lib/Geocode.php

   1 <?php
   2         require_once(CONST_BasePath.'/lib/PlaceLookup.php');
   3
   4         class Geocode
   5         {
   6                 protected $oDB;
   7
   8                 protected $aLangPrefOrder = array();
   9
  10                 protected $bIncludeAddressDetails = false;
  11                 protected $bIncludeExtraTags = false;
  12                 protected $bIncludeNameDetails = false;
  13
  14                 protected $bIncludePolygonAsPoints = false;
  15                 protected $bIncludePolygonAsText = false;
  16                 protected $bIncludