lib/Geocode.php

   1 <?php
   2         class Geocode
   3         {
   4                 protected $oDB;
   5
   6                 protected $aLangPrefOrder = array();
   7
   8                 protected $bIncludeAddressDetails = false;
   9
  10                 protected $bIncludePolygonAsPoints = false;
  11                 protected $bIncludePolygonAsText = false;
  12                 protected $bIncludePolygonAsGeoJSON = false;
  13                 protected $bIncludePolygonAsKML = false;
  14                 protected $bIncludePolygonAsSVG = false;
  15
  16                 protected $aExcludePlaceIDs = array();
  17                 protected $bDeDupe = true;
  18                 protected $bReverseInPlan = false;
  19
  20                 protected $iLimit = 20;
  21                 protected $iFinalLimit = 10;
  22                 protected $iOffset = 0;
  23                 protected $bFallback = false;
  24
  25                 protected $aCountryCodes = false;
  26                 protected $aNearPoint = false;
  27
  28                 protected $bBoundedSearch = false;
  29                 protected $aViewBox = false;
  30                 protected $sViewboxSmallSQL = false;
  31                 protected $sViewboxLargeSQL = false;
  32                 protected $aRoutePoints = false;
  33
  34                 protected $iMaxRank = 20;
  35                 protected $iMinAddressRank = 0;
  36                 protected $iMaxAddressRank = 30;
  37                 protected $aAddressRankList = array();
  38                 protected $exactMatchCache = array();
  39
  40                 protected $sAllowedTypesSQLList = false;
  41
  42                 protected $sQuery = false;
  43                 protected $aStructuredQuery = false;
  44
  45                 function Geocode(&$oDB)
  46                 {
  47                         $this->oDB =& $oDB;
  48                 }
  49
  50                 function setReverseInPlan($bReverse)
  51                 {
  52                         $this->bReverseInPlan = $bReverse;
  53                 }
  54
  55                 function setLanguagePreference($aLangPref)
  56                 {
  57                         $this->aLangPrefOrder = $aLangPref;
  58                 }
  59
  60                 function setIncludeAddressDetails($bAddressDetails = true)
  61                 {
  62                         $this->bIncludeAddressDetails = (bool)$bAddressDetails;
  63                 }
  64
  65                 function getIncludeAddressDetails()
  66                 {
  67                         return $this->bIncludeAddressDetails;
  68                 }
  69
  70                 function setIncludePolygonAsPoints($b = true)
  71                 {
  72                         $this->bIncludePolygonAsPoints = $b;
  73                 }
  74
  75                 function getIncludePolygonAsPoints()
  76                 {
  77                         return $this->bIncludePolygonAsPoints;
  78                 }
  79
  80                 function setIncludePolygonAsText($b = true)
  81                 {
  82                         $this->bIncludePolygonAsText = $b;
  83                 }
  84
  85                 function getIncludePolygonAsText()
  86                 {
  87                         return $this->bIncludePolygonAsText;
  88                 }
  89
  90                 function setIncludePolygonAsGeoJSON($b = true)
  91                 {
  92                         $this->bIncludePolygonAsGeoJSON = $b;
  93                 }
  94
  95                 function setIncludePolygonAsKML($b = true)
  96                 {
  97                         $this->bIncludePolygonAsKML = $b;
  98                 }
  99
 100                 function setIncludePolygonAsSVG($b = true)
 101                 {
 102                         $this->bIncludePolygonAsSVG = $b;
 103                 }
 104
 105                 function setDeDupe($bDeDupe = true)
 106                 {
 107                         $this->bDeDupe = (bool)$bDeDupe;
 108                 }
 109
 110                 function setLimit($iLimit = 10)
 111                 {
 112                         if ($iLimit > 50) $iLimit = 50;
 113                         if ($iLimit < 1) $iLimit = 1;
 114
 115                         $this->iFinalLimit = $iLimit;
 116                         $this->iLimit = $this->iFinalLimit + min($this->iFinalLimit, 10);
 117                 }
 118
 119                 function setOffset($iOffset = 0)
 120                 {
 121                         $this->iOffset = $iOffset;
 122                 }
 123
 124                 function setFallback($bFallback = true)
 125                 {
 126                         $this->bFallback = (bool)$bFallback;
 127                 }
 128
 129                 function setExcludedPlaceIDs($a)
 130                 {
 131                         // TODO: force to int
 132                         $this->aExcludePlaceIDs = $a;
 133                 }
 134
 135                 function getExcludedPlaceIDs()
 136                 {
 137                         return $this->aExcludePlaceIDs;
 138                 }
 139
 140                 function setBounded($bBoundedSearch = true)
 141                 {
 142                         $this->bBoundedSearch = (bool)$bBoundedSearch;
 143                 }
 144
 145                 function setViewBox($fLeft, $fBottom, $fRight, $fTop)
 146                 {
 147                         $this->aViewBox = array($fLeft, $fBottom, $fRight, $fTop);
 148                 }
 149
 150                 function getViewBoxString()
 151                 {
 152                         if (!$this->aViewBox) return null;
 153                         return $this->aViewBox[0].','.$this->aViewBox[3].','.$this->aViewBox[2].','.$this->aViewBox[1];
 154                 }
 155
 156                 function setRoute($aRoutePoints)
 157                 {
 158                         $this->aRoutePoints = $aRoutePoints;
 159                 }
 160
 161                 function setFeatureType($sFeatureType)
 162                 {
 163                         switch($sFeatureType)
 164                         {
 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                                 $this->setRankRange(8, 20);
 176                                 break;
 177                         }
 178                 }
 179
 180                 function setRankRange($iMin, $iMax)
 181                 {
 182                         $this->iMinAddressRank = (int)$iMin;
 183                         $this->iMaxAddressRank = (int)$iMax;
 184                 }
 185
 186                 function setNearPoint($aNearPoint, $fRadiusDeg = 0.1)
 187                 {
 188                         $this->aNearPoint = array((float)$aNearPoint[0], (float)$aNearPoint[1], (float)$fRadiusDeg);
 189                 }
 190
 191                 function setCountryCodesList($aCountryCodes)
 192                 {
 193                         $this->aCountryCodes = $aCountryCodes;
 194                 }
 195
 196                 function setQuery($sQueryString)
 197                 {
 198                         $this->sQuery = $sQueryString;
 199                         $this->aStructuredQuery = false;
 200                 }
 201
 202                 function getQueryString()
 203                 {
 204                         return $this->sQuery;
 205                 }
 206
 207
 208                 function loadParamArray($aParams)
 209                 {
 210                         if (isset($aParams['addressdetails'])) $this->bIncludeAddressDetails = (bool)$aParams['addressdetails'];
 211                         if (isset($aParams['bounded'])) $this->bBoundedSearch = (bool)$aParams['bounded'];
 212                         if (isset($aParams['dedupe'])) $this->bDeDupe = (bool)$aParams['dedupe'];
 213
 214                         if (isset($aParams['limit'])) $this->setLimit((int)$aParams['limit']);
 215                         if (isset($aParams['offset'])) $this->iOffset = (int)$aParams['offset'];
 216
 217                         if (isset($aParams['fallback'])) $this->bFallback = (bool)$aParams['fallback'];
 218
 219                         // List of excluded Place IDs - used for more acurate pageing
 220                         if (isset($aParams['exclude_place_ids']) && $aParams['exclude_place_ids'])
 221                         {
 222                                 foreach(explode(',',$aParams['exclude_place_ids']) as $iExcludedPlaceID)
 223                                 {
 224                                         $iExcludedPlaceID = (int)$iExcludedPlaceID;
 225                                         if ($iExcludedPlaceID) $aExcludePlaceIDs[$iExcludedPlaceID] = $iExcludedPlaceID;
 226                                 }
 227                                 $this->aExcludePlaceIDs = $aExcludePlaceIDs;
 228                         }
 229
 230                         // Only certain ranks of feature
 231                         if (isset($aParams['featureType'])) $this->setFeatureType($aParams['featureType']);
 232                         if (isset($aParams['featuretype'])) $this->setFeatureType($aParams['featuretype']);
 233
 234                         // Country code list
 235                         if (isset($aParams['countrycodes']))
 236                         {
 237                                 $aCountryCodes = array();
 238                                 foreach(explode(',',$aParams['countrycodes']) as $sCountryCode)
 239                                 {
 240                                         if (preg_match('/^[a-zA-Z][a-zA-Z]$/', $sCountryCode))
 241                                         {
 242                                                 $aCountryCodes[] = strtolower($sCountryCode);
 243                                         }
 244                                 }
 245                                 $this->aCountryCodes = $aCountryCodes;
 246                         }
 247
 248                         if (isset($aParams['viewboxlbrt']) && $aParams['viewboxlbrt'])
 249                         {
 250                                 $aCoOrdinatesLBRT = explode(',',$aParams['viewboxlbrt']);
 251                                 $this->setViewBox($aCoOrdinatesLBRT[0], $aCoOrdinatesLBRT[1], $aCoOrdinatesLBRT[2], $aCoOrdinatesLBRT[3]);
 252                         }
 253                         else if (isset($aParams['viewbox']) && $aParams['viewbox'])
 254                         {
 255                                 $aCoOrdinatesLTRB = explode(',',$aParams['viewbox']);
 256                                 $this->setViewBox($aCoOrdinatesLTRB[0], $aCoOrdinatesLTRB[3], $aCoOrdinatesLTRB[2], $aCoOrdinatesLTRB[1]);
 257                         }
 258
 259                         if (isset($aParams['route']) && $aParams['route'] && isset($aParams['routewidth']) && $aParams['routewidth'])
 260                         {
 261                                 $aPoints = explode(',',$aParams['route']);
 262                                 if (sizeof($aPoints) % 2 != 0)
 263                                 {
 264                                         userError("Uneven number of points");
 265                                         exit;
 266                                 }
 267                                 $fPrevCoord = false;
 268                                 $aRoute = array();
 269                                 foreach($aPoints as $i => $fPoint)
 270                                 {
 271                                         if ($i%2)
 272                                         {
 273                                                 $aRoute[] = array((float)$fPoint, $fPrevCoord);
 274                                         }
 275                                         else
 276                                         {
 277                                                 $fPrevCoord = (float)$fPoint;
 278                                         }
 279                                 }
 280                                 $this->aRoutePoints = $aRoute;
 281                         }
 282                 }
 283
 284                 function setQueryFromParams($aParams)
 285                 {
 286                         // Search query
 287                         $sQuery = (isset($aParams['q'])?trim($aParams['q']):'');
 288                         if (!$sQuery)
 289                         {
 290                                 $this->setStructuredQuery(@$aParams['amenity'], @$aParams['street'], @$aParams['city'], @$aParams['county'], @$aParams['state'], @$aParams['country'], @$aParams['postalcode']);
 291                                 $this->setReverseInPlan(false);
 292                         }
 293                         else
 294                         {
 295                                 $this->setQuery($sQuery);
 296                         }
 297                 }
 298
 299                 function loadStructuredAddressElement($sValue, $sKey, $iNewMinAddressRank, $iNewMaxAddressRank, $aItemListValues)
 300                 {
 301                         $sValue = trim($sValue);
 302                         if (!$sValue) return false;
 303                         $this->aStructuredQuery[$sKey] = $sValue;
 304                         if ($this->iMinAddressRank == 0 && $this->iMaxAddressRank == 30)
 305                         {
 306                                 $this->iMinAddressRank = $iNewMinAddressRank;
 307                                 $this->iMaxAddressRank = $iNewMaxAddressRank;
 308                         }
 309                         if ($aItemListValues) $this->aAddressRankList = array_merge($this->aAddressRankList, $aItemListValues);
 310                         return true;
 311                 }
 312
 313                 function setStructuredQuery($sAmentiy = false, $sStreet = false, $sCity = false, $sCounty = false, $sState = false, $sCountry = false, $sPostalCode = false)
 314                 {
 315                         $this->sQuery = false;
 316
 317                         // Reset
 318                         $this->iMinAddressRank = 0;
 319                         $this->iMaxAddressRank = 30;
 320                         $this->aAddressRankList = array();
 321
 322                         $this->aStructuredQuery = array();
 323                         $this->sAllowedTypesSQLList = '';
 324
 325                         $this->loadStructuredAddressElement($sAmentiy, 'amenity', 26, 30, false);
 326                         $this->loadStructuredAddressElement($sStreet, 'street', 26, 30, false);
 327                         $this->loadStructuredAddressElement($sCity, 'city', 14, 24, false);
 328                         $this->loadStructuredAddressElement($sCounty, 'county', 9, 13, false);
 329                         $this->loadStructuredAddressElement($sState, 'state', 8, 8, false);
 330                         $this->loadStructuredAddressElement($sPostalCode, 'postalcode' , 5, 11, array(5, 11));
 331                         $this->loadStructuredAddressElement($sCountry, 'country', 4, 4, false);
 332
 333                         if (sizeof($this->aStructuredQuery) > 0)
 334                         {
 335                                 $this->sQuery = join(', ', $this->aStructuredQuery);
 336                                 if ($this->iMaxAddressRank < 30)
 337                                 {
 338                                         $sAllowedTypesSQLList = '(\'place\',\'boundary\')';
 339                                 }
 340                         }
 341                 }
 342
 343                 function fallbackStructuredQuery()
 344                 {
 345                         if (!$this->aStructuredQuery) return false;
 346
 347                         $aParams = $this->aStructuredQuery;
 348
 349                         if (sizeof($aParams) == 1) return false;
 350
 351                         $aOrderToFallback = array('postalcode', 'street', 'city', 'county', 'state');
 352
 353                         foreach($aOrderToFallback as $sType)
 354                         {
 355                                 if (isset($aParams[$sType]))
 356                                 {
 357                                         unset($aParams[$sType]);
 358                                         $this->setStructuredQuery(@$aParams['amenity'], @$aParams['street'], @$aParams['city'], @$aParams['county'], @$aParams['state'], @$aParams['country'], @$aParams['postalcode']);
 359                                         return true;
 360                                 }
 361                         }
 362
 363                         return false;
 364                 }
 365
 366                 function getDetails($aPlaceIDs)
 367                 {
 368                         if (sizeof($aPlaceIDs) == 0)  return array();
 369
 370                         $sLanguagePrefArraySQL = "ARRAY[".join(',',array_map("getDBQuoted",$this->aLangPrefOrder))."]";
 371
 372                         // Get the details for display (is this a redundant extra step?)
 373                         $sPlaceIDs = join(',',$aPlaceIDs);
 374
 375                         $sImportanceSQL = '';
 376                         if ($this->sViewboxSmallSQL) $sImportanceSQL .= " case when ST_Contains($this->sViewboxSmallSQL, ST_Collect(centroid)) THEN 1 ELSE 0.75 END * ";
 377                         if ($this->sViewboxLargeSQL) $sImportanceSQL .= " case when ST_Contains($this->sViewboxLargeSQL, ST_Collect(centroid)) THEN 1 ELSE 0.75 END * ";
 378
 379                         $sSQL = "select osm_type,osm_id,class,type,admin_level,rank_search,rank_address,min(place_id) as place_id, min(parent_place_id) as parent_place_id, calculated_country_code as country_code,";
 380                         $sSQL .= "get_address_by_language(place_id, $sLanguagePrefArraySQL) as langaddress,";
 381                         $sSQL .= "get_name_by_language(name, $sLanguagePrefArraySQL) as placename,";
 382                         $sSQL .= "get_name_by_language(name, ARRAY['ref']) as ref,";
 383                         $sSQL .= "avg(ST_X(centroid)) as lon,avg(ST_Y(centroid)) as lat, ";
 384                         $sSQL .= $sImportanceSQL."coalesce(importance,0.75-(rank_search::float/40)) as importance, ";
 385                         $sSQL .= "(select max(p.importance*(p.rank_address+2)) from place_addressline s, placex p where s.place_id = min(CASE WHEN placex.rank_search < 28 THEN placex.place_id ELSE placex.parent_place_id END) and p.place_id = s.address_place_id and s.isaddress and p.importance is not null) as addressimportance, ";
 386                         $sSQL .= "(extratags->'place') as extra_place ";
 387                         $sSQL .= "from placex where place_id in ($sPlaceIDs) ";
 388                         $sSQL .= "and (placex.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
 389                         if (14 >= $this->iMinAddressRank && 14 <= $this->iMaxAddressRank) $sSQL .= " OR (extratags->'place') = 'city'";
 390                         if ($this->aAddressRankList) $sSQL .= " OR placex.rank_address in (".join(',',$this->aAddressRankList).")";
 391                         $sSQL .= ") ";
 392                         if ($this->sAllowedTypesSQLList) $sSQL .= "and placex.class in $this->sAllowedTypesSQLList ";
 393                         $sSQL .= "and linked_place_id is null ";
 394                         $sSQL .= "group by osm_type,osm_id,class,type,admin_level,rank_search,rank_address,calculated_country_code,importance";
 395                         if (!$this->bDeDupe) $sSQL .= ",place_id";
 396                         $sSQL .= ",langaddress ";
 397                         $sSQL .= ",placename ";
 398                         $sSQL .= ",ref ";
 399                         $sSQL .= ",extratags->'place' ";
 400
 401                         if (30 >= $this->iMinAddressRank && 30 <= $this->iMaxAddressRank)
 402                         {
 403                                 $sSQL .= " union ";
 404                                 $sSQL .= "select 'T' as osm_type,place_id as osm_id,'place' as class,'house' as type,null as admin_level,30 as rank_search,30 as rank_address,min(place_id) as place_id, min(parent_place_id) as parent_place_id,'us' as country_code,";
 405                                 $sSQL .= "get_address_by_language(place_id, $sLanguagePrefArraySQL) as langaddress,";
 406                                 $sSQL .= "null as placename,";
 407                                 $sSQL .= "null as ref,";
 408                                 $sSQL .= "avg(ST_X(centroid)) as lon,avg(ST_Y(centroid)) as lat, ";
 409                                 $sSQL .= $sImportanceSQL."-1.15 as importance, ";
 410                                 $sSQL .= "(select max(p.importance*(p.rank_address+2)) from place_addressline s, placex p where s.place_id = min(location_property_tiger.parent_place_id) and p.place_id = s.address_place_id and s.isaddress and p.importance is not null) as addressimportance, ";
 411                                 $sSQL .= "null as extra_place ";
 412                                 $sSQL .= "from location_property_tiger where place_id in ($sPlaceIDs) ";
 413                                 $sSQL .= "and 30 between $this->iMinAddressRank and $this->iMaxAddressRank ";
 414                                 $sSQL .= "group by place_id";
 415                                 if (!$this->bDeDupe) $sSQL .= ",place_id ";
 416                                 $sSQL .= " union ";
 417                                 $sSQL .= "select 'L' as osm_type,place_id as osm_id,'place' as class,'house' as type,null as admin_level,30 as rank_search,30 as rank_address,min(place_id) as place_id, min(parent_place_id) as parent_place_id,'us' as country_code,";
 418                                 $sSQL .= "get_address_by_language(place_id, $sLanguagePrefArraySQL) as langaddress,";
 419                                 $sSQL .= "null as placename,";
 420                                 $sSQL .= "null as ref,";
 421                                 $sSQL .= "avg(ST_X(centroid)) as lon,avg(ST_Y(centroid)) as lat, ";
 422                                 $sSQL .= $sImportanceSQL."-1.10 as importance, ";
 423                                 $sSQL .= "(select max(p.importance*(p.rank_address+2)) from place_addressline s, placex p where s.place_id = min(location_property_aux.parent_place_id) and p.place_id = s.address_place_id and s.isaddress and p.importance is not null) as addressimportance, ";
 424                                 $sSQL .= "null as extra_place ";
 425                                 $sSQL .= "from location_property_aux where place_id in ($sPlaceIDs) ";
 426                                 $sSQL .= "and 30 between $this->iMinAddressRank and $this->iMaxAddressRank ";
 427                                 $sSQL .= "group by place_id";
 428                                 if (!$this->bDeDupe) $sSQL .= ",place_id";
 429                                 $sSQL .= ",get_address_by_language(place_id, $sLanguagePrefArraySQL) ";
 430                         }
 431
 432                         $sSQL .= " order by importance desc";
 433                         if (CONST_Debug) { echo "<hr>"; var_dump($sSQL); }
 434                         $aSearchResults = $this->oDB->getAll($sSQL);
 435
 436                         if (PEAR::IsError($aSearchResults))
 437                         {
 438                                 failInternalError("Could not get details for place.", $sSQL, $aSearchResults);
 439                         }
 440
 441                         return $aSearchResults;
 442                 }
 443
 444                 /* Perform the actual query lookup.
 445
 446                         Returns an ordered list of results, each with the following fields:
 447                           osm_type: type of corresponding OSM object
 448                                                         N - node
 449                                                         W - way
 450                                                         R - relation
 451                                                         P - postcode (internally computed)
 452                           osm_id: id of corresponding OSM object
 453                           class: general object class (corresponds to tag key of primary OSM tag)
 454                           type: subclass of object (corresponds to tag value of primary OSM tag)
 455                           admin_level: see http://wiki.openstreetmap.org/wiki/Admin_level
 456                           rank_search: rank in search hierarchy
 457                                                         (see also http://wiki.openstreetmap.org/wiki/Nominatim/Development_overview#Country_to_street_level)
 458                           rank_address: rank in address hierarchy (determines orer in address)
 459                           place_id: internal key (may differ between different instances)
 460                           country_code: ISO country code
 461                           langaddress: localized full address
 462                           placename: localized name of object
 463                           ref: content of ref tag (if available)
 464                           lon: longitude
 465                           lat: latitude
 466                           importance: importance of place based on Wikipedia link count
 467                           addressimportance: cumulated importance of address elements
 468                           extra_place: type of place (for admin boundaries, if there is a place tag)
 469                           aBoundingBox: bounding Box
 470                           label: short description of the object class/type (English only)
 471                           name: full name (currently the same as langaddress)
 472                           foundorder: secondary ordering for places with same importance
 473                 */
 474                 function lookup()
 475                 {
 476                         if (!$this->sQuery && !$this->aStructuredQuery) return false;
 477
 478                         $sLanguagePrefArraySQL = "ARRAY[".join(',',array_map("getDBQuoted",$this->aLangPrefOrder))."]";
 479
 480                         $sCountryCodesSQL = false;
 481                         if ($this->aCountryCodes && sizeof($this->aCountryCodes))
 482                         {
 483                                 $sCountryCodesSQL = join(',', array_map('addQuotes', $this->aCountryCodes));
 484                         }
 485
 486                         $sQuery = $this->sQuery;
 487
 488                         // Conflicts between US state abreviations and various words for 'the' in different languages
 489                         if (isset($this->aLangPrefOrder['name:en']))
 490                         {
 491                                 $sQuery = preg_replace('/(^|,)\s*il\s*(,|$)/','\1illinois\2', $sQuery);
 492                                 $sQuery = preg_replace('/(^|,)\s*al\s*(,|$)/','\1alabama\2', $sQuery);
 493                                 $sQuery = preg_replace('/(^|,)\s*la\s*(,|$)/','\1louisiana\2', $sQuery);
 494                         }
 495
 496                         // View Box SQL
 497                         $sViewboxCentreSQL = false;
 498                         $bBoundingBoxSearch = false;
 499                         if ($this->aViewBox)
 500                         {
 501                                 $fHeight = $this->aViewBox[0]-$this->aViewBox[2];
 502                                 $fWidth = $this->aViewBox[1]-$this->aViewBox[3];
 503                                 $aBigViewBox[0] = $this->aViewBox[0] + $fHeight;
 504                                 $aBigViewBox[2] = $this->aViewBox[2] - $fHeight;
 505                                 $aBigViewBox[1] = $this->aViewBox[1] + $fWidth;
 506                                 $aBigViewBox[3] = $this->aViewBox[3] - $fWidth;
 507
 508                                 $this->sViewboxSmallSQL = "ST_SetSRID(ST_MakeBox2D(ST_Point(".(float)$this->aViewBox[0].",".(float)$this->aViewBox[1]."),ST_Point(".(float)$this->aViewBox[2].",".(float)$this->aViewBox[3].")),4326)";
 509                                 $this->sViewboxLargeSQL = "ST_SetSRID(ST_MakeBox2D(ST_Point(".(float)$aBigViewBox[0].",".(float)$aBigViewBox[1]."),ST_Point(".(float)$aBigViewBox[2].",".(float)$aBigViewBox[3].")),4326)";
 510                                 $bBoundingBoxSearch = $this->bBoundedSearch;
 511                         }
 512
 513                         // Route SQL
 514                         if ($this->aRoutePoints)
 515                         {
 516                                 $sViewboxCentreSQL = "ST_SetSRID('LINESTRING(";
 517                                 $bFirst = true;
 518                                 foreach($this->aRoutePoints as $aPoint)
 519                                 {
 520                                         if (!$bFirst) $sViewboxCentreSQL .= ",";
 521                                         $sViewboxCentreSQL .= $aPoint[0].' '.$aPoint[1];
 522                                         $bFirst = false;
 523                                 }
 524                                 $sViewboxCentreSQL .= ")'::geometry,4326)";
 525
 526                                 $sSQL = "select st_buffer(".$sViewboxCentreSQL.",".(float)($_GET['routewidth']/69).")";
 527                                 $this->sViewboxSmallSQL = $this->oDB->getOne($sSQL);
 528                                 if (PEAR::isError($this->sViewboxSmallSQL))
 529                                 {
 530                                         failInternalError("Could not get small viewbox.", $sSQL, $this->sViewboxSmallSQL);
 531                                 }
 532                                 $this->sViewboxSmallSQL = "'".$this->sViewboxSmallSQL."'::geometry";
 533
 534                                 $sSQL = "select st_buffer(".$sViewboxCentreSQL.",".(float)($_GET['routewidth']/30).")";
 535                                 $this->sViewboxLargeSQL = $this->oDB->getOne($sSQL);
 536                                 if (PEAR::isError($this->sViewboxLargeSQL))
 537                                 {
 538                                         failInternalError("Could not get large viewbox.", $sSQL, $this->sViewboxLargeSQL);
 539                                 }
 540                                 $this->sViewboxLargeSQL = "'".$this->sViewboxLargeSQL."'::geometry";
 541                                 $bBoundingBoxSearch = $this->bBoundedSearch;
 542                         }
 543
 544                         // Do we have anything that looks like a lat/lon pair?
