;
 764                                             $aNewSearch['sOperator'] = 'postcode';
 765                                             $aNewSearch['aAddress'] = array_merge($aNewSearch['aAddress'], $aNewSearch['aName']);
 766                                             $aNewSearch['aName'] = array($aSearchTerm['word_id'] => $aSearchTerm['word']);
 767                                             if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aNewSearch;
 768                                             $bHavePostcode = true;
 769                                         }
 770
 771                                         // If we have a structured search or this is not the first term,
 772                                         // add the postcode as an addendum.
 773                                         if ($aSearch['sOperator'] !== 'postcode' && ($sPhraseType == 'postalcode' || sizeof($aSearch['aName']))) {
 774                                             $aSearch['sPostcode'] = $aSearchTerm['word'];
 775                                             if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 776                                         }
 777                                     }
 778                                 } elseif (($sPhraseType == '' || $sPhraseType == 'street') && $aSearchTerm['class'] == 'place' && $aSearchTerm['type'] == 'house') {
 779                                     if ($aSearch['sHouseNumber'] === '' && $aSearch['sOperator'] !== 'postcode') {
 780                                         $aSearch['sHouseNumber'] = $sToken;
 781                                         // sanity check: if the housenumber is not mainly made
 782                                         // up of numbers, add a penalty
 783                                         if (preg_match_all("/[^0-9]/", $sToken, $aMatches) > 2) $aSearch['iSearchRank']++;
 784                                         // also housenumbers should appear in the first or second phrase
 785                                         if ($iPhrase > 1) $aSearch['iSearchRank'] += 1;
 786                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 787                                         /*
 788                                         // Fall back to not searching for this item (better than nothing)
 789                                         $aSearch = $aCurrentSearch;
 790                                         $aSearch['iSearchRank'] += 1;
 791                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 792                                          */
 793                                     }
 794                                 } elseif ($sPhraseType == '' && $aSearchTerm['class'] !== '' && $aSearchTerm['class'] !== null) {
 795                                     // require a normalized exact match of the term
 796                                     // if we have the normalizer version of the query
 797                                     // available
 798                                     if ($aSearch['sOperator'] === ''
 799                                         && ($sNormQuery === null || !($aSearchTerm['word'] && strpos($sNormQuery, $aSearchTerm['word']) === false))) {
 800                                         $aSearch['sClass'] = $aSearchTerm['class'];
 801                                         $aSearch['sType'] = $aSearchTerm['type'];
 802                                         if ($aSearchTerm['operator'] == '') {
 803                                             $aSearch['sOperator'] = sizeof($aSearch['aName']) ? 'name' :  'near';
 804                                             $aSearch['iSearchRank'] += 2;
 805                                         } else {
 806                                             $aSearch['sOperator'] = 'near'; // near = in for the moment
 807                                         }
 808
 809                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 810                                     }
 811                                 } elseif (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id']) {
 812                                     if (sizeof($aSearch['aName'])) {
 813                                         if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strpos($sToken, ' ') !== false)) {
 814                                             $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 815                                         } else {
 816                                             $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 817                                             $aSearch['iSearchRank'] += 1000; // skip;
 818                                         }
 819                                     } else {
 820                                         $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 821                                         //$aSearch['iNamePhrase'] = $iPhrase;
 822                                     }
 823                                     if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 824                                 }
 825                             }
 826                         }
 827                         // Look for partial matches.
 828                         // Note that there is no point in adding country terms here
 829                         // because country are omitted in the address.
 830                         if (isset($aValidTokens[$sToken]) && $sPhraseType != 'country') {
 831                             // Allow searching for a word - but at extra cost
 832                             foreach ($aValidTokens[$sToken] as $aSearchTerm) {
 833                                 if (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id']) {
 834                                     if ((!$bStructuredPhrases || $iPhrase > 0) && sizeof($aCurrentSearch['aName']) && strpos($sToken, ' ') === false) {
 835                                         $aSearch = $aCurrentSearch;
 836                                         $aSearch['iSearchRank'] += 1;
 837                                         if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency) {
 838                                             $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 839                                             if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 840                                         } elseif (isset($aValidTokens[' '.$sToken])) { // revert to the token version?
 841                                             $aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 842                                             $aSearch['iSearchRank'] += 1;
 843                                             if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 844                                             foreach ($aValidTokens[' '.$sToken] as $aSearchTermToken) {
 845                                                 if (empty($aSearchTermToken['country_code'])
 846                                                     && empty($aSearchTermToken['lat'])
 847                                                     && empty($aSearchTermToken['class'])
 848                                                 ) {
 849                                                     $aSearch = $aCurrentSearch;
 850                                                     $aSearch['iSearchRank'] += 1;
 851                                                     $aSearch['aAddress'][$aSearchTermToken['word_id']] = $aSearchTermToken['word_id'];
 852                                                     if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 853                                                 }
 854                                             }
 855                                         } else {
 856                                             $aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 857                                             if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
 858                                             if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 859                                         }
 860                                     }
 861
 862                                     if (!sizeof($aCurrentSearch['aName']) || $aCurrentSearch['iNamePhrase'] == $iPhrase) {
 863                                         $aSearch = $aCurrentSearch;
 864                                         $aSearch['iSearchRank'] += 1;
 865                                         if (!sizeof($aCurrentSearch['aName'])) $aSearch['iSearchRank'] += 1;
 866                                         if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
 867                                         if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency) {
 868                                             $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 869                                         } else {
 870                                             $aSearch['aNameNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 871                                         }
 872                                         $aSearch['iNamePhrase'] = $iPhrase;
 873                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 874                                     }
 875                                 }
 876                             }
 877                         } else {
 878                             // Allow skipping a word - but at EXTREAM cost
 879                             //$aSearch = $aCurrentSearch;
 880                             //$aSearch['iSearchRank']+=100;
 881                             //$aNewWordsetSearches[] = $aSearch;
 882                         }
 883                     }
 884                     // Sort and cut
 885                     usort($aNewWordsetSearches, 'bySearchRank');
 886                     $aWordsetSearches = array_slice($aNewWordsetSearches, 0, 50);
 887                 }
 888                 //var_Dump('<hr>',sizeof($aWordsetSearches)); exit;
 889
 890                 $aNewPhraseSearches = array_merge($aNewPhraseSearches, $aNewWordsetSearches);
 891                 usort($aNewPhraseSearches, 'bySearchRank');
 892
 893                 $aSearchHash = array();
 894                 foreach ($aNewPhraseSearches as $iSearch => $aSearch) {
 895                     $sHash = serialize($aSearch);
 896                     if (isset($aSearchHash[$sHash])) unset($aNewPhraseSearches[$iSearch]);
 897                     else $aSearchHash[$sHash] = 1;
 898                 }
 899
 900                 $aNewPhraseSearches = array_slice($aNewPhraseSearches, 0, 50);
 901             }
 902
 903             // Re-group the searches by their score, junk anything over 20 as just not worth trying
 904             $aGroupedSearches = array();
 905             foreach ($aNewPhraseSearches as $aSearch) {
 906                 if ($aSearch['iSearchRank'] < $this->iMaxRank) {
 907                     if (!isset($aGroupedSearches[$aSearch['iSearchRank']])) $aGroupedSearches[$aSearch['iSearchRank']] = array();
 908                     $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
 909                 }
 910             }
 911             ksort($aGroupedSearches);
 912
 913             $iSearchCount = 0;
 914             $aSearches = array();
 915             foreach ($aGroupedSearches as $iScore => $aNewSearches) {
 916                 $iSearchCount += sizeof($aNewSearches);
 917                 $aSearches = array_merge($aSearches, $aNewSearches);
 918                 if ($iSearchCount > 50) break;
 919             }
 920
 921             //if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
 922         }
 923
 924         // Revisit searches, giving penalty to unlikely combinations
 925         $aGroupedSearches = array();
 926         foreach ($aSearches as $aSearch) {
 927             if (!$aSearch['aName']) {
 928                 if ($aSearch['sHouseNumber']) {
 929                     continue;
 930                 }
 931             }
 932             $aSearch['iSearchRank'] += $iGlobalRank;
 933             $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
 934         }
 935         ksort($aGroupedSearches);
 936
 937         return $aGroupedSearches;
 938     }
 939
 940     /* Perform the actual query lookup.
 941
 942         Returns an ordered list of results, each with the following fields:
 943             osm_type: type of corresponding OSM object
 944                         N - node
 945                         W - way
 946                         R - relation
 947                         P - postcode (internally computed)
 948             osm_id: id of corresponding OSM object
 949             class: general object class (corresponds to tag key of primary OSM tag)
 950             type: subclass of object (corresponds to tag value of primary OSM tag)
 951             admin_level: see http://wiki.openstreetmap.org/wiki/Admin_level
 952             rank_search: rank in search hierarchy
 953                         (see also http://wiki.openstreetmap.org/wiki/Nominatim/Development_overview#Country_to_street_level)
 954             rank_address: rank in address hierarchy (determines orer in address)
 955             place_id: internal key (may differ between different instances)
 956             country_code: ISO country code
 957             langaddress: localized full address
 958             placename: localized name of object
 959             ref: content of ref tag (if available)
 960             lon: longitude
 961             lat: latitude
 962             importance: importance of place based on Wikipedia link count
 963             addressimportance: cumulated importance of address elements
 964             extra_place: type of place (for admin boundaries, if there is a place tag)
 965             aBoundingBox: bounding Box
 966             label: short description of the object class/type (English only)
 967             name: full name (currently the same as langaddress)
 968             foundorder: secondary ordering for places with same importance
 969     */
 970
 971
 972     public function lookup()
 973     {
 974         if (!$this->sQuery && !$this->aStructuredQuery) return array();
 975
 976         $sNormQuery = $this->normTerm($this->sQuery);
 977         $sLanguagePrefArraySQL = "ARRAY[".join(',', array_map("getDBQuoted", $this->aLangPrefOrder))."]";
 978         $sCountryCodesSQL = false;
 979         if ($this->aCountryCodes) {
 980             $sCountryCodesSQL = join(',', array_map('addQuotes', $this->aCountryCodes));
 981         }
 982
 983         $sQuery = $this->sQuery;
 984         if (!preg_match('//u', $sQuery)) {
 985             userError("Query string is not UTF-8 encoded.");
 986         }
 987
 988         // Conflicts between US state abreviations and various words for 'the' in different languages
 989         if (isset($this->aLangPrefOrder['name:en'])) {
 990             $sQuery = preg_replace('/(^|,)\s*il\s*(,|$)/', '\1illinois\2', $sQuery);
 991             $sQuery = preg_replace('/(^|,)\s*al\s*(,|$)/', '\1alabama\2', $sQuery);
 992             $sQuery = preg_replace('/(^|,)\s*la\s*(,|$)/', '\1louisiana\2', $sQuery);
 993         }
 994
 995         $bBoundingBoxSearch = $this->bBoundedSearch && $this->sViewboxSmallSQL;
 996         if ($this->sViewboxCentreSQL) {
 997             // For complex viewboxes (routes) precompute the bounding geometry
 998             $sGeom = chksql(
 999                 $this->oDB->getOne("select ".$this->sViewboxSmallSQL),
1000                 "Could not get small viewbox"
1001             );
1002             $this->sViewboxSmallSQL = "'".$sGeom."'::geometry";
1003
1004             $sGeom = chksql(
1005                 $this->oDB->getOne("select ".$this->sViewboxLargeSQL),
1006                 "Could not get large viewbox"
1007             );
1008             $this->sViewboxLargeSQL = "'".$sGeom."'::geometry";
1009         }
1010
1011         // Do we have anything that looks like a lat/lon pair?
1012         $oNearPoint = false;
1013         if ($aLooksLike = NearPoint::extractFromQuery($sQuery)) {
1014             $oNearPoint = $aLooksLike['pt'];
1015             $sQuery = $aLooksLike['query'];
1016         }
1017
1018         $aSearchResults = array();
1019         if ($sQuery || $this->aStructuredQuery) {
1020             // Start with a blank search
1021             $aSearches = array(
1022                           array(
1023                            'iSearchRank' => 0,
1024                            'iNamePhrase' => -1,
1025                            'sCountryCode' => false,
1026                            'aName' => array(),
1027                            'aAddress' => array(),
1028                            'aFullNameAddress' => array(),
1029                            'aNameNonSearch' => array(),
1030                            'aAddressNonSearch' => array(),
1031                            'sOperator' => '',
1032                            'aFeatureName' => array(),
1033                            'sClass' => '',
1034                            'sType' => '',
1035                            'sHouseNumber' => '',
1036                            'sPostcode' => '',
1037                            'oNear' => $oNearPoint
1038                           )
1039                          );
1040
1041             // Any 'special' terms in the search?
1042             $bSpecialTerms = false;
1043             preg_match_all('/\\[([\\w_]*)=([\\w_]*)\\]/', $sQuery, $aSpecialTermsRaw, PREG_SET_ORDER);
1044             foreach ($aSpecialTermsRaw as $aSpecialTerm) {
1045                 $sQuery = str_replace($aSpecialTerm[0], ' ', $sQuery);
1046                 if (!$bSpecialTerms) {
1047                     $aNewSearches = array();
1048                     foreach ($aSearches as $aSearch) {
1049                         $aNewSearch = $aSearch;
1050                         $aNewSearch['sClass'] = $aSpecialTerm[1];
1051                         $aNewSearch['sType'] = $aSpecialTerm[2];
1052                         $aNewSearches[] = $aNewSearch;
1053                     }
1054
1055                     $aSearches = $aNewSearches;
1056                     $bSpecialTerms = true;
1057                 }
1058             }
1059
1060             preg_match_all('/\\[([\\w ]*)\\]/u', $sQuery, $aSpecialTermsRaw, PREG_SET_ORDER);
1061             if (isset($this->aStructuredQuery['amenity']) && $this->aStructuredQuery['amenity']) {
1062                 $aSpecialTermsRaw[] = array('['.$this->aStructuredQuery['amenity'].']', $this->aStructuredQuery['amenity']);
1063                 unset($this->aStructuredQuery['amenity']);
1064             }
1065
1066             foreach ($aSpecialTermsRaw as $aSpecialTerm) {
1067                 $sQuery = str_replace($aSpecialTerm[0], ' ', $sQuery);
1068                 if ($bSpecialTerms) {
1069                     continue;
1070                 }
1071
1072                 $sToken = chksql($this->oDB->getOne("SELECT make_standard_name('".pg_escape_string($aSpecialTerm[1])."') AS string"));
1073                 $sSQL = 'SELECT * ';
1074                 $sSQL .= 'FROM ( ';
1075                 $sSQL .= '   SELECT word_id, word_token, word, class, type, country_code, operator';
1076                 $sSQL .= '   FROM word ';
1077                 $sSQL .= '   WHERE word_token in (\' '.$sToken.'\')';
1078                 $sSQL .= ') AS x ';
1079                 $sSQL .= ' WHERE (class is not null AND class not in (\'place\'))';
1080                 if (CONST_Debug) var_Dump($sSQL);
1081                 $aSearchWords = chksql($this->oDB->getAll($sSQL));
1082                 $aNewSearches = array();
1083                 foreach ($aSearches as $aSearch) {
1084                     foreach ($aSearchWords as $aSearchTerm) {
1085                         $aNewSearch = $aSearch;
1086                         $aNewSearch['sClass'] = $aSearchTerm['class'];
1087                         $aNewSearch['sType'] = $aSearchTerm['type'];
1088                         $aNewSearches[] = $aNewSearch;
1089                         $bSpecialTerms = true;
1090                     }
1091                 }
1092                 $aSearches = $aNewSearches;
1093             }
1094
1095             // Split query into phrases
1096             // Commas are used to reduce the search space by indicating where phrases split
1097             if ($this->aStructuredQuery) {
1098                 $aPhrases = $this->aStructuredQuery;
1099                 $bStructuredPhrases = true;
1100             } else {
1101                 $aPhrases = explode(',', $sQuery);
1102                 $bStructuredPhrases = false;
1103             }
1104
1105             // Convert each phrase to standard form
1106             // Create a list of standard words
1107             // Get all 'sets' of words
1108             // Generate a complete list of all
1109             $aTokens = array();
1110             foreach ($aPhrases as $iPhrase => $sPhrase) {
1111                 $aPhrase = chksql(
1112                     $this->oDB->getRow("SELECT make_standard_name('".pg_escape_string($sPhrase)."') as string"),
1113                     "Cannot normalize query string (is it a UTF-8 string?)"
1114                 );
1115                 if (trim($aPhrase['string'])) {
1116                     $aPhrases[$iPhrase] = $aPhrase;
1117                     $aPhrases[$iPhrase]['words'] = explode(' ', $aPhrases[$iPhrase]['string']);
1118                     $aPhrases[$iPhrase]['wordsets'] = getWordSets($aPhrases[$iPhrase]['words'], 0);
1119                     $aTokens = array_merge($aTokens, getTokensFromSets($aPhrases[$iPhrase]['wordsets']));
1120                 } else {
1121                     unset($aPhrases[$iPhrase]);
1122                 }
1123             }
1124
1125             // Reindex phrases - we make assumptions later on that they are numerically keyed in order
1126             $aPhraseTypes = array_keys($aPhrases);
1127             $aPhrases = array_values($aPhrases);
1128
1129             if (sizeof($aTokens)) {
1130                 // Check which tokens we have, get the ID numbers
1131                 $sSQL = 'SELECT word_id, word_token, word, class, type, country_code, operator, search_name_count';
1132                 $sSQL .= ' FROM word ';
1133                 $sSQL .= ' WHERE word_token in ('.join(',', array_map("getDBQuoted", $aTokens)).')';
1134
1135                 if (CONST_Debug) var_Dump($sSQL);
1136
1137                 $aValidTokens = array();
1138                 $aDatabaseWords = chksql(
1139                     $this->oDB->getAll($sSQL),
1140                     "Could not get word tokens."
1141                 );
1142                 $aPossibleMainWordIDs = array();
1143                 $aWordFrequencyScores = array();
1144                 foreach ($aDatabaseWords as $aToken) {
1145                     // Very special case - require 2 letter country param to match the country code found
1146                     if ($bStructuredPhrases && $aToken['country_code'] && !empty($this->aStructuredQuery['country'])
1147                         && strlen($this->aStructuredQuery['country']) == 2 && strtolower($this->aStructuredQuery['country']) != $aToken['country_code']
1148                     ) {
1149                         continue;
1150                     }
1151
1152                     if (isset($aValidTokens[$aToken['word_token']])) {
1153                         $aValidTokens[$aToken['word_token']][] = $aToken;
1154                     } else {
1155                         $aValidTokens[$aToken['word_token']] = array($aToken);
1156                     }
1157                     if (!$aToken['class'] && !$aToken['country_code']) $aPossibleMainWordIDs[$aToken['word_id']] = 1;
1158                     $aWordFrequencyScores[$aToken['word_id']] = $aToken['search_name_count'] + 1;
1159                 }
1160                 if (CONST_Debug) var_Dump($aPhrases, $aValidTokens);
1161
1162                 // US ZIP+4 codes - if there is no token, merge in the 5-digit ZIP code
1163                 foreach ($aTokens as $sToken) {
1164                     if (!isset($aValidTokens[$sToken]) && preg_match('/^([0-9]{5}) [0-9]{4}$/', $sToken, $aData)) {
1165                         if (isset($aValidTokens[$aData[1]])) {
1166                             foreach ($aValidTokens[$aData[1]] as $aToken) {
1167                                 if (!$aToken['class']) {
1168                                     if (isset($aValidTokens[$sToken])) {
1169                                         $aValidTokens[$sToken][] = $aToken;
1170                                     } else {
1171                                         $aValidTokens[$sToken] = array($aToken);
1172                                     }
1173                                 }
1174                             }
1175                         }
1176                     }
1177                 }
1178
1179                 foreach ($aTokens as $sToken) {
1180                     // Unknown single word token with a number - assume it is a house number
1181                     if (!isset($aValidTokens[' '.$sToken]) && strpos($sToken, ' ') === false && preg_match('/[0-9]/', $sToken)) {
1182                         $aValidTokens[' '.$sToken] = array(array('class' => 'place', 'type' => 'house'));
1183                     }
1184                 }
1185
1186                 // Any words that have failed completely?
1187                 // TODO: suggestions
1188
1189                 // Start the search process
1190                 // array with: placeid => -1 | tiger-housenumber
1191                 $aResultPlaceIDs = array();
1192
1193                 $aGroupedSearches = $this->getGroupedSearches($aSearches, $aPhraseTypes, $aPhrases, $aValidTokens, $aWordFrequencyScores, $bStructuredPhrases, $sNormQuery);
1194
1195                 if ($this->bReverseInPlan) {
1196                     // Reverse phrase array and also reverse the order of the wordsets in
1197                     // the first and final phrase. Don't bother about phrases in the middle
1198                     // because order in the address doesn't matter.
1199                     $aPhrases = array_reverse($aPhrases);
1200                     $aPhrases[0]['wordsets'] = getInverseWordSets($aPhrases[0]['words'], 0);
1201                     if (sizeof($aPhrases) > 1) {
1202                         $aFinalPhrase = end($aPhrases);
1203                         $aPhrases[sizeof($aPhrases)-1]['wordsets'] = getInverseWordSets($aFinalPhrase['words'], 0);
1204                     }
1205                     $aReverseGroupedSearches = $this->getGroupedSearches($aSearches, null, $aPhrases, $aValidTokens, $aWordFrequencyScores, false, $sNormQuery);
1206
1207                     foreach ($aGroupedSearches as $aSearches) {
1208                         foreach ($aSearches as $aSearch) {
1209                             if ($aSearch['iSearchRank'] < $this->iMaxRank) {
1210                                 if (!isset($aReverseGroupedSearches[$aSearch['iSearchRank']])) $aReverseGroupedSearches[$aSearch['iSearchRank']] = array();
1211                                 $aReverseGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
1212                             }
1213                         }
1214                     }
1215
1216                     $aGroupedSearches = $aReverseGroupedSearches;
1217                     ksort($aGroupedSearches);
1218                 }
1219             } else {
1220                 // Re-group the searches by their score, junk anything over 20 as just not worth trying
1221                 $aGroupedSearches = array();
1222                 foreach ($aSearches as $aSearch) {
1223                     if ($aSearch['iSearchRank'] < $this->iMaxRank) {
1224                         if (!isset($aGroupedSearches[$aSearch['iSearchRank']])) $aGroupedSearches[$aSearch['iSearchRank']] = array();
1225                         $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
1226                     }
1227                 }
1228                 ksort($aGroupedSearches);
1229             }
1230
1231             if (CONST_Search_TryDroppedAddressTerms && sizeof($this->aStructuredQuery) > 0) {
1232                 $aCopyGroupedSearches = $aGroupedSearches;
1233                 foreach ($aCopyGroupedSearches as $iGroup => $aSearches) {
1234                     foreach ($aSearches as $iSearch => $aSearch) {
1235                         $aReductionsList = array($aSearch['aAddress']);
1236                         $iSearchRank = $aSearch['iSearchRank'];
1237                         while (sizeof($aReductionsList) > 0) {
1238                             $iSearchRank += 5;
1239                             if ($iSearchRank > iMaxRank) break 3;
1240                             $aNewReductionsList = array();
1241                             foreach ($aReductionsList as $aReductionsWordList) {
1242                                 for ($iReductionWord = 0; $iReductionWord < sizeof($aReductionsWordList); $iReductionWord++) {
1243                                     $aReductionsWordListResult = array_merge(array_slice($aReductionsWordList, 0, $iReductionWord), array_slice($aReductionsWordList, $iReductionWord+1));
1244                                     $aReverseSearch = $aSearch;
1245                                     $aSearch['aAddress'] = $aReductionsWordListResult;
1246                                     $aSearch['iSearchRank'] = $iSearchRank;
1247                                     $aGroupedSearches[$iSearchRank][] = $aReverseSearch;
1248                                     if (sizeof($aReductionsWordListResult) > 0) {
1249                                         $aNewReductionsList[] = $aReductionsWordListResult;
1250                                     }
1251                                 }
1252                             }
1253                             $aReductionsList = $aNewReductionsList;
1254                         }
1255                     }
1256                 }
1257                 ksort($aGroupedSearches);
1258             }
1259
1260             // Filter out duplicate searches
1261             $aSearchHash = array();
1262             foreach ($aGroupedSearches as $iGroup => $aSearches) {
1263                 foreach ($aSearches as $iSearch => $aSearch) {
1264                     $sHash = serialize($aSearch);
1265                     if (isset($aSearchHash[$sHash])) {
1266                         unset($aGroupedSearches[$iGroup][$iSearch]);
1267                         if (sizeof($aGroupedSearches[$iGroup]) == 0) unset($aGroupedSearches[$iGroup]);
1268                     } else {
1269                         $aSearchHash[$sHash] = 1;
1270                     }
1271                 }
1272             }
1273
1274             if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
1275
1276             $iGroupLoop = 0;
1277             $iQueryLoop = 0;
1278             foreach ($aGroupedSearches as $iGroupedRank => $aSearches) {
1279                 $iGroupLoop++;
1280                 foreach ($aSearches as $aSearch) {
1281                     $iQueryLoop++;
1282                     $searchedHousenumber = -1;
1283
1284                     if (CONST_Debug) echo "<hr><b>Search Loop, group $iGroupLoop, loop $iQueryLoop</b>";
1285                     if (CONST_Debug) _debugDumpGroupedSearches(array($iGroupedRank => array($aSearch)), $aValidTokens);
1286
1287                     if ($sCountryCodesSQL && $aSearch['sCountryCode'] && !in_array($aSearch['sCountryCode'], $this->aCountryCodes)) {
1288                         continue;
1289                     }
1290
1291                     // No location term?
1292                     if (!sizeof($aSearch['aName']) && !sizeof($aSearch['aAddress'])) {
1293                         if ($aSearch['sCountryCode'] && !$aSearch['sClass'] && !$aSearch['sHouseNumber'] && !$aSearch['oNear']) {
1294                             // Just looking for a country by code - look it up
1295                             if (4 >= $this->iMinAddressRank && 4 <= $this->iMaxAddressRank) {
1296                                 $sSQL = "SELECT place_id FROM placex WHERE country_code='".$aSearch['sCountryCode']."' AND rank_search = 4";
1297                                 if ($bBoundingBoxSearch)
1298                                     $sSQL .= " AND _st_intersects($this->sViewboxSmallSQL, geometry)";
1299                                 $sSQL .= " ORDER BY st_area(geometry) DESC LIMIT 1";
1300                                 if (CONST_Debug) var_dump($sSQL);
1301                                 $aPlaceIDs = chksql($this->oDB->getCol($sSQL));
1302                             } else {
1303                                 $aPlaceIDs = array();
1304                             }
1305                         } else {
1306                             if (!$bBoundingBoxSearch && !$aSearch['oNear']) continue;
1307                             if (!$aSearch['sClass']) continue;
1308
1309                             $sSQL = "SELECT COUNT(*) FROM pg_tables WHERE tablename = 'place_classtype_".$aSearch['sClass']."_".$aSearch['sType']."'";
1310                             if (chksql($this->oDB->getOne($sSQL))) {
1311                                 $sSQL = "SELECT place_id FROM place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." ct";
1312                                 if ($sCountryCodesSQL) $sSQL .= " JOIN placex USING (place_id)";
1313                                 if ($aSearch['oNear']) {
1314                                     $sSQL .= " WHERE ".$aSearch['oNear']->withinSQL('ct.centroid');
1315                                 } else {
1316                                     $sSQL .= " WHERE st_contains($this->sViewboxSmallSQL, ct.centroid)";
1317                                 }
1318                                 if ($sCountryCodesSQL) $sSQL .= " AND country_code in ($sCountryCodesSQL)";
1319                                 if (sizeof($this->aExcludePlaceIDs)) {
1320                                     $sSQL .= " AND place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1321                                 }
1322                                 if ($this->sViewboxCentreSQL) {
1323                                     $sSQL .= " ORDER BY ST_Distance($this->sViewboxCentreSQL, ct.centroid) ASC";
1324                                 } elseif ($aSearch['oNear']) {
1325                                     $sSQL .= " ORDER BY ".$aSearch['oNear']->distanceSQL('ct.centroid').' ASC';
1326                                 }
1327                                 $sSQL .= " limit $this->iLimit";
1328                                 if (CONST_Debug) var_dump($sSQL);
1329                                 $aPlaceIDs = chksql($this->oDB->getCol($sSQL));
1330                             } else if ($aSearch['oNear']) {
1331                                 $sSQL = "SELECT place_id ";
1332                                 $sSQL .= "FROM placex ";
1333                                 $sSQL .= "WHERE class='".$aSearch['sClass']."' ";
1334                                 $sSQL .= "  AND type='".$aSearch['sType']."'";
1335                                 $sSQL .= "  AND ".$aSearch['oNear']->withinSQL('geometry');
1336                                 $sSQL .= "  AND linked_place_id is null";
1337                                 if ($sCountryCodesSQL) $sSQL .= " AND country_code in ($sCountryCodesSQL)";
1338                                 $sSQL .= " ORDER BY ".$aSearch['oNear']->distanceSQL('centroid')." ASC";
1339                                 $sSQL .= " LIMIT $this->iLimit";
1340                                 if (CONST_Debug) var_dump($sSQL);
1341                                 $aPlaceIDs = chksql($this->oDB->getCol($sSQL));
1342                             }
1343                         }
1344                     } elseif ($aSearch['oNear'] && !sizeof($aSearch['aName']) && !sizeof($aSearch['aAddress']) && !$aSearch['sClass']) {
1345                         // If a coordinate is given, the search must either
1346                         // be for a name or a special search. Ignore everythin else.
1347                         $aPlaceIDs = array();
1348                     } elseif ($aSearch['sOperator'] == 'postcode') {
1349                         $sSQL  = "SELECT p.place_id FROM location_postcode p ";
1350                         if (sizeof($aSearch['aAddress'])) {
1351                             $sSQL .= ", search_name s ";
1352                             $sSQL .= "WHERE s.place_id = p.parent_place_id ";
1353                             $sSQL .= "AND array_cat(s.nameaddress_vector, s.name_vector) @> ARRAY[".join($aSearch['aAddress'], ",")."] AND ";
1354                         } else {
1355                             $sSQL .= " WHERE ";
1356                         }
1357                         $sSQL .= "p.postcode = '".pg_escape_string(reset($aSearch['aName']))."'";
1358                         if ($aSearch['sCountryCode']) {
1359                             $sSQL .= " AND p.country_code = '".$aSearch['sCountryCode']."'";
1360                         } elseif ($sCountryCodesSQL) {
1361                             $sSQL .= " AND p.country_code in ($sCountryCodesSQL)";
1362                         }
1363                         $sSQL .= " LIMIT $this->iLimit";
1364                         if (CONST_Debug) var_dump($sSQL);
1365                         $aPlaceIDs = chksql($this->oDB->getCol($sSQL));
1366                     } else {
1367                         $aPlaceIDs = array();
1368
1369                         // First we need a position, either aName or fLat or both
1370                         $aTerms = array();
1371                         $aOrder = array();
1372
1373                         if ($aSearch['sHouseNumber'] && sizeof($aSearch['aAddress'])) {
1374                             $sHouseNumberRegex = '\\\\m'.$aSearch['sHouseNumber'].'\\\\M';
1375                             $aOrder[] = "";
1376                             $aOrder[0] = "  (";
1377                             $aOrder[0] .= "   EXISTS(";
1378                             $aOrder[0] .= "     SELECT place_id ";
1379                             $aOrder[0] .= "     FROM placex ";
1380                             $aOrder[0] .= "     WHERE parent_place_id = search_name.place_id";
1381                             $aOrder[0] .= "       AND transliteration(housenumber) ~* E'".$sHouseNumberRegex."' ";
1382                             $aOrder[0] .= "     LIMIT 1";
1383                             $aOrder[0] .= "   ) ";
1384                             // also housenumbers from interpolation lines table are needed
1385                             $aOrder[0] .= "   OR EXISTS(";
1386                             $aOrder[0] .= "     SELECT place_id ";
1387                             $aOrder[0] .= "     FROM location_property_osmline ";
1388                             $aOrder[0] .= "     WHERE parent_place_id = search_name.place_id";
1389                             $aOrder[0] .= "       AND startnumber is not NULL";
1390                             $aOrder[0] .= "       AND ".intval($aSearch['sHouseNumber']).">=startnumber ";
1391                             $aOrder[0] .= "       AND ".intval($aSearch['sHouseNumber'])."<=endnumber ";
1392                             $aOrder[0] .= "     LIMIT 1";
1393                             $aOrder[0] .= "   )";
1394                             $aOrder[0] .= " )";
1395                             $aOrder[0] .= " DESC";
1396                         }
1397
1398                         // TODO: filter out the pointless search terms (2 letter name tokens and less)
1399                         // they might be right - but they are just too darned expensive to run
1400                         if (sizeof($aSearch['aName'])) $aTerms[] = "name_vector @> ARRAY[".join($aSearch['aName'], ",")."]";
1401                         if (sizeof($aSearch['aNameNonSearch'])) $aTerms[] = "array_cat(name_vector,ARRAY[]::integer[]) @> ARRAY[".join($aSearch['aNameNonSearch'], ",")."]";
1402                         if (sizeof($aSearch['aAddress']) && $aSearch['aName'] != $aSearch['aAddress']) {
1403                             // For infrequent name terms disable index usage for address
1404                             if (CONST_Search_NameOnlySearchFrequencyThreshold
1405                                 && sizeof($aSearch['aName']) == 1
1406                                 && $aWordFrequencyScores[$aSearch['aName'][reset($aSearch['aName'])]] < CONST_Search_NameOnlySearchFrequencyThreshold
1407                             ) {
1408                                 $aTerms[] = "array_cat(nameaddress_vector,ARRAY[]::integer[]) @> ARRAY[".join(array_merge($aSearch['aAddress'], $aSearch['aAddressNonSearch']), ",")."]";
1409                             } else {
1410                                 $aTerms[] = "nameaddress_vector @> ARRAY[".join($aSearch['aAddress'], ",")."]";
1411                                 if (sizeof($aSearch['aAddressNonSearch'])) {
1412                                     $aTerms[] = "array_cat(nameaddress_vector,ARRAY[]::integer[]) @> ARRAY[".join($aSearch['aAddressNonSearch'], ",")."]";
1413                                 }
1414                             }
1415                         }
1416                         if ($aSearch['sCountryCode']) $aTerms[] = "country_code = '".pg_escape_string($aSearch['sCountryCode'])."'";
1417                         if ($aSearch['sHouseNumber']) {
1418                             $aTerms[] = "address_rank between 16 and 27";
1419                         } elseif (!$aSearch['sClass'] || $aSearch['sOperator'] == 'name') {
1420                             if ($this->iMinAddressRank > 0) {
1421                                 $aTerms[] = "address_rank >= ".$this->iMinAddressRank;
1422                             }
1423                             if ($this->iMaxAddressRank < 30) {
1424                                 $aTerms[] = "address_rank <= ".$this->iMaxAddressRank;
1425                             }
1426                         }
1427                         if ($aSearch['oNear']) {
1428                             $aTerms[] = $aSearch['oNear']->withinSQL('centroid');
1429
1430                             $aOrder[] = $aSearch['oNear']->distanceSQL('centroid');
1431                         } elseif ($aSearch['sPostcode']) {
1432                             if (!sizeof($aSearch['aAddress'])) {
1433                                 $aTerms[] = "EXISTS(SELECT place_id FROM location_postcode p WHERE p.postcode = '".$aSearch['sPostcode']."' AND ST_DWithin(search_name.centroid, p.geometry, 0.1))";
1434                             } else {
1435                                 $aOrder[] = "(SELECT min(ST_Distance(search_name.centroid, p.geometry)) FROM location_postcode p WHERE p.postcode = '".$aSearch['sPostcode']."')";
1436                             }
1437                         }
1438                         if (sizeof($this->aExcludePlaceIDs)) {
1439                             $aTerms[] = "place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1440                         }
1441                         if ($sCountryCodesSQL) {
1442                             $aTerms[] = "country_code in ($sCountryCodesSQL)";
1443                         }
1444
1445                         if ($bBoundingBoxSearch) $aTerms[] = "centroid && $this->sViewboxSmallSQL";
1446                         if ($oNearPoint) {
1447                             $aOrder[] = $oNearPoint->distanceSQL('centroid');
1448                         }
1449
1450                         if ($aSearch['sHouseNumber']) {
1451                             $sImportanceSQL = '- abs(26 - address_rank) + 3';
1452                         } else {
1453                             $sImportanceSQL = '(CASE WHEN importance = 0 OR importance IS NULL THEN 0.75-(search_rank::float/40) ELSE importance END)';
1454                         }
1455                         if ($this->sViewboxSmallSQL) $sImportanceSQL .= " * CASE WHEN ST_Contains($this->sViewboxSmallSQL, centroid) THEN 1 ELSE 0.5 END";
1456                         if ($this->sViewboxLargeSQL) $sImportanceSQL .= " * CASE WHEN ST_Contains($this->sViewboxLargeSQL, centroid) THEN 1 ELSE 0.5 END";
1457
1458                         $aOrder[] = "$sImportanceSQL DESC";
1459                         if (sizeof($aSearch['aFullNameAddress'])) {
1460                             $sExactMatchSQL = ' ( ';
1461                             $sExactMatchSQL .= '   SELECT count(*) FROM ( ';
1462                             $sExactMatchSQL .= '      SELECT unnest(ARRAY['.join($aSearch['aFullNameAddress'], ",").']) ';
1463                             $sExactMatchSQL .= '      INTERSECT ';
1464                             $sExactMatchSQL .= '      SELECT unnest(nameaddress_vector)';
1465                             $sExactMatchSQL .= '   ) s';
1466                             $sExactMatchSQL .= ') as exactmatch';
1467                             $aOrder[] = 'exactmatch DESC';
1468                         } else {
1469                             $sExactMatchSQL = '0::int as exactmatch';
1470                         }
1471
1472                         if (sizeof($aTerms)) {
1473                             $sSQL = "SELECT place_id, ";
1474                             $sSQL .= $sExactMatchSQL;
1475                             $sSQL .= " FROM search_name";
1476                             $sSQL .= " WHERE ".join(' and ', $aTerms);
1477                             $sSQL .= " ORDER BY ".join(', ', $aOrder);
1478                             if ($aSearch['sHouseNumber'] || $aSearch['sClass']) {
1479                                 $sSQL .= " LIMIT 20";
1480                             } elseif (!sizeof($aSearch['aName']) && !sizeof($aSearch['aAddress']) && $aSearch['sClass']) {
1481                                 $sSQL .= " LIMIT 1";
1482                             } else {
1483                                 $sSQL .= " LIMIT ".$this->iLimit;
1484                             }
1485
1486                             if (CONST_Debug) var_dump($sSQL);
1487                             $aViewBoxPlaceIDs = chksql(
1488                                 $this->oDB->getAll($sSQL),
1489                                 "Could not get places for search terms."
1490                             );
1491                             //var_dump($aViewBoxPlaceIDs);
1492                             // Did we have an viewbox matches?
1493                             $aPlaceIDs = array();
1494                             $bViewBoxMatch = false;
1495                             foreach ($aViewBoxPlaceIDs as $aViewBoxRow) {
1496                                 //if ($bViewBoxMatch == 1 && $aViewBoxRow['in_small'] == 'f') break;
1497                                 //if ($bViewBoxMatch == 2 && $aViewBoxRow['in_large'] == 'f') break;
1498                                 //if ($aViewBoxRow['in_small'] == 't') $bViewBoxMatch = 1;
1499                                 //else if ($aViewBoxRow['in_large'] == 't') $bViewBoxMatch = 2;
1500                                 $aPlaceIDs[] = $aViewBoxRow['place_id'];
1501                                 $this->exactMatchCache[$aViewBoxRow['place_id']] = $aViewBoxRow['exactmatch'];
1502                             }
1503                         }
1504                         //var_Dump($aPlaceIDs);
1505                         //exit;
1506
1507                         //now search for housenumber, if housenumber provided
1508                         if ($aSearch['sHouseNumber'] && sizeof($aPlaceIDs)) {
1509                             $searchedHousenumber = intval($aSearch['sHouseNumber']);
1510                             $aRoadPlaceIDs = $aPlaceIDs;
1511                             $sPlaceIDs = join(',', $aPlaceIDs);
1512
1513                             // Now they are indexed, look for a house attached to a street we found
1514                             $sHouseNumberRegex = '\\\\m'.$aSearch['sHouseNumber'].'\\\\M';
1515                             $sSQL = "SELECT place_id FROM placex ";
1516                             $sSQL .= "WHERE parent_place_id in (".$sPlaceIDs.") and transliteration(housenumber) ~* E'".$sHouseNumberRegex."'";
1517                             if (sizeof($this->aExcludePlaceIDs)) {
1518                                 $sSQL .= " AND place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1519                             }
1520                             $sSQL .= " LIMIT $this->iLimit";
1521                             if (CONST_Debug) var_dump($sSQL);
1522                             $aPlaceIDs = chksql($this->oDB->getCol($sSQL));
1523
1524                             // if nothing found, search in the interpolation line table
1525                             if (!sizeof($aPlaceIDs)) {
1526                                 // do we need to use transliteration and the regex for housenumbers???
1527                                 //new query for lines, not housenumbers anymore
1528                                 $sSQL = "SELECT distinct place_id FROM location_property_osmline";
1529                                 $sSQL .= " WHERE startnumber is not NULL and parent_place_id in (".$sPlaceIDs.") and (";
1530                                 if ($searchedHousenumber%2 == 0) {
1531                                     //if housenumber is even, look for housenumber in streets with interpolationtype even or all
1532                                     $sSQL .= "interpolationtype='even'";
1533                                 } else {
1534                                     //look for housenumber in streets with interpolationtype odd or all
1535                                     $sSQL .= "interpolationtype='odd'";
1536                                 }
1537                                 $sSQL .= " or interpolationtype='all') and ";
1538                                 $sSQL .= $searchedHousenumber.">=startnumber and ";
1539                                 $sSQL .= $searchedHousenumber."<=endnumber";
1540
1541                                 if (sizeof($this->aExcludePlaceIDs)) {
1542                                     $sSQL .= " AND place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1543                                 }
1544                                 //$sSQL .= " limit $this->iLimit";
1545                                 if (CONST_Debug) var_dump($sSQL);
1546                                 //get place IDs
1547                                 $aPlaceIDs = chksql($this->oDB->getCol($sSQL, 0));
1548                             }
1549
1550                             // If nothing found try the aux fallback table
1551                             if (CONST_Use_Aux_Location_data && !sizeof($aPlaceIDs)) {
1552                                 $sSQL = "SELECT place_id FROM location_property_aux ";
1553                                 $sSQL .= " WHERE parent_place_id in (".$sPlaceIDs.") ";
1554                                 $sSQL .= " AND housenumber = '".pg_escape_string($aSearch['sHouseNumber'])."'";
1555                                 if (sizeof($this->aExcludePlaceIDs)) {
1556                                     $sSQL .= " AND parent_place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1557                                 }
1558                                 //$sSQL .= " limit $this->iLimit";
1559                                 if (CONST_Debug) var_dump($sSQL);
1560                                 $aPlaceIDs = chksql($this->oDB->getCol($sSQL));
1561                             }
1562
1563                             //if nothing was found in placex or location_property_aux, then search in Tiger data for this housenumber(location_property_tiger)
1564                             if (CONST_Use_US_Tiger_Data && !sizeof($aPlaceIDs)) {
1565                                 $sSQL = "SELECT distinct place_id FROM location_property_tiger";
1566                                 $sSQL .= " WHERE parent_place_id in (".$sPlaceIDs.") and (";
1567                                 if ($searchedHousenumber%2 == 0) {
1568                                     $sSQL .= "interpolationtype='even'";
1569                                 } else {
1570                                     $sSQL .= "interpolationtype='odd'";
1571                                 }
1572                                 $sSQL .= " or interpolationtype='all') and ";
1573                                 $sSQL .= $searchedHousenumber.">=startnumber and ";
1574                                 $sSQL .= $searchedHousenumber."<=endnumber";
1575
1576                                 if (sizeof($this->aExcludePlaceIDs)) {
1577                                     $sSQL .= " AND place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1578                                 }
1579                                 //$sSQL .= " limit $this->iLimit";
1580                                 if (CONST_Debug) var_dump($sSQL);
1581                                 //get place IDs
1582                                 $aPlaceIDs = chksql($this->oDB->getCol($sSQL, 0));
1583                             }
1584
1585                             // Fallback to the road (if no housenumber was found)
1586                             if (!sizeof($aPlaceIDs) && preg_match('/[0-9]+/', $aSearch['sHouseNumber'])
1587                                 && ($aSearch['aAddress'] || $aSearch['sCountryCode'])) {
1588                                 $aPlaceIDs = $aRoadPlaceIDs;
1589                                 //set to -1, if no housenumbers were found
1590                                 $searchedHousenumber = -1;
1591                             }
1592                             //else: housenumber was found, remains saved in searchedHousenumber
1593                         }
1594
1595
1596                         if ($aSearch['sClass'] && sizeof($aPlaceIDs)) {
1597                             $sPlaceIDs = join(',', $aPlaceIDs);
1598                             $aClassPlaceIDs = array();
1599
1600                             if (!$aSearch['sOperator'] || $aSearch['sOperator'] == 'name') {
1601                                 // If they were searching for a named class (i.e. 'Kings Head pub') then we might have an extra match
1602                                 $sSQL = "SELECT place_id ";
1603                                 $sSQL .= " FROM placex ";
1604                                 $sSQL .= " WHERE place_id in ($sPlaceIDs) ";
1605                                 $sSQL .= "   AND class='".$aSearch['sClass']."' ";
1606                                 $sSQL .= "   AND type='".$aSearch['sType']."'";
1607                                 $sSQL .= "   AND linked_place_id is null";
1608                                 if ($sCountryCodesSQL) $sSQL .= " AND country_code in ($sCountryCodesSQL)";
1609                                 $sSQL .= " ORDER BY rank_search ASC ";
1610                                 $sSQL .= " LIMIT $this->iLimit";
1611                                 if (CONST_Debug) var_dump($sSQL);
1612                                 $aClassPlaceIDs = chksql($this->oDB->getCol($sSQL));
1613                             }
1614
1615                             if (!$aSearch['sOperator'] || $aSearch['sOperator'] == 'near') { // & in
1616                                 $sClassTable = 'place_classtype_'.$aSearch['sClass'].'_'.$aSearch['sType'];
1617                                 $sSQL = "SELECT count(*) FROM pg_tables ";
1618                                 $sSQL .= "WHERE tablename = '$sClassTable'";
1619                                 $bCacheTable = chksql($this->oDB->getOne($sSQL));
1620
1621                                 $sSQL = "SELECT min(rank_search) FROM placex WHERE place_id in ($sPlaceIDs)";
1622
1623                                 if (CONST_Debug) var_dump($sSQL);
1624                                 $this->iMaxRank = ((int)chksql($this->oDB->getOne($sSQL)));
1625
1626                                 // For state / country level searches the normal radius search doesn't work very well
1627                                 $sPlaceGeom = false;
1628                                 if ($this->iMaxRank < 9 && $bCacheTable) {
1629                                     // Try and get a polygon to search in instead
1630                                     $sSQL = "SELECT geometry ";
1631                                     $sSQL .= " FROM placex";
1632                                     $sSQL .= " WHERE place_id in ($sPlaceIDs)";
1633                                     $sSQL .= "   AND rank_search < $this->iMaxRank + 5";
1634                                     $sSQL .= "   AND ST_Geometrytype(geometry) in ('ST_Polygon','ST_MultiPolygon')";
1635                                     $sSQL .= " ORDER BY rank_search ASC ";
1636                                     $sSQL .= " LIMIT 1";
1637                                     if (CONST_Debug) var_dump($sSQL);
1638                                     $sPlaceGeom = chksql($this->oDB->getOne($sSQL));
1639                                 }
1640
1641                                 if ($sPlaceGeom) {
1642                                     $sPlaceIDs = false;
1643                                 } else {
1644                                     $this->iMaxRank += 5;
1645                                     $sSQL = "SELECT place_id FROM placex WHERE place_id in ($sPlaceIDs) and rank_search < $this->iMaxRank";
1646                                     if (CONST_Debug) var_dump($sSQL);
1647                                     $aPlaceIDs = chksql($this->oDB->getCol($sSQL));
1648                                     $sPlaceIDs = join(',', $aPlaceIDs);
1649                                 }
1650
1651                                 if ($sPlaceIDs || $sPlaceGeom) {
1652                                     $fRange = 0.01;
1653                                     if ($bCacheTable) {
1654                                         // More efficient - can make the range bigger
1655                                         $fRange = 0.05;
1656
1657                                         $sOrderBySQL = '';
1658                                         if ($oNearPoint) {