 545                         if ( $aLooksLike = looksLikeLatLonPair($sQuery) ){
 546                                 $this->setNearPoint(array($aLooksLike['lat'], $aLooksLike['lon']));
 547                                 $sQuery = $aLooksLike['query'];
 548                         }
 549
 550                         $aSearchResults = array();
 551                         if ($sQuery || $this->aStructuredQuery)
 552                         {
 553                                 // Start with a blank search
 554                                 $aSearches = array(
 555                                         array('iSearchRank' => 0, 'iNamePhrase' => -1, 'sCountryCode' => false, 'aName'=>array(), 'aAddress'=>array(), 'aFullNameAddress'=>array(),
 556                                               'aNameNonSearch'=>array(), 'aAddressNonSearch'=>array(),
 557                                               'sOperator'=>'', 'aFeatureName' => array(), 'sClass'=>'', 'sType'=>'', 'sHouseNumber'=>'', 'fLat'=>'', 'fLon'=>'', 'fRadius'=>'')
 558                                 );
 559
 560                                 // Do we have a radius search?
 561                                 $sNearPointSQL = false;
 562                                 if ($this->aNearPoint)
 563                                 {
 564                                         $sNearPointSQL = "ST_SetSRID(ST_Point(".(float)$this->aNearPoint[1].",".(float)$this->aNearPoint[0]."),4326)";
 565                                         $aSearches[0]['fLat'] = (float)$this->aNearPoint[0];
 566                                         $aSearches[0]['fLon'] = (float)$this->aNearPoint[1];
 567                                         $aSearches[0]['fRadius'] = (float)$this->aNearPoint[2];
 568                                 }
 569
 570                                 // Any 'special' terms in the search?
 571                                 $bSpecialTerms = false;
 572                                 preg_match_all('/\\[(.*)=(.*)\\]/', $sQuery, $aSpecialTermsRaw, PREG_SET_ORDER);
 573                                 $aSpecialTerms = array();
 574                                 foreach($aSpecialTermsRaw as $aSpecialTerm)
 575                                 {
 576                                         $sQuery = str_replace($aSpecialTerm[0], ' ', $sQuery);
 577                                         $aSpecialTerms[strtolower($aSpecialTerm[1])] = $aSpecialTerm[2];
 578                                 }
 579
 580                                 preg_match_all('/\\[([\\w ]*)\\]/u', $sQuery, $aSpecialTermsRaw, PREG_SET_ORDER);
 581                                 $aSpecialTerms = array();
 582                                 if (isset($aStructuredQuery['amenity']) && $aStructuredQuery['amenity'])
 583                                 {
 584                                         $aSpecialTermsRaw[] = array('['.$aStructuredQuery['amenity'].']', $aStructuredQuery['amenity']);
 585                                         unset($aStructuredQuery['amenity']);
 586                                 }
 587                                 foreach($aSpecialTermsRaw as $aSpecialTerm)
 588                                 {
 589                                         $sQuery = str_replace($aSpecialTerm[0], ' ', $sQuery);
 590                                         $sToken = $this->oDB->getOne("select make_standard_name('".$aSpecialTerm[1]."') as string");
 591                                         $sSQL = 'select * from (select word_id,word_token, word, class, type, country_code, operator';
 592                                         $sSQL .= ' from word where word_token in (\' '.$sToken.'\')) as x where (class is not null and class not in (\'place\')) or country_code is not null';
 593                                         if (CONST_Debug) var_Dump($sSQL);
 594                                         $aSearchWords = $this->oDB->getAll($sSQL);
 595                                         $aNewSearches = array();
 596                                         foreach($aSearches as $aSearch)
 597                                         {
 598                                                 foreach($aSearchWords as $aSearchTerm)
 599                                                 {
 600                                                         $aNewSearch = $aSearch;
 601                                                         if ($aSearchTerm['country_code'])
 602                                                         {
 603                                                                 $aNewSearch['sCountryCode'] = strtolower($aSearchTerm['country_code']);
 604                                                                 $aNewSearches[] = $aNewSearch;
 605                                                                 $bSpecialTerms = true;
 606                                                         }
 607                                                         if ($aSearchTerm['class'])
 608                                                         {
 609                                                                 $aNewSearch['sClass'] = $aSearchTerm['class'];
 610                                                                 $aNewSearch['sType'] = $aSearchTerm['type'];
 611                                                                 $aNewSearches[] = $aNewSearch;
 612                                                                 $bSpecialTerms = true;
 613                                                         }
 614                                                 }
 615                                         }
 616                                         $aSearches = $aNewSearches;
 617                                 }
 618
 619                                 // Split query into phrases
 620                                 // Commas are used to reduce the search space by indicating where phrases split
 621                                 if ($this->aStructuredQuery)
 622                                 {
 623                                         $aPhrases = $this->aStructuredQuery;
 624                                         $bStructuredPhrases = true;
 625                                 }
 626                                 else
 627                                 {
 628                                         $aPhrases = explode(',',$sQuery);
 629                                         $bStructuredPhrases = false;
 630                                 }
 631
 632                                 // Convert each phrase to standard form
 633                                 // Create a list of standard words
 634                                 // Get all 'sets' of words
 635                                 // Generate a complete list of all
 636                                 $aTokens = array();
 637                                 foreach($aPhrases as $iPhrase => $sPhrase)
 638                                 {
 639                                         $aPhrase = $this->oDB->getRow("select make_standard_name('".pg_escape_string($sPhrase)."') as string");
 640                                         if (PEAR::isError($aPhrase))
 641                                         {
 642                                                 userError("Illegal query string (not an UTF-8 string): ".$sPhrase);
 643                                                 if (CONST_Debug) var_dump($aPhrase);
 644                                                 exit;
 645                                         }
 646                                         if (trim($aPhrase['string']))
 647                                         {
 648                                                 $aPhrases[$iPhrase] = $aPhrase;
 649                                                 $aPhrases[$iPhrase]['words'] = explode(' ',$aPhrases[$iPhrase]['string']);
 650                                                 $aPhrases[$iPhrase]['wordsets'] = getWordSets($aPhrases[$iPhrase]['words'], 0);
 651                                                 $aTokens = array_merge($aTokens, getTokensFromSets($aPhrases[$iPhrase]['wordsets']));
 652                                         }
 653                                         else
 654                                         {
 655                                                 unset($aPhrases[$iPhrase]);
 656                                         }
 657                                 }
 658
 659                                 // Reindex phrases - we make assumptions later on that they are numerically keyed in order
 660                                 $aPhraseTypes = array_keys($aPhrases);
 661                                 $aPhrases = array_values($aPhrases);
 662
 663                                 if (sizeof($aTokens))
 664                                 {
 665                                         // Check which tokens we have, get the ID numbers
 666                                         $sSQL = 'select word_id,word_token, word, class, type, country_code, operator, search_name_count';
 667                                         $sSQL .= ' from word where word_token in ('.join(',',array_map("getDBQuoted",$aTokens)).')';
 668
 669                                         if (CONST_Debug) var_Dump($sSQL);
 670
 671                                         $aValidTokens = array();
 672                                         if (sizeof($aTokens)) $aDatabaseWords = $this->oDB->getAll($sSQL);
 673                                         else $aDatabaseWords = array();
 674                                         if (PEAR::IsError($aDatabaseWords))
 675                                         {
 676                                                 failInternalError("Could not get word tokens.", $sSQL, $aDatabaseWords);
 677                                         }
 678                                         $aPossibleMainWordIDs = array();
 679                                         $aWordFrequencyScores = array();
 680                                         foreach($aDatabaseWords as $aToken)
 681                                         {
 682                                                 // Very special case - require 2 letter country param to match the country code found
 683                                                 if ($bStructuredPhrases && $aToken['country_code'] && !empty($aStructuredQuery['country'])
 684                                                                 && strlen($aStructuredQuery['country']) == 2 && strtolower($aStructuredQuery['country']) != $aToken['country_code'])
 685                                                 {
 686                                                         continue;
 687                                                 }
 688
 689                                                 if (isset($aValidTokens[$aToken['word_token']]))
 690                                                 {
 691                                                         $aValidTokens[$aToken['word_token']][] = $aToken;
 692                                                 }
 693                                                 else
 694                                                 {
 695                                                         $aValidTokens[$aToken['word_token']] = array($aToken);
 696                                                 }
 697                                                 if (!$aToken['class'] && !$aToken['country_code']) $aPossibleMainWordIDs[$aToken['word_id']] = 1;
 698                                                 $aWordFrequencyScores[$aToken['word_id']] = $aToken['search_name_count'] + 1;
 699                                         }
 700                                         if (CONST_Debug) var_Dump($aPhrases, $aValidTokens);
 701
 702                                         // Try and calculate GB postcodes we might be missing
 703                                         foreach($aTokens as $sToken)
 704                                         {
 705                                                 // Source of gb postcodes is now definitive - always use
 706                                                 if (preg_match('/^([A-Z][A-Z]?[0-9][0-9A-Z]? ?[0-9])([A-Z][A-Z])$/', strtoupper(trim($sToken)), $aData))
 707                                                 {
 708                                                         if (substr($aData[1],-2,1) != ' ')
 709                                                         {
 710                                                                 $aData[0] = substr($aData[0],0,strlen($aData[1])-1).' '.substr($aData[0],strlen($aData[1])-1);
 711                                                                 $aData[1] = substr($aData[1],0,-1).' '.substr($aData[1],-1,1);
 712                                                         }
 713                                                         $aGBPostcodeLocation = gbPostcodeCalculate($aData[0], $aData[1], $aData[2], $this->oDB);
 714                                                         if ($aGBPostcodeLocation)
 715                                                         {
 716                                                                 $aValidTokens[$sToken] = $aGBPostcodeLocation;
 717                                                         }
 718                                                 }
 719                                                 // US ZIP+4 codes - if there is no token,
 720                                                 //      merge in the 5-digit ZIP code
 721                                                 else if (!isset($aValidTokens[$sToken]) && preg_match('/^([0-9]{5}) [0-9]{4}$/', $sToken, $aData))
 722                                                 {
 723                                                         if (isset($aValidTokens[$aData[1]]))
 724                                                         {
 725                                                                 foreach($aValidTokens[$aData[1]] as $aToken)
 726                                                                 {
 727                                                                         if (!$aToken['class'])
 728                                                                         {
 729                                                                                 if (isset($aValidTokens[$sToken]))
 730                                                                                 {
 731                                                                                         $aValidTokens[$sToken][] = $aToken;
 732                                                                                 }
 733                                                                                 else
 734                                                                                 {
 735                                                                                         $aValidTokens[$sToken] = array($aToken);
 736                                                                                 }
 737                                                                         }
 738                                                                 }
 739                                                         }
 740                                                 }
 741                                         }
 742
 743                                         foreach($aTokens as $sToken)
 744                                         {
 745                                                 // Unknown single word token with a number - assume it is a house number
 746                                                 if (!isset($aValidTokens[' '.$sToken]) && strpos($sToken,' ') === false && preg_match('/[0-9]/', $sToken))
 747                                                 {
 748                                                         $aValidTokens[' '.$sToken] = array(array('class'=>'place','type'=>'house'));
 749                                                 }
 750                                         }
 751
 752                                         // Any words that have failed completely?