1659                                             $sOrderBySQL = $oNearPoint->distanceSQL('l.centroid');
1660                                         } elseif ($sPlaceIDs) {
1661                                             $sOrderBySQL = "ST_Distance(l.centroid, f.geometry)";
1662                                         } elseif ($sPlaceGeom) {
1663                                             $sOrderBySQL = "ST_Distance(st_centroid('".$sPlaceGeom."'), l.centroid)";
1664                                         }
1665
1666                                         $sSQL = "select distinct i.place_id".($sOrderBySQL?', i.order_term':'')." from (";
1667                                         $sSQL .= "select l.place_id".($sOrderBySQL?','.$sOrderBySQL.' as order_term':'')." from ".$sClassTable." as l";
1668                                         if ($sCountryCodesSQL) $sSQL .= " join placex as lp using (place_id)";
1669                                         if ($sPlaceIDs) {
1670                                             $sSQL .= ",placex as f where ";
1671                                             $sSQL .= "f.place_id in ($sPlaceIDs) and ST_DWithin(l.centroid, f.centroid, $fRange) ";
1672                                         }
1673                                         if ($sPlaceGeom) {
1674                                             $sSQL .= " where ";
1675                                             $sSQL .= "ST_Contains('".$sPlaceGeom."', l.centroid) ";
1676                                         }
1677                                         if (sizeof($this->aExcludePlaceIDs)) {
1678                                             $sSQL .= " and l.place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1679                                         }
1680                                         if ($sCountryCodesSQL) $sSQL .= " and lp.country_code in ($sCountryCodesSQL)";
1681                                         $sSQL .= 'limit 300) i ';
1682                                         if ($sOrderBySQL) $sSQL .= "order by order_term asc";
1683                                         if ($this->iOffset) $sSQL .= " offset $this->iOffset";
1684                                         $sSQL .= " limit $this->iLimit";
1685                                         if (CONST_Debug) var_dump($sSQL);
1686                                         $aClassPlaceIDs = array_merge($aClassPlaceIDs, chksql($this->oDB->getCol($sSQL)));
1687                                     } else {
1688                                         if ($aSearch['oNear']) {
1689                                             $fRange = $aSearch['oNear']->radius();
1690                                         }
1691
1692                                         $sOrderBySQL = '';
1693                                         if ($oNearPoint) {
1694                                             $sOrderBySQL = $oNearPoint->distanceSQL('l.geometry');
1695                                         } else {
1696                                             $sOrderBySQL = "ST_Distance(l.geometry, f.geometry)";
1697                                         }
1698
1699                                         $sSQL = "SELECT distinct l.place_id".($sOrderBySQL?','.$sOrderBySQL:'');
1700                                         $sSQL .= " FROM placex as l, placex as f ";
1701                                         $sSQL .= " WHERE f.place_id in ($sPlaceIDs) ";
1702                                         $sSQL .= "  AND ST_DWithin(l.geometry, f.centroid, $fRange) ";
1703                                         $sSQL .= "  AND l.class='".$aSearch['sClass']."' ";
1704                                         $sSQL .= "  AND l.type='".$aSearch['sType']."' ";
1705                                         if (sizeof($this->aExcludePlaceIDs)) {
1706                                             $sSQL .= " AND l.place_id not in (".join(',', $this->aExcludePlaceIDs).")";
1707                                         }
1708                                         if ($sCountryCodesSQL) $sSQL .= " AND l.country_code in ($sCountryCodesSQL)";
1709                                         if ($sOrderBySQL) $sSQL .= "ORDER BY ".$sOrderBySQL." ASC";
1710                                         if ($this->iOffset) $sSQL .= " OFFSET $this->iOffset";
1711                                         $sSQL .= " limit $this->iLimit";
1712                                         if (CONST_Debug) var_dump($sSQL);
1713                                         $aClassPlaceIDs = array_merge($aClassPlaceIDs, chksql($this->oDB->getCol($sSQL)));
1714                                     }
1715                                 }
1716                             }
1717                             $aPlaceIDs = $aClassPlaceIDs;
1718                         }
1719                     }
1720
1721                     if (CONST_Debug) {
1722                         echo "<br><b>Place IDs:</b> ";
1723                         var_Dump($aPlaceIDs);
1724                     }
1725
1726                     if (sizeof($aPlaceIDs) && $aSearch['sPostcode']) {
1727                         $sSQL = 'SELECT place_id FROM placex';
1728                         $sSQL .= ' WHERE place_id in ('.join(',', $aPlaceIDs).')';
1729                         $sSQL .= " AND postcode = '".pg_escape_string($aSearch['sPostcode'])."'";
1730                         if (CONST_Debug) var_dump($sSQL);
1731                         $aFilteredPlaceIDs = chksql($this->oDB->getCol($sSQL));
1732                         if ($aFilteredPlaceIDs) {
1733                             $aPlaceIDs = $aFilteredPlaceIDs;
1734                             if (CONST_Debug) {
1735                                 echo "<br><b>Place IDs after postcode filtering:</b> ";
1736                                 var_Dump($aPlaceIDs);
1737                             }
1738                         }
1739                     }
1740
1741                     foreach ($aPlaceIDs as $iPlaceID) {
1742                         // array for placeID => -1 | Tiger housenumber
1743                         $aResultPlaceIDs[$iPlaceID] = $searchedHousenumber;
1744                     }
1745                     if ($iQueryLoop > 20) break;
1746                 }
1747
1748                 if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs) && ($this->iMinAddressRank != 0 || $this->iMaxAddressRank != 30)) {
1749                     // Need to verify passes rank limits before dropping out of the loop (yuk!)
1750                     // reduces the number of place ids, like a filter
1751                     // rank_address is 30 for interpolated housenumbers
1752                     $sWherePlaceId = 'WHERE place_id in (';
1753                     $sWherePlaceId .= join(',', array_keys($aResultPlaceIDs)).') ';
1754
1755                     $sSQL = "SELECT place_id ";
1756                     $sSQL .= "FROM placex ".$sWherePlaceId;
1757                     $sSQL .= "  AND (";
1758                     $sSQL .= "         placex.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
1759                     if (14 >= $this->iMinAddressRank && 14 <= $this->iMaxAddressRank) {
1760                         $sSQL .= "     OR (extratags->'place') = 'city'";
1761                     }
1762                     if ($this->aAddressRankList) {
1763                         $sSQL .= "     OR placex.rank_address in (".join(',', $this->aAddressRankList).")";
1764                     }
1765                     $sSQL .= "  ) UNION ";
1766                     $sSQL .= " SELECT place_id FROM location_postcode lp ".$sWherePlaceId;
1767                     $sSQL .= "  AND (lp.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
1768                     if ($this->aAddressRankList) {
1769                         $sSQL .= "     OR lp.rank_address in (".join(',', $this->aAddressRankList).")";
1770                     }
1771                     $sSQL .= ") ";
1772                     if (CONST_Use_US_Tiger_Data && $this->iMaxAddressRank == 30) {
1773                         $sSQL .= "UNION ";
1774                         $sSQL .= "  SELECT place_id ";
1775                         $sSQL .= "  FROM location_property_tiger ".$sWherePlaceId;
1776                     }
1777                     if ($this->iMaxAddressRank == 30) {
1778                         $sSQL .= "UNION ";
1779                         $sSQL .= "  SELECT place_id ";
1780                         $sSQL .= "  FROM location_property_osmline ".$sWherePlaceId;
1781                     }
1782                     if (CONST_Debug) var_dump($sSQL);
1783                     $aFilteredPlaceIDs = chksql($this->oDB->getCol($sSQL));
1784                     $tempIDs = array();
1785                     foreach ($aFilteredPlaceIDs as $placeID) {
1786                         $tempIDs[$placeID] = $aResultPlaceIDs[$placeID];  //assign housenumber to placeID
1787                     }
1788                     $aResultPlaceIDs = $tempIDs;
1789                 }
1790
1791                 //exit;
1792                 if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs)) break;
1793                 if ($iGroupLoop > 4) break;
1794                 if ($iQueryLoop > 30) break;
1795             }
1796
1797             // Did we find anything?