 753                                         // TODO: suggestions
 754
 755                                         // Start the search process
 756                                         $aResultPlaceIDs = array();
 757
 758                                         /*
 759                                            Calculate all searches using aValidTokens i.e.
 760                                            'Wodsworth Road, Sheffield' =>
 761
 762                                            Phrase Wordset
 763                                            0      0       (wodsworth road)
 764                                            0      1       (wodsworth)(road)
 765                                            1      0       (sheffield)
 766
 767                                            Score how good the search is so they can be ordered
 768                                          */
 769                                         foreach($aPhrases as $iPhrase => $sPhrase)
 770                                         {
 771                                                 $aNewPhraseSearches = array();
 772                                                 if ($bStructuredPhrases) $sPhraseType = $aPhraseTypes[$iPhrase];
 773                                                 else $sPhraseType = '';
 774
 775                                                 foreach($aPhrases[$iPhrase]['wordsets'] as $iWordSet => $aWordset)
 776                                                 {
 777                                                         // Too many permutations - too expensive
 778                                                         if ($iWordSet > 120) break;
 779
 780                                                         $aWordsetSearches = $aSearches;
 781
 782                                                         // Add all words from this wordset
 783                                                         foreach($aWordset as $iToken => $sToken)
 784                                                         {
 785                                                                 //echo "<br><b>$sToken</b>";
 786                                                                 $aNewWordsetSearches = array();
 787
 788                                                                 foreach($aWordsetSearches as $aCurrentSearch)
 789                                                                 {
 790                                                                         //echo "<i>";
 791                                                                         //var_dump($aCurrentSearch);
 792                                                                         //echo "</i>";
 793
 794                                                                         // If the token is valid
 795                                                                         if (isset($aValidTokens[' '.$sToken]))
 796                                                                         {
 797                                                                                 foreach($aValidTokens[' '.$sToken] as $aSearchTerm)
 798                                                                                 {
 799                                                                                         $aSearch = $aCurrentSearch;
 800                                                                                         $aSearch['iSearchRank']++;
 801                                                                                         if (($sPhraseType == '' || $sPhraseType == 'country') && !empty($aSearchTerm['country_code']) && $aSearchTerm['country_code'] != '0')
 802                                                                                         {
 803                                                                                                 if ($aSearch['sCountryCode'] === false)
 804                                                                                                 {
 805                                                                                                         $aSearch['sCountryCode'] = strtolower($aSearchTerm['country_code']);
 806                                                                                                         // Country is almost always at the end of the string - increase score for finding it anywhere else (optimisation)
 807                                                                                                         // If reverse order is enabled, it may appear at the beginning as well.
 808                                                                                                         if (($iToken+1 != sizeof($aWordset) || $iPhrase+1 != sizeof($aPhrases)) &&
 809                                                                                                                         (!$this->bReverseInPlan || $iToken > 0 || $iPhrase > 0))
 810                                                                                                         {
 811                                                                                                                 $aSearch['iSearchRank'] += 5;
 812                                                                                                         }
 813                                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 814                                                                                                 }
 815                                                                                         }
 816                                                                                         elseif (isset($aSearchTerm['lat']) && $aSearchTerm['lat'] !== '' && $aSearchTerm['lat'] !== null)
 817                                                                                         {
 818                                                                                                 if ($aSearch['fLat'] === '')
 819                                                                                                 {
 820                                                                                                         $aSearch['fLat'] = $aSearchTerm['lat'];
 821                                                                                                         $aSearch['fLon'] = $aSearchTerm['lon'];
 822                                                                                                         $aSearch['fRadius'] = $aSearchTerm['radius'];
 823                                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 824                                                                                                 }
 825                                                                                         }
 826                                                                                         elseif ($sPhraseType == 'postalcode')
 827                                                                                         {
 828                                                                                                 // 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
 829                                                                                                 if (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
 830                                                                                                 {
 831                                                                                                         // If we already have a name try putting the postcode first
 832                                                                                                         if (sizeof($aSearch['aName']))
 833                                                                                                         {
 834                                                                                                                 $aNewSearch = $aSearch;
 835                                                                                                                 $aNewSearch['aAddress'] = array_merge($aNewSearch['aAddress'], $aNewSearch['aName']);
 836                                                                                                                 $aNewSearch['aName'] = array();
 837                                                                                                                 $aNewSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 838                                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aNewSearch;
 839                                                                                                         }
 840
 841                                                                                                         if (sizeof($aSearch['aName']))
 842                                                                                                         {
 843                                                                                                                 if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strlen($sToken) < 4 || strpos($sToken, ' ') !== false))
 844                                                                                                                 {
 845                                                                                                                         $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 846                                                                                                                 }
 847                                                                                                                 else
 848                                                                                                                 {
 849                                                                                                                         $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 850                                                                                                                         $aSearch['iSearchRank'] += 1000; // skip;
 851                                                                                                                 }
 852                                                                                                         }
 853                                                                                                         else
 854                                                                                                         {
 855                                                                                                                 $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 856                                                                                                                 //$aSearch['iNamePhrase'] = $iPhrase;
 857                                                                                                         }
 858                                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 859                                                                                                 }
 860
 861                                                                                         }
 862                                                                                         elseif (($sPhraseType == '' || $sPhraseType == 'street') && $aSearchTerm['class'] == 'place' && $aSearchTerm['type'] == 'house')
 863                                                                                         {
 864                                                                                                 if ($aSearch['sHouseNumber'] === '')
 865                                                                                                 {
 866                                                                                                         $aSearch['sHouseNumber'] = $sToken;
 867                                                                                                         // sanity check: if the housenumber is not mainly made
 868                                                                                                         // up of numbers, add a penalty
 869                                                                                                         if (preg_match_all("/[^0-9]/", $sToken, $aMatches) > 2) $aSearch['iSearchRank']++;
 870                                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 871                                                                                                         /*
 872                                                                                                         // Fall back to not searching for this item (better than nothing)
 873                                                                                                         $aSearch = $aCurrentSearch;
 874                                                                                                         $aSearch['iSearchRank'] += 1;
 875                                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 876                                                                                                          */
 877                                                                                                 }
 878                                                                                         }
 879                                                                                         elseif ($sPhraseType == '' && $aSearchTerm['class'] !== '' && $aSearchTerm['class'] !== null)
 880                                                                                         {
 881                                                                                                 if ($aSearch['sClass'] === '')
 882                                                                                                 {
 883                                                                                                         $aSearch['sOperator'] = $aSearchTerm['operator'];
 884                                                                                                         $aSearch['sClass'] = $aSearchTerm['class'];
 885                                                                                                         $aSearch['sType'] = $aSearchTerm['type'];
 886                                                                                                         if (sizeof($aSearch['aName'])) $aSearch['sOperator'] = 'name';
 887                                                                                                         else $aSearch['sOperator'] = 'near'; // near = in for the moment
 888                                                                                                         if (strlen($aSearchTerm['operator']) == 0) $aSearch['iSearchRank'] += 1;
 889
 890                                                                                                         // Do we have a shortcut id?
 891                                                                                                         if ($aSearch['sOperator'] == 'name')
 892                                                                                                         {
 893                                                                                                                 $sSQL = "select get_tagpair('".$aSearch['sClass']."', '".$aSearch['sType']."')";
 894                                                                                                                 if ($iAmenityID = $this->oDB->getOne($sSQL))
 895                                                                                                                 {
 896                                                                                                                         $aValidTokens[$aSearch['sClass'].':'.$aSearch['sType']] = array('word_id' => $iAmenityID);
 897                                                                                                                         $aSearch['aName'][$iAmenityID] = $iAmenityID;
 898                                                                                                                         $aSearch['sClass'] = '';
 899                                                                                                                         $aSearch['sType'] = '';
 900                                                                                                                 }
 901                                                                                                         }
 902                                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 903                                                                                                 }
 904                                                                                         }
 905                                                                                         elseif (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
 906                                                                                         {
 907                                                                                                 if (sizeof($aSearch['aName']))
 908                                                                                                 {
 909                                                                                                         if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strlen($sToken) < 4 || strpos($sToken, ' ') !== false))
 910                                                                                                         {
 911                                                                                                                 $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 912                                                                                                         }
 913                                                                                                         else
 914                                                                                                         {
 915                                                                                                                 $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 916                                                                                                                 $aSearch['iSearchRank'] += 1000; // skip;
 917                                                                                                         }
 918                                                                                                 }
 919                                                                                                 else
 920                                                                                                 {
 921                                                                                                         $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 922                                                                                                         //$aSearch['iNamePhrase'] = $iPhrase;
 923                                                                                                 }
 924                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 925                                                                                         }
 926                                                                                 }
 927                                                                         }
 928                                                                         if (isset($aValidTokens[$sToken]))
 929                                                                         {
 930                                                                                 // Allow searching for a word - but at extra cost
 931                                                                                 foreach($aValidTokens[$sToken] as $aSearchTerm)
 932                                                                                 {
 933                                                                                         if (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
 934                                                                                         {
 935                                                                                                 if ((!$bStructuredPhrases || $iPhrase > 0) && sizeof($aCurrentSearch['aName']) && strlen($sToken) >= 4)
 936                                                                                                 {
 937                                                                                                         $aSearch = $aCurrentSearch;
 938                                                                                                         $aSearch['iSearchRank'] += 1;
 939                                                                                                         if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency)
 940                                                                                                         {
 941                                                                                                                 $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 942                                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 943                                                                                                         }
 944                                                                                                         elseif (isset($aValidTokens[' '.$sToken])) // revert to the token version?
 945                                                                                                         {
 946                                                                                                                 foreach($aValidTokens[' '.$sToken] as $aSearchTermToken)
 947                                                                                                                 {
 948                                                                                                                         if (empty($aSearchTermToken['country_code'])
 949                                                                                                                                         && empty($aSearchTermToken['lat'])
 950                                                                                                                                         && empty($aSearchTermToken['class']))
 951                                                                                                                         {
 952                                                                                                                                 $aSearch = $aCurrentSearch;
 953                                                                                                                                 $aSearch['iSearchRank'] += 1;
 954                                                                                                                                 $aSearch['aAddress'][$aSearchTermToken['word_id']] = $aSearchTermToken['word_id'];
 955                                                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 956                                                                                                                         }
 957                                                                                                                 }
 958                                                                                                         }
 959                                                                                                         else
 960                                                                                                         {
 961                                                                                                                 $aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 962                                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 963                                                                                                         }
 964                                                                                                 }
 965
 966                                                                                                 if (!sizeof($aCurrentSearch['aName']) || $aCurrentSearch['iNamePhrase'] == $iPhrase)
 967                                                                                                 {
 968                                                                                                         $aSearch = $aCurrentSearch;
 969                                                                                                         $aSearch['iSearchRank'] += 2;
 970                                                                                                         if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
 971                                                                                                         if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency)
 972                                                                                                                 $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 973                                                                                                         else
 974                                                                                                                 $aSearch['aNameNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 975                                                                                                         $aSearch['iNamePhrase'] = $iPhrase;
 976                                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 977                                                                                                 }
 978                                                                                         }
 979                                                                                 }
 980                                                                         }
 981                                                                         else
 982                                                                         {
 983                                                                                 // Allow skipping a word - but at EXTREAM cost
 984                                                                                 //$aSearch = $aCurrentSearch;
 985                                                                                 //$aSearch['iSearchRank']+=100;
 986                                                                                 //$aNewWordsetSearches[] = $aSearch;
 987                                                                         }
 988                                                                 }
 989                                                                 // Sort and cut
 990                                                                 usort($aNewWordsetSearches, 'bySearchRank');
 991                                                                 $aWordsetSearches = array_slice($aNewWordsetSearches, 0, 50);
 992                                                         }
 993                                                         //var_Dump('<hr>',sizeof($aWordsetSearches)); exit;
 994
 995                                                         $aNewPhraseSearches = array_merge($aNewPhraseSearches, $aNewWordsetSearches);
 996                                                         usort($aNewPhraseSearches, 'bySearchRank');
 997
 998                                                         $aSearchHash = array();
 999                                                         foreach($aNewPhraseSearches as $iSearch => $aSearch)
1000                                                         {
1001                                                                 $sHash = serialize($aSearch);
1002                                                                 if (isset($aSearchHash[$sHash])) unset($aNewPhraseSearches[$iSearch]);
1003                                                                 else $aSearchHash[$sHash] = 1;
1004                                                         }
1005
1006                                                         $aNewPhraseSearches = array_slice($aNewPhraseSearches, 0, 50);
1007                                                 }
1008
1009                                                 // Re-group the searches by their score, junk anything over 20 as just not worth trying
1010                                                 $aGroupedSearches = array();
1011                                                 foreach($aNewPhraseSearches as $aSearch)
1012                                                 {
1013                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank)
1014                                                         {
1015                                                                 if (!isset($aGroupedSearches[$aSearch['iSearchRank']])) $aGroupedSearches[$aSearch['iSearchRank']] = array();
1016                                                                 $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
1017                                                         }
1018                                                 }
1019                                                 ksort($aGroupedSearches);
1020
1021                                                 $iSearchCount = 0;
1022                                                 $aSearches = array();
1023                                                 foreach($aGroupedSearches as $iScore => $aNewSearches)
1024                                                 {
1025                                                         $iSearchCount += sizeof($aNewSearches);
1026                                                         $aSearches = array_merge($aSearches, $aNewSearches);
1027                                                         if ($iSearchCount > 50) break;
1028                                                 }
1029
1030                                                 //if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
1031
1032                                         }
1033
1034                                 }
1035                                 else
1036                                 {
1037                                         // Re-group the searches by their score, junk anything over 20 as just not worth trying
1038                                         $aGroupedSearches = array();
1039                                         foreach($aSearches as $aSearch)
1040                                         {
1041                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank)
1042                                                 {
1043                                                         if (!isset($aGroupedSearches[$aSearch['iSearchRank']])) $aGroupedSearches[$aSearch['iSearchRank']] = array();
1044                                                         $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
1045                                                 }
1046                                         }
1047                                         ksort($aGroupedSearches);
1048                                 }
1049
1050                                 if (CONST_Debug) var_Dump($aGroupedSearches);
1051
1052                                 if ($this->bReverseInPlan)
1053                                 {
1054                                         $aCopyGroupedSearches = $aGroupedSearches;
1055                                         foreach($aCopyGroupedSearches as $iGroup => $aSearches)
1056                                         {
1057                                                 foreach($aSearches as $iSearch => $aSearch)
1058                                                 {
1059                                                         if (sizeof($aSearch['aAddress']))
1060                                                         {
1061                                                                 $iReverseItem = array_pop($aSearch['aAddress']);
1062                                                                 if (isset($aPossibleMainWordIDs[$iReverseItem]))
1063                                                                 {
1064                                                                         $aSearch['aAddress'] = array_merge($aSearch['aAddress'], $aSearch['aName']);
1065                                                                         $aSearch['aName'] = array($iReverseItem);
1066                                                                         $aGroupedSearches[$iGroup][] = $aSearch;
1067                                                                 }
1068                                                                 //$aReverseSearch['aName'][$iReverseItem] = $iReverseItem;
1069                                                                 //$aGroupedSearches[$iGroup][] = $aReverseSearch;
1070                                                         }
1071                                                 }
1072                                         }
1073                                 }
1074
1075                                 if (CONST_Search_TryDroppedAddressTerms && sizeof($aStructuredQuery) > 0)
1076                                 {
1077                                         $aCopyGroupedSearches = $aGroupedSearches;
1078                                         foreach($aCopyGroupedSearches as $iGroup => $aSearches)
1079                                         {
1080                                                 foreach($aSearches as $iSearch => $aSearch)
1081                                                 {
1082                                                         $aReductionsList = array($aSearch['aAddress']);
1083                                                         $iSearchRank = $aSearch['iSearchRank'];
1084                                                         while(sizeof($aReductionsList) > 0)
1085                                                         {
1086                                                                 $iSearchRank += 5;
1087                                                                 if ($iSearchRank > iMaxRank) break 3;
1088                                                                 $aNewReductionsList = array();
1089                                                                 foreach($aReductionsList as $aReductionsWordList)
1090                                                                 {
1091                                                                         for ($iReductionWord = 0; $iReductionWord < sizeof($aReductionsWordList); $iReductionWord++)
1092                                                                         {
1093                                                                                 $aReductionsWordListResult = array_merge(array_slice($aReductionsWordList, 0, $iReductionWord), array_slice($aReductionsWordList, $iReductionWord+1));
1094                                                                                 $aReverseSearch = $aSearch;
1095                                                                                 $aSearch['aAddress'] = $aReductionsWordListResult;
1096                                                                                 $aSearch['iSearchRank'] = $iSearchRank;
1097                                                                                 $aGroupedSearches[$iSearchRank][] = $aReverseSearch;
1098                                                                                 if (sizeof($aReductionsWordListResult) > 0)
1099                                                                                 {
1100                                                                                         $aNewReductionsList[] = $aReductionsWordListResult;
1101                                                                                 }
1102                                                                         }
1103                                                                 }
1104                                                                 $aReductionsList = $aNewReductionsList;
1105                                                         }
1106                                                 }
1107                                         }
1108                                         ksort($aGroupedSearches);
1109                                 }
1110
1111                                 // Filter out duplicate searches
1112                                 $aSearchHash = array();
1113                                 foreach($aGroupedSearches as $iGroup => $aSearches)
1114                                 {
1115                                         foreach($aSearches as $iSearch => $aSearch)
1116                                         {
1117                                                 $sHash = serialize($aSearch);
1118                                                 if (isset($aSearchHash[$sHash]))
1119                                                 {
1120                                                         unset($aGroupedSearches[$iGroup][$iSearch]);
1121                                                         if (sizeof($aGroupedSearches[$iGroup]) == 0) unset($aGroupedSearches[$iGroup]);
1122                                                 }
1123                                                 else
1124                                                 {
1125                                                         $aSearchHash[$sHash] = 1;
1126                                                 }
1127                                         }
1128                                 }
1129
1130                                 if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
1131
1132                                 $iGroupLoop = 0;
1133                                 $iQueryLoop = 0;
1134                                 foreach($aGroupedSearches as $iGroupedRank => $aSearches)
1135                                 {
1136                                         $iGroupLoop++;
1137                                         foreach($aSearches as $aSearch)
1138                                         {
1139                                                 $iQueryLoop++;
1140
1141                                                 if (CONST_Debug) { echo "<hr><b>Search Loop, group $iGroupLoop, loop $iQueryLoop</b>"; }
1142                                                 if (CONST_Debug) _debugDumpGroupedSearches(array($iGroupedRank => array($aSearch)), $aValidTokens);
1143
1144                                                 // No location term?
1145                                                 if (!sizeof($aSearch['aName']) && !sizeof($aSearch['aAddress']) && !$aSearch['fLon'])
1146                                                 {
1147                                                         if ($aSearch['sCountryCode'] && !$aSearch['sClass'] && !$aSearch['sHouseNumber'])
1148                                                         {
1149                                                                 // Just looking for a country by code - look it up
1150                                                                 if (4 >= $this->iMinAddressRank && 4 <= $this->iMaxAddressRank)
1151                                                                 {
1152                                                                         $sSQL = "select place_id from placex where calculated_country_code='".$aSearch['sCountryCode']."' and rank_search = 4";
1153                                                                         if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1154                                                                         $sSQL .= " order by st_area(geometry) desc limit 1";
1155                                                                         if (CONST_Debug) var_dump($sSQL);
1156                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL);
1157                                                                 }
1158                                                                 else
1159                                                                 {
1160                                                                         $aPlaceIDs = array();
1161                                                                 }
1162                                                         }
1163                                                         else
1164                                                         {
1165                                                                 if (!$bBoundingBoxSearch && !$aSearch['fLon']) continue;
1166                                                                 if (!$aSearch['sClass']) continue;
1167                                                                 $sSQL = "select count(*) from pg_tables where tablename = 'place_classtype_".$aSearch['sClass']."_".$aSearch['sType']."'";
1168                                                                 if ($this->oDB->getOne($sSQL))
1169                                                                 {
1170                                                                         $sSQL = "select place_id from place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." ct";
1171                                                                         if ($sCountryCodesSQL) $sSQL .= " join placex using (place_id)";
1172                                                                         $sSQL .= " where st_contains($this->sViewboxSmallSQL, ct.centroid)";
1173                                                                         if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1174                                                                         if (sizeof($this->aExcludePlaceIDs))
1175                                                                         {
1176                                                                                 $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1177                                                                         }
1178                                                                         if ($sViewboxCentreSQL) $sSQL .= " order by st_distance($sViewboxCentreSQL, ct.centroid) asc";
1179                                                                         $sSQL .= " limit $this->iLimit";
1180                                                                         if (CONST_Debug) var_dump($sSQL);
1181                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL);
1182
1183                                                                         // If excluded place IDs are given, it is fair to assume that
1184                                                                         // there have been results in the small box, so no further
1185                                                                         // expansion in that case.
1186                                                                         // Also don't expand if bounded results were requested.