1798             if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs)) {
1799                 $aSearchResults = $this->getDetails($aResultPlaceIDs);
1800             }
1801         } else {
1802             // Just interpret as a reverse geocode
1803             $oReverse = new ReverseGeocode($this->oDB);
1804             $oReverse->setZoom(18);
1805
1806             $aLookup = $oReverse->lookup(
1807                 $oNearPoint->lat(),
1808                 $oNearPoint->lon(),
1809                 false
1810             );
1811
1812             if (CONST_Debug) var_dump("Reverse search", $aLookup);
1813
1814             if ($aLookup['place_id']) {
1815                 $aSearchResults = $this->getDetails(array($aLookup['place_id'] => -1));
1816                 $aResultPlaceIDs[$aLookup['place_id']] = -1;
1817             } else {
1818                 $aSearchResults = array();
1819             }
1820         }
1821
1822         // No results? Done
1823         if (!sizeof($aSearchResults)) {
1824             if ($this->bFallback) {
1825                 if ($this->fallbackStructuredQuery()) {
1826                     return $this->lookup();
1827                 }
1828             }
1829
1830             return array();
1831         }
1832
1833         $aClassType = getClassTypesWithImportance();
1834         $aRecheckWords = preg_split('/\b[\s,\\-]*/u', $sQuery);
1835         foreach ($aRecheckWords as $i => $sWord) {
1836             if (!preg_match('/[\pL\pN]/', $sWord)) unset($aRecheckWords[$i]);
1837         }
1838
1839         if (CONST_Debug) {
1840             echo '<i>Recheck words:<\i>';
1841             var_dump($aRecheckWords);
1842         }
1843
1844         $oPlaceLookup = new PlaceLookup($this->oDB);
1845         $oPlaceLookup->setIncludePolygonAsPoints($this->bIncludePolygonAsPoints);
1846         $oPlaceLookup->setIncludePolygonAsText($this->bIncludePolygonAsText);
1847         $oPlaceLookup->setIncludePolygonAsGeoJSON($this->bIncludePolygonAsGeoJSON);
1848         $oPlaceLookup->setIncludePolygonAsKML($this->bIncludePolygonAsKML);
1849         $oPlaceLookup->setIncludePolygonAsSVG($this->bIncludePolygonAsSVG);
1850         $oPlaceLookup->setPolygonSimplificationThreshold($this->fPolygonSimplificationThreshold);
1851
1852         foreach ($aSearchResults as $iResNum => $aResult) {
1853             // Default
1854             $fDiameter = getResultDiameter($aResult);
1855
1856             $aOutlineResult = $oPlaceLookup->getOutlines($aResult['place_id'], $aResult['lon'], $aResult['lat'], $fDiameter/2);
1857             if ($aOutlineResult) {
1858                 $aResult = array_merge($aResult, $aOutlineResult);
1859             }
1860
1861             if ($aResult['extra_place'] == 'city') {
1862                 $aResult['class'] = 'place';
1863                 $aResult['type'] = 'city';
1864                 $aResult['rank_search'] = 16;
1865             }
1866
1867             // Is there an icon set for this type of result?
1868             if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['icon'])
1869                 && $aClassType[$aResult['class'].':'.$aResult['type']]['icon']
1870             ) {
1871                 $aResult['icon'] = CONST_Website_BaseURL.'images/mapicons/'.$aClassType[$aResult['class'].':'.$aResult['type']]['icon'].'.p.20.png';
1872             }
1873
1874             if (isset($aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'])
1875                 && $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label']
1876             ) {
1877                 $aResult['label'] = $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'];
1878             } elseif (isset($aClassType[$aResult['class'].':'.$aResult['type']]['label'])
1879                 && $aClassType[$aResult['class'].':'.$aResult['type']]['label']
1880             ) {
1881                 $aResult['label'] = $aClassType[$aResult['class'].':'.$aResult['type']]['label'];
1882             }
1883             // if tag '&addressdetails=1' is set in query
1884             if ($this->bIncludeAddressDetails) {
1885                 // getAddressDetails() is defined in lib.php and uses the SQL function get_addressdata in functions.sql
1886                 $aResult['address'] = getAddressDetails($this->oDB, $sLanguagePrefArraySQL, $aResult['place_id'], $aResult['country_code'], $aResultPlaceIDs[$aResult['place_id']]);
1887                 if ($aResult['extra_place'] == 'city' && !isset($aResult['address']['city'])) {
1888                     $aResult['address'] = array_merge(array('city' => array_values($aResult['address'])[0]), $aResult['address']);
1889                 }
1890             }
1891
1892             if ($this->bIncludeExtraTags) {
1893                 if ($aResult['extra']) {
1894                     $aResult['sExtraTags'] = json_decode($aResult['extra']);
1895                 } else {
1896                     $aResult['sExtraTags'] = (object) array();
1897                 }
1898             }
1899
1900             if ($this->bIncludeNameDetails) {
1901                 if ($aResult['names']) {
1902                     $aResult['sNameDetails'] = json_decode($aResult['names']);
1903                 } else {
1904                     $aResult['sNameDetails'] = (object) array();
1905                 }
1906             }
1907
1908             // Adjust importance for the number of exact string matches in the result
1909             $aResult['importance'] = max(0.001, $aResult['importance']);
1910             $iCountWords = 0;
1911             $sAddress = $aResult['langaddress'];
1912             foreach ($aRecheckWords as $i => $sWord) {
1913                 if (stripos($sAddress, $sWord)!==false) {
1914                     $iCountWords++;
1915                     if (preg_match("/(^|,)\s*".preg_quote($sWord, '/')."\s*(,|$)/", $sAddress)) $iCountWords += 0.1;
1916                 }
1917             }
1918
1919             $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
1920
1921             $aResult['name'] = $aResult['langaddress'];
1922             // secondary ordering (for results with same importance (the smaller the better):
1923             // - approximate importance of address parts
1924             $aResult['foundorder'] = -$aResult['addressimportance']/10;
1925             // - number of exact matches from the query
1926             if (isset($this->exactMatchCache[$aResult['place_id']])) {
1927                 $aResult['foundorder'] -= $this->exactMatchCache[$aResult['place_id']];
1928             } elseif (isset($this->exactMatchCache[$aResult['parent_place_id']])) {
1929                 $aResult['foundorder'] -= $this->exactMatchCache[$aResult['parent_place_id']];
1930             }
1931             // - importance of the class/type
1932             if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['importance'])
1933                 && $aClassType[$aResult['class'].':'.$aResult['type']]['importance']
1934             ) {
1935                 $aResult['foundorder'] += 0.0001 * $aClassType[$aResult['class'].':'.$aResult['type']]['importance'];
1936             } else {
1937                 $aResult['foundorder'] += 0.01;
1938             }
1939             if (CONST_Debug) var_dump($aResult);
1940             $aSearchResults[$iResNum] = $aResult;
1941         }
1942         uasort($aSearchResults, 'byImportance');
1943
1944         $aOSMIDDone = array();
1945         $aClassTypeNameDone = array();
1946         $aToFilter = $aSearchResults;
1947         $aSearchResults = array();
1948
1949         $bFirst = true;
1950         foreach ($aToFilter as $iResNum => $aResult) {
1951             $this->aExcludePlaceIDs[$aResult['place_id']] = $aResult['place_id'];
1952             if ($bFirst) {
1953                 $fLat = $aResult['lat'];
1954                 $fLon = $aResult['lon'];
1955                 if (isset($aResult['zoom'])) $iZoom = $aResult['zoom'];
1956                 $bFirst = false;
1957             }
1958             if (!$this->bDeDupe || (!isset($aOSMIDDone[$aResult['osm_type'].$aResult['osm_id']])
1959                 && !isset($aClassTypeNameDone[$aResult['osm_type'].$aResult['class'].$aResult['type'].$aResult['name'].$aResult['admin_level']]))
1960             ) {
1961                 $aOSMIDDone[$aResult['osm_type'].$aResult['osm_id']] = true;
1962                 $aClassTypeNameDone[$aResult['osm_type'].$aResult['class'].$aResult['type'].$aResult['name'].$aResult['admin_level']] = true;
1963                 $aSearchResults[] = $aResult;
1964             }
1965
1966             // Absolute limit on number of results
1967             if (sizeof($aSearchResults) >= $this->iFinalLimit) break;
1968         }
1969
1970         return $aSearchResults;
1971     } // end lookup()
1972 } // end class