1187                                                                         if (!sizeof($aPlaceIDs) && !sizeof($this->aExcludePlaceIDs) && !$this->bBoundedSearch)
1188                                                                         {
1189                                                                                 $sSQL = "select place_id from place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." ct";
1190                                                                                 if ($sCountryCodesSQL) $sSQL .= " join placex using (place_id)";
1191                                                                                 $sSQL .= " where st_contains($this->sViewboxLargeSQL, ct.centroid)";
1192                                                                                 if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1193                                                                                 if ($sViewboxCentreSQL) $sSQL .= " order by st_distance($sViewboxCentreSQL, ct.centroid) asc";
1194                                                                                 $sSQL .= " limit $this->iLimit";
1195                                                                                 if (CONST_Debug) var_dump($sSQL);
1196                                                                                 $aPlaceIDs = $this->oDB->getCol($sSQL);
1197                                                                         }
1198                                                                 }
1199                                                                 else
1200                                                                 {
1201                                                                         $sSQL = "select place_id from placex where class='".$aSearch['sClass']."' and type='".$aSearch['sType']."'";
1202                                                                         $sSQL .= " and st_contains($this->sViewboxSmallSQL, geometry) and linked_place_id is null";
1203                                                                         if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1204                                                                         if ($sViewboxCentreSQL) $sSQL .= " order by st_distance($sViewboxCentreSQL, centroid) asc";
1205                                                                         $sSQL .= " limit $this->iLimit";
1206                                                                         if (CONST_Debug) var_dump($sSQL);
1207                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL);
1208                                                                 }
1209                                                         }
1210                                                 }
1211                                                 else
1212                                                 {
1213                                                         $aPlaceIDs = array();
1214
1215                                                         // First we need a position, either aName or fLat or both
1216                                                         $aTerms = array();
1217                                                         $aOrder = array();
1218
1219                                                         // TODO: filter out the pointless search terms (2 letter name tokens and less)
1220                                                         // they might be right - but they are just too darned expensive to run
1221                                                         if (sizeof($aSearch['aName'])) $aTerms[] = "name_vector @> ARRAY[".join($aSearch['aName'],",")."]";
1222                                                         if (sizeof($aSearch['aNameNonSearch'])) $aTerms[] = "array_cat(name_vector,ARRAY[]::integer[]) @> ARRAY[".join($aSearch['aNameNonSearch'],",")."]";
1223                                                         if (sizeof($aSearch['aAddress']) && $aSearch['aName'] != $aSearch['aAddress'])
1224                                                         {
1225                                                                 // For infrequent name terms disable index usage for address
1226                                                                 if (CONST_Search_NameOnlySearchFrequencyThreshold &&
1227                                                                                 sizeof($aSearch['aName']) == 1 &&
1228                                                                                 $aWordFrequencyScores[$aSearch['aName'][reset($aSearch['aName'])]] < CONST_Search_NameOnlySearchFrequencyThreshold)
1229                                                                 {
1230                                                                         $aTerms[] = "array_cat(nameaddress_vector,ARRAY[]::integer[]) @> ARRAY[".join(array_merge($aSearch['aAddress'],$aSearch['aAddressNonSearch']),",")."]";
1231                                                                 }
1232                                                                 else
1233                                                                 {
1234                                                                         $aTerms[] = "nameaddress_vector @> ARRAY[".join($aSearch['aAddress'],",")."]";
1235                                                                         if (sizeof($aSearch['aAddressNonSearch'])) $aTerms[] = "array_cat(nameaddress_vector,ARRAY[]::integer[]) @> ARRAY[".join($aSearch['aAddressNonSearch'],",")."]";
1236                                                                 }
1237                                                         }
1238                                                         if ($aSearch['sCountryCode']) $aTerms[] = "country_code = '".pg_escape_string($aSearch['sCountryCode'])."'";
1239                                                         if ($aSearch['sHouseNumber'])
1240                                                         {
1241                                                                 $aTerms[] = "address_rank between 16 and 27";
1242                                                         }
1243                                                         else
1244                                                         {
1245                                                                 if ($this->iMinAddressRank > 0)
1246                                                                 {
1247                                                                         $aTerms[] = "address_rank >= ".$this->iMinAddressRank;
1248                                                                 }
1249                                                                 if ($this->iMaxAddressRank < 30)
1250                                                                 {
1251                                                                         $aTerms[] = "address_rank <= ".$this->iMaxAddressRank;
1252                                                                 }
1253                                                         }
1254                                                         if ($aSearch['fLon'] && $aSearch['fLat'])
1255                                                         {
1256                                                                 $aTerms[] = "ST_DWithin(centroid, ST_SetSRID(ST_Point(".$aSearch['fLon'].",".$aSearch['fLat']."),4326), ".$aSearch['fRadius'].")";
1257                                                                 $aOrder[] = "ST_Distance(centroid, ST_SetSRID(ST_Point(".$aSearch['fLon'].",".$aSearch['fLat']."),4326)) ASC";
1258                                                         }
1259                                                         if (sizeof($this->aExcludePlaceIDs))
1260                                                         {
1261                                                                 $aTerms[] = "place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1262                                                         }
1263                                                         if ($sCountryCodesSQL)
1264                                                         {
1265                                                                 $aTerms[] = "country_code in ($sCountryCodesSQL)";
1266                                                         }
1267
1268                                                         if ($bBoundingBoxSearch) $aTerms[] = "centroid && $this->sViewboxSmallSQL";
1269                                                         if ($sNearPointSQL) $aOrder[] = "ST_Distance($sNearPointSQL, centroid) asc";
1270
1271                                                         if ($aSearch['sHouseNumber'])
1272                                                         {
1273                                                                 $sImportanceSQL = '- abs(26 - address_rank) + 3';
1274                                                         }
1275                                                         else
1276                                                         {
1277                                                                 $sImportanceSQL = '(case when importance = 0 OR importance IS NULL then 0.75-(search_rank::float/40) else importance end)';
1278                                                         }
1279                                                         if ($this->sViewboxSmallSQL) $sImportanceSQL .= " * case when ST_Contains($this->sViewboxSmallSQL, centroid) THEN 1 ELSE 0.5 END";
1280                                                         if ($this->sViewboxLargeSQL) $sImportanceSQL .= " * case when ST_Contains($this->sViewboxLargeSQL, centroid) THEN 1 ELSE 0.5 END";
1281
1282                                                         $aOrder[] = "$sImportanceSQL DESC";
1283                                                         if (sizeof($aSearch['aFullNameAddress']))
1284                                                         {
1285                                                                 $sExactMatchSQL = '(select count(*) from (select unnest(ARRAY['.join($aSearch['aFullNameAddress'],",").']) INTERSECT select unnest(nameaddress_vector))s) as exactmatch';
1286                                                                 $aOrder[] = 'exactmatch DESC';
1287                                                         } else {
1288                                                                 $sExactMatchSQL = '0::int as exactmatch';
1289                                                         }
1290
1291                                                         if (sizeof($aTerms))
1292                                                         {
1293                                                                 $sSQL = "select place_id, ";
1294                                                                 $sSQL .= $sExactMatchSQL;
1295                                                                 $sSQL .= " from search_name";
1296                                                                 $sSQL .= " where ".join(' and ',$aTerms);
1297                                                                 $sSQL .= " order by ".join(', ',$aOrder);
1298                                                                 if ($aSearch['sHouseNumber'] || $aSearch['sClass'])
1299                                                                         $sSQL .= " limit 50";
1300                                                                 elseif (!sizeof($aSearch['aName']) && !sizeof($aSearch['aAddress']) && $aSearch['sClass'])
1301                                                                         $sSQL .= " limit 1";
1302                                                                 else
1303                                                                         $sSQL .= " limit ".$this->iLimit;
1304
1305                                                                 if (CONST_Debug) { var_dump($sSQL); }
1306                                                                 $aViewBoxPlaceIDs = $this->oDB->getAll($sSQL);
1307                                                                 if (PEAR::IsError($aViewBoxPlaceIDs))
1308                                                                 {
1309                                                                         failInternalError("Could not get places for search terms.", $sSQL, $aViewBoxPlaceIDs);
1310                                                                 }
1311                                                                 //var_dump($aViewBoxPlaceIDs);
1312                                                                 // Did we have an viewbox matches?
1313                                                                 $aPlaceIDs = array();
1314                                                                 $bViewBoxMatch = false;
1315                                                                 foreach($aViewBoxPlaceIDs as $aViewBoxRow)
1316                                                                 {
1317                                                                         //if ($bViewBoxMatch == 1 && $aViewBoxRow['in_small'] == 'f') break;
1318                                                                         //if ($bViewBoxMatch == 2 && $aViewBoxRow['in_large'] == 'f') break;
1319                                                                         //if ($aViewBoxRow['in_small'] == 't') $bViewBoxMatch = 1;
1320                                                                         //else if ($aViewBoxRow['in_large'] == 't') $bViewBoxMatch = 2;
1321                                                                         $aPlaceIDs[] = $aViewBoxRow['place_id'];
1322                                                                         $this->exactMatchCache[$aViewBoxRow['place_id']] = $aViewBoxRow['exactmatch'];
1323                                                                 }
1324                                                         }
1325                                                         //var_Dump($aPlaceIDs);
1326                                                         //exit;
1327
1328                                                         if ($aSearch['sHouseNumber'] && sizeof($aPlaceIDs))
1329                                                         {
1330                                                                 $aRoadPlaceIDs = $aPlaceIDs;
1331                                                                 $sPlaceIDs = join(',',$aPlaceIDs);
1332
1333                                                                 // Now they are indexed look for a house attached to a street we found
1334                                                                 $sHouseNumberRegex = '\\\\m'.$aSearch['sHouseNumber'].'\\\\M';
1335                                                                 $sSQL = "select place_id from placex where parent_place_id in (".$sPlaceIDs.") and transliteration(housenumber) ~* E'".$sHouseNumberRegex."'";
1336                                                                 if (sizeof($this->aExcludePlaceIDs))
1337                                                                 {
1338                                                                         $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1339                                                                 }
1340                                                                 $sSQL .= " limit $this->iLimit";
1341                                                                 if (CONST_Debug) var_dump($sSQL);
1342                                                                 $aPlaceIDs = $this->oDB->getCol($sSQL);
1343
1344                                                                 // If not try the aux fallback table
1345                                                                 if (!sizeof($aPlaceIDs))
1346                                                                 {
1347                                                                         $sSQL = "select place_id from location_property_aux where parent_place_id in (".$sPlaceIDs.") and housenumber = '".pg_escape_string($aSearch['sHouseNumber'])."'";
1348                                                                         if (sizeof($this->aExcludePlaceIDs))
1349                                                                         {
1350                                                                                 $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1351                                                                         }
1352                                                                         //$sSQL .= " limit $this->iLimit";
1353                                                                         if (CONST_Debug) var_dump($sSQL);
1354                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL);
1355                                                                 }
1356
1357                                                                 if (!sizeof($aPlaceIDs))
1358                                                                 {
1359                                                                         $sSQL = "select place_id from location_property_tiger where parent_place_id in (".$sPlaceIDs.") and housenumber = '".pg_escape_string($aSearch['sHouseNumber'])."'";
1360                                                                         if (sizeof($this->aExcludePlaceIDs))
1361                                                                         {
1362                                                                                 $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1363                                                                         }
1364                                                                         //$sSQL .= " limit $this->iLimit";
1365                                                                         if (CONST_Debug) var_dump($sSQL);
1366                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL);
1367                                                                 }
1368
1369                                                                 // Fallback to the road
1370                                                                 if (!sizeof($aPlaceIDs) && preg_match('/[0-9]+/', $aSearch['sHouseNumber']))
1371                                                                 {
1372                                                                         $aPlaceIDs = $aRoadPlaceIDs;
1373                                                                 }
1374
1375                                                         }
1376
1377                                                         if ($aSearch['sClass'] && sizeof($aPlaceIDs))
1378                                                         {
1379                                                                 $sPlaceIDs = join(',',$aPlaceIDs);
1380                                                                 $aClassPlaceIDs = array();
1381
1382                                                                 if (!$aSearch['sOperator'] || $aSearch['sOperator'] == 'name')
1383                                                                 {
1384                                                                         // If they were searching for a named class (i.e. 'Kings Head pub') then we might have an extra match
1385                                                                         $sSQL = "select place_id from placex where place_id in ($sPlaceIDs) and class='".$aSearch['sClass']."' and type='".$aSearch['sType']."'";
1386                                                                         $sSQL .= " and linked_place_id is null";
1387                                                                         if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1388                                                                         $sSQL .= " order by rank_search asc limit $this->iLimit";
1389                                                                         if (CONST_Debug) var_dump($sSQL);
1390                                                                         $aClassPlaceIDs = $this->oDB->getCol($sSQL);
1391                                                                 }
1392
1393                                                                 if (!$aSearch['sOperator'] || $aSearch['sOperator'] == 'near') // & in
1394                                                                 {
1395                                                                         $sSQL = "select count(*) from pg_tables where tablename = 'place_classtype_".$aSearch['sClass']."_".$aSearch['sType']."'";
1396                                                                         $bCacheTable = $this->oDB->getOne($sSQL);
1397
1398                                                                         $sSQL = "select min(rank_search) from placex where place_id in ($sPlaceIDs)";
1399
1400                                                                         if (CONST_Debug) var_dump($sSQL);
1401                                                                         $this->iMaxRank = ((int)$this->oDB->getOne($sSQL));
1402
1403                                                                         // For state / country level searches the normal radius search doesn't work very well
1404                                                                         $sPlaceGeom = false;
1405                                                                         if ($this->iMaxRank < 9 && $bCacheTable)
1406                                                                         {
1407                                                                                 // Try and get a polygon to search in instead
1408                                                                                 $sSQL = "select geometry from placex where place_id in ($sPlaceIDs) and rank_search < $this->iMaxRank + 5 and st_geometrytype(geometry) in ('ST_Polygon','ST_MultiPolygon') order by rank_search asc limit 1";
1409                                                                                 if (CONST_Debug) var_dump($sSQL);
1410                                                                                 $sPlaceGeom = $this->oDB->getOne($sSQL);
1411                                                                         }
1412
1413                                                                         if ($sPlaceGeom)
1414                                                                         {
1415                                                                                 $sPlaceIDs = false;
1416                                                                         }
1417                                                                         else
1418                                                                         {
1419                                                                                 $this->iMaxRank += 5;
1420                                                                                 $sSQL = "select place_id from placex where place_id in ($sPlaceIDs) and rank_search < $this->iMaxRank";
1421                                                                                 if (CONST_Debug) var_dump($sSQL);
1422                                                                                 $aPlaceIDs = $this->oDB->getCol($sSQL);
1423                                                                                 $sPlaceIDs = join(',',$aPlaceIDs);
1424                                                                         }
1425
1426                                                                         if ($sPlaceIDs || $sPlaceGeom)
1427                                                                         {
1428
1429                                                                                 $fRange = 0.01;
1430                                                                                 if ($bCacheTable)
1431                                                                                 {
1432                                                                                         // More efficient - can make the range bigger
1433                                                                                         $fRange = 0.05;
1434
1435                                                                                         $sOrderBySQL = '';
1436                                                                                         if ($sNearPointSQL) $sOrderBySQL = "ST_Distance($sNearPointSQL, l.centroid)";
1437                                                                                         else if ($sPlaceIDs) $sOrderBySQL = "ST_Distance(l.centroid, f.geometry)";
1438                                                                                         else if ($sPlaceGeom) $sOrderBysSQL = "ST_Distance(st_centroid('".$sPlaceGeom."'), l.centroid)";
1439
1440                                                                                         $sSQL = "select distinct l.place_id".($sOrderBySQL?','.$sOrderBySQL:'')." from place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." as l";
1441                                                                                         if ($sCountryCodesSQL) $sSQL .= " join placex as lp using (place_id)";
1442                                                                                         if ($sPlaceIDs)
1443                                                                                         {
1444                                                                                                 $sSQL .= ",placex as f where ";
1445                                                                                                 $sSQL .= "f.place_id in ($sPlaceIDs) and ST_DWithin(l.centroid, f.centroid, $fRange) ";
1446                                                                                         }
1447                                                                                         if ($sPlaceGeom)
1448                                                                                         {
1449                                                                                                 $sSQL .= " where ";
1450                                                                                                 $sSQL .= "ST_Contains('".$sPlaceGeom."', l.centroid) ";
1451                                                                                         }
1452                                                                                         if (sizeof($this->aExcludePlaceIDs))
1453                                                                                         {
1454                                                                                                 $sSQL .= " and l.place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1455                                                                                         }
1456                                                                                         if ($sCountryCodesSQL) $sSQL .= " and lp.calculated_country_code in ($sCountryCodesSQL)";
1457                                                                                         if ($sOrderBySQL) $sSQL .= "order by ".$sOrderBySQL." asc";
1458                                                                                         if ($this->iOffset) $sSQL .= " offset $this->iOffset";
1459                                                                                         $sSQL .= " limit $this->iLimit";
1460                                                                                         if (CONST_Debug) var_dump($sSQL);
1461                                                                                         $aClassPlaceIDs = array_merge($aClassPlaceIDs, $this->oDB->getCol($sSQL));
1462                                                                                 }
1463                                                                                 else
1464                                                                                 {
1465                                                                                         if (isset($aSearch['fRadius']) && $aSearch['fRadius']) $fRange = $aSearch['fRadius'];
1466
1467                                                                                         $sOrderBySQL = '';
1468                                                                                         if ($sNearPointSQL) $sOrderBySQL = "ST_Distance($sNearPointSQL, l.geometry)";
1469                                                                                         else $sOrderBySQL = "ST_Distance(l.geometry, f.geometry)";
1470
1471                                                                                         $sSQL = "select distinct l.place_id".($sOrderBysSQL?','.$sOrderBysSQL:'')." from placex as l,placex as f where ";
1472                                                                                         $sSQL .= "f.place_id in ( $sPlaceIDs) and ST_DWithin(l.geometry, f.centroid, $fRange) ";
1473                                                                                         $sSQL .= "and l.class='".$aSearch['sClass']."' and l.type='".$aSearch['sType']."' ";
1474                                                                                         if (sizeof($this->aExcludePlaceIDs))
1475                                                                                         {
1476                                                                                                 $sSQL .= " and l.place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1477                                                                                         }
1478                                                                                         if ($sCountryCodesSQL) $sSQL .= " and l.calculated_country_code in ($sCountryCodesSQL)";
1479                                                                                         if ($sOrderBy) $sSQL .= "order by ".$OrderBysSQL." asc";
1480                                                                                         if ($this->iOffset) $sSQL .= " offset $this->iOffset";
1481                                                                                         $sSQL .= " limit $this->iLimit";
1482                                                                                         if (CONST_Debug) var_dump($sSQL);
1483                                                                                         $aClassPlaceIDs = array_merge($aClassPlaceIDs, $this->oDB->getCol($sSQL));
1484                                                                                 }
1485                                                                         }
1486                                                                 }
1487
1488                                                                 $aPlaceIDs = $aClassPlaceIDs;
1489
1490                                                         }
1491
1492                                                 }
1493
1494                                                 if (PEAR::IsError($aPlaceIDs))
1495                                                 {
1496                                                         failInternalError("Could not get place IDs from tokens." ,$sSQL, $aPlaceIDs);
1497                                                 }
1498
1499                                                 if (CONST_Debug) { echo "<br><b>Place IDs:</b> "; var_Dump($aPlaceIDs); }
1500
1501                                                 foreach($aPlaceIDs as $iPlaceID)
1502                                                 {
1503                                                         $aResultPlaceIDs[$iPlaceID] = $iPlaceID;
1504                                                 }
1505                                                 if ($iQueryLoop > 20) break;
1506                                         }
1507
1508                                         if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs) && ($this->iMinAddressRank != 0 || $this->iMaxAddressRank != 30))
1509                                         {
1510                                                 // Need to verify passes rank limits before dropping out of the loop (yuk!)
1511                                                 $sSQL = "select place_id from placex where place_id in (".join(',',$aResultPlaceIDs).") ";
1512                                                 $sSQL .= "and (placex.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
1513                                                 if (14 >= $this->iMinAddressRank && 14 <= $this->iMaxAddressRank) $sSQL .= " OR (extratags->'place') = 'city'";
1514                                                 if ($this->aAddressRankList) $sSQL .= " OR placex.rank_address in (".join(',',$this->aAddressRankList).")";
1515                                                 $sSQL .= ") UNION select place_id from location_property_tiger where place_id in (".join(',',$aResultPlaceIDs).") ";
1516                                                 $sSQL .= "and (30 between $this->iMinAddressRank and $this->iMaxAddressRank ";
1517                                                 if ($this->aAddressRankList) $sSQL .= " OR 30 in (".join(',',$this->aAddressRankList).")";
1518                                                 $sSQL .= ")";
1519                                                 if (CONST_Debug) var_dump($sSQL);
1520                                                 $aResultPlaceIDs = $this->oDB->getCol($sSQL);
1521                                         }
1522
1523                                         //exit;
1524                                         if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs)) break;
1525                                         if ($iGroupLoop > 4) break;
1526                                         if ($iQueryLoop > 30) break;
1527                                 }
1528
1529                                 // Did we find anything?
1530                                 if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs))
1531                                 {
1532                                         $aSearchResults = $this->getDetails($aResultPlaceIDs);
1533                                 }
1534
1535                         }
1536                         else
1537                         {
1538                                 // Just interpret as a reverse geocode
1539                                 $iPlaceID = geocodeReverse((float)$this->aNearPoint[0], (float)$this->aNearPoint[1]);
1540                                 if ($iPlaceID)
1541                                         $aSearchResults = $this->getDetails(array($iPlaceID));
1542                                 else
1543                                         $aSearchResults = array();
1544                         }
1545
1546                         // No results? Done
1547                         if (!sizeof($aSearchResults))
1548                         {
1549                                 if ($this->bFallback)
1550                                 {
1551                                         if ($this->fallbackStructuredQuery())
1552                                         {
1553                                                 return $this->lookup();
1554                                         }
1555                                 }
1556
1557                                 return array();
1558                         }
1559
1560                         $aClassType = getClassTypesWithImportance();
1561                         $aRecheckWords = preg_split('/\b[\s,\\-]*/u',$sQuery);
1562                         foreach($aRecheckWords as $i => $sWord)
1563                         {
1564                                 if (!$sWord) unset($aRecheckWords[$i]);
1565                         }
1566
1567                         foreach($aSearchResults as $iResNum => $aResult)
1568                         {
1569                                 if (CONST_Search_AreaPolygons)
1570                                 {
1571                                         // Get the bounding box and outline polygon
1572                                         $sSQL = "select place_id,0 as numfeatures,st_area(geometry) as area,";
1573                                         $sSQL .= "ST_Y(centroid) as centrelat,ST_X(centroid) as centrelon,";
1574                                         $sSQL .= "ST_Y(ST_PointN(ST_ExteriorRing(Box2D(geometry)),4)) as minlat,ST_Y(ST_PointN(ST_ExteriorRing(Box2D(geometry)),2)) as maxlat,";
1575                                         $sSQL .= "ST_X(ST_PointN(ST_ExteriorRing(Box2D(geometry)),1)) as minlon,ST_X(ST_PointN(ST_ExteriorRing(Box2D(geometry)),3)) as maxlon";
1576                                         if ($this->bIncludePolygonAsGeoJSON) $sSQL .= ",ST_AsGeoJSON(geometry) as asgeojson";
1577                                         if ($this->bIncludePolygonAsKML) $sSQL .= ",ST_AsKML(geometry) as askml";
1578                                         if ($this->bIncludePolygonAsSVG) $sSQL .= ",ST_AsSVG(geometry) as assvg";
1579                                         if ($this->bIncludePolygonAsText || $this->bIncludePolygonAsPoints) $sSQL .= ",ST_AsText(geometry) as astext";
1580                                         $sSQL .= " from placex where place_id = ".$aResult['place_id'].' and st_geometrytype(Box2D(geometry)) = \'ST_Polygon\'';
1581                                         $aPointPolygon = $this->oDB->getRow($sSQL);
1582                                         if (PEAR::IsError($aPointPolygon))
1583                                         {
1584                                                 failInternalError("Could not get outline.", $sSQL, $aPointPolygon);
1585                                         }
1586
1587                                         if ($aPointPolygon['place_id'])
1588                                         {
1589                                                 if ($this->bIncludePolygonAsGeoJSON) $aResult['asgeojson'] = $aPointPolygon['asgeojson'];
1590                                                 if ($this->bIncludePolygonAsKML) $aResult['askml'] = $aPointPolygon['askml'];
1591                                                 if ($this->bIncludePolygonAsSVG) $aResult['assvg'] = $aPointPolygon['assvg'];
1592                                                 if ($this->bIncludePolygonAsText) $aResult['astext'] = $aPointPolygon['astext'];
1593
1594                                                 if ($aPointPolygon['centrelon'] !== null && $aPointPolygon['centrelat'] !== null )
1595                                                 {
1596                                                         $aResult['lat'] = $aPointPolygon['centrelat'];
1597                                                         $aResult['lon'] = $aPointPolygon['centrelon'];
1598                                                 }
1599
1600                                                 if ($this->bIncludePolygonAsPoints)
1601                                                 {
1602                                                         // Translate geometary string to point array
1603                                                         if (preg_match('#POLYGON\\(\\(([- 0-9.,]+)#',$aPointPolygon['astext'],$aMatch))
1604                                                         {
1605                                                                 preg_match_all('/(-?[0-9.]+) (-?[0-9.]+)/',$aMatch[1],$aPolyPoints,PREG_SET_ORDER);
1606                                                         }
1607                                                         elseif (preg_match('#MULTIPOLYGON\\(\\(\\(([- 0-9.,]+)#',$aPointPolygon['astext'],$aMatch))
1608                                                         {
1609                                                                 preg_match_all('/(-?[0-9.]+) (-?[0-9.]+)/',$aMatch[1],$aPolyPoints,PREG_SET_ORDER);
1610                                                         }
1611                                                         elseif (preg_match('#POINT\\((-?[0-9.]+) (-?[0-9.]+)\\)#',$aPointPolygon['astext'],$aMatch))
1612                                                         {
1613                                                                 $fRadius = 0.01;
1614                                                                 $iSteps = ($fRadius * 40000)^2;
1615                                                                 $fStepSize = (2*pi())/$iSteps;
1616                                                                 $aPolyPoints = array();
1617                                                                 for($f = 0; $f < 2*pi(); $f += $fStepSize)
1618                                                                 {
1619                                                                         $aPolyPoints[] = array('',$aMatch[1]+($fRadius*sin($f)),$aMatch[2]+($fRadius*cos($f)));
1620                                                                 }
1621                                                                 $aPointPolygon['minlat'] = $aPointPolygon['minlat'] - $fRadius;
1622                                                                 $aPointPolygon['maxlat'] = $aPointPolygon['maxlat'] + $fRadius;
1623                                                                 $aPointPolygon['minlon'] = $aPointPolygon['minlon'] - $fRadius;
1624                                                                 $aPointPolygon['maxlon'] = $aPointPolygon['maxlon'] + $fRadius;
1625                                                         }
1626                                                 }
1627
1628                                                 // Output data suitable for display (points and a bounding box)
1629                                                 if ($this->bIncludePolygonAsPoints && isset($aPolyPoints))
1630                                                 {
1631                                                         $aResult['aPolyPoints'] = array();
1632                                                         foreach($aPolyPoints as $aPoint)
1633                                                         {
1634                                                                 $aResult['aPolyPoints'][] = array($aPoint[1], $aPoint[2]);
1635                                                         }
1636                                                 }
1637                                                 $aResult['aBoundingBox'] = array($aPointPolygon['minlat'],$aPointPolygon['maxlat'],$aPointPolygon['minlon'],$aPointPolygon['maxlon']);
1638                                         }
1639                                 }
1640
1641                                 if ($aResult['extra_place'] == 'city')
1642                                 {
1643                                         $aResult['class'] = 'place';
1644                                         $aResult['type'] = 'city';
1645                                         $aResult['rank_search'] = 16;
1646                                 }
1647
1648                                 if (!isset($aResult['aBoundingBox']))
1649                                 {
1650                                         // Default
1651                                         $fDiameter = 0.0001;
1652
1653                                         if (isset($aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['defdiameter'])
1654                                                         && $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['defdiameter'])
1655                                         {
1656                                                 $fDiameter = $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['defzoom'];
1657                                         }
1658                                         elseif (isset($aClassType[$aResult['class'].':'.$aResult['type']]['defdiameter'])
1659                                                         && $aClassType[$aResult['class'].':'.$aResult['type']]['defdiameter'])
1660                                         {
1661                                                 $fDiameter = $aClassType[$aResult['class'].':'.$aResult['type']]['defdiameter'];
1662                                         }
1663                                         $fRadius = $fDiameter / 2;
1664
1665                                         $iSteps = max(8,min(100,$fRadius * 3.14 * 100000));
1666                                         $fStepSize = (2*pi())/$iSteps;
1667                                         $aPolyPoints = array();
1668                                         for($f = 0; $f < 2*pi(); $f += $fStepSize)
1669                                         {
1670                                                 $aPolyPoints[] = array('',$aResult['lon']+($fRadius*sin($f)),$aResult['lat']+($fRadius*cos($f)));
1671                                         }
1672                                         $aPointPolygon['minlat'] = $aResult['lat'] - $fRadius;
1673                                         $aPointPolygon['maxlat'] = $aResult['lat'] + $fRadius;
1674                                         $aPointPolygon['minlon'] = $aResult['lon'] - $fRadius;
1675                                         $aPointPolygon['maxlon'] = $aResult['lon'] + $fRadius;
1676
1677                                         // Output data suitable for display (points and a bounding box)
1678                                         if ($this->bIncludePolygonAsPoints)
1679                                         {
1680                                                 $aResult['aPolyPoints'] = array();
1681                                                 foreach($aPolyPoints as $aPoint)
1682                                                 {
1683                                                         $aResult['aPolyPoints'][] = array($aPoint[1], $aPoint[2]);
1684                                                 }
1685                                         }
1686                                         $aResult['aBoundingBox'] = array((string)$aPointPolygon['minlat'],(string)$aPointPolygon['maxlat'],(string)$aPointPolygon['minlon'],(string)$aPointPolygon['maxlon']);
1687                                 }
1688
1689                                 // Is there an icon set for this type of result?
1690                                 if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['icon'])
1691                                                 && $aClassType[$aResult['class'].':'.$aResult['type']]['icon'])
1692                                 {
1693                                         $aResult['icon'] = CONST_Website_BaseURL.'images/mapicons/'.$aClassType[$aResult['class'].':'.$aResult['type']]['icon'].'.p.20.png';
1694                                 }
1695
1696                                 if (isset($aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'])
1697                                                 && $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'])
1698                                 {
1699                                         $aResult['label'] = $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'];
1700                                 }
1701                                 elseif (isset($aClassType[$aResult['class'].':'.$aResult['type']]['label'])
1702                                                 && $aClassType[$aResult['class'].':'.$aResult['type']]['label'])
1703                                 {
1704                                         $aResult['label'] = $aClassType[$aResult['class'].':'.$aResult['type']]['label'];
1705                                 }
1706
1707                                 if ($this->bIncludeAddressDetails)
1708                                 {
1709                                         $aResult['address'] = getAddressDetails($this->oDB, $sLanguagePrefArraySQL, $aResult['place_id'], $aResult['country_code']);
1710                                         if ($aResult['extra_place'] == 'city' && !isset($aResult['address']['city']))
1711                                         {
1712                                                 $aResult['address'] = array_merge(array('city' => array_shift(array_values($aResult['address']))), $aResult['address']);
1713                                         }
1714                                 }
1715
1716                                 // Adjust importance for the number of exact string matches in the result
1717                                 $aResult['importance'] = max(0.001,$aResult['importance']);
1718                                 $iCountWords = 0;
1719                                 $sAddress = $aResult['langaddress'];
1720                                 foreach($aRecheckWords as $i => $sWord)
1721                                 {
1722                                         if (stripos($sAddress, $sWord)!==false)
1723                                         {
1724                                                 $iCountWords++;
1725                                                 if (preg_match("/(^|,)\s*$sWord\s*(,|$)/", $sAddress)) $iCountWords += 0.1;
1726                                         }
1727                                 }
1728
1729                                 $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
1730
1731                                 $aResult['name'] = $aResult['langaddress'];
1732                                 // secondary ordering (for results with same importance (the smaller the better):
1733                                 //   - approximate importance of address parts
1734                                 $aResult['foundorder'] = -$aResult['addressimportance']/10;
1735                                 //   - number of exact matches from the query
1736                                 if (isset($this->exactMatchCache[$aResult['place_id']]))
1737                                         $aResult['foundorder'] -= $this->exactMatchCache[$aResult['place_id']];
1738                                 else if (isset($this->exactMatchCache[$aResult['parent_place_id']]))
1739                                         $aResult['foundorder'] -= $this->exactMatchCache[$aResult['parent_place_id']];
1740                                 //  - importance of the class/type
1741                                 if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['importance'])
1742                                         && $aClassType[$aResult['class'].':'.$aResult['type']]['importance'])
1743                                 {
1744                                         $aResult['foundorder'] = $aResult['foundorder'] + 0.000001 * $aClassType[$aResult['class'].':'.$aResult['type']]['importance'];
1745                                 }
1746                                 else
1747                                 {
1748                                         $aResult['foundorder'] = $aResult['foundorder'] + 0.001;
1749                                 }
1750                                 $aSearchResults[$iResNum] = $aResult;
1751                         }
1752                         uasort($aSearchResults, 'byImportance');
1753
1754                         $aOSMIDDone = array();
1755                         $aClassTypeNameDone = array();
1756                         $aToFilter = $aSearchResults;
1757                         $aSearchResults = array();
1758
1759                         $bFirst = true;
1760                         foreach($aToFilter as $iResNum => $aResult)
1761                         {
1762                                 if ($aResult['type'] == 'adminitrative') $aResult['type'] = 'administrative';
1763                                 $this->aExcludePlaceIDs[$aResult['place_id']] = $aResult['place_id'];
1764                                 if ($bFirst)
1765                                 {
1766                                         $fLat = $aResult['lat'];
1767                                         $fLon = $aResult['lon'];
1768                                         if (isset($aResult['zoom'])) $iZoom = $aResult['zoom'];
1769                                         $bFirst = false;
1770                                 }
1771                                 if (!$this->bDeDupe || (!isset($aOSMIDDone[$aResult['osm_type'].$aResult['osm_id']])
1772                                                         && !isset($aClassTypeNameDone[$aResult['osm_type'].$aResult['class'].$aResult['type'].$aResult['name'].$aResult['admin_level']])))
1773                                 {
1774                                         $aOSMIDDone[$aResult['osm_type'].$aResult['osm_id']] = true;
1775                                         $aClassTypeNameDone[$aResult['osm_type'].$aResult['class'].$aResult['type'].$aResult['name'].$aResult['admin_level']] = true;
1776                                         $aSearchResults[] = $aResult;
1777                                 }
1778
1779                                 // Absolute limit on number of results
1780                                 if (sizeof($aSearchResults) >= $this->iFinalLimit) break;
1781                         }
1782
1783                         return $aSearchResults;
1784
1785                 } // end lookup()
1786
1787
1788         } // end class
1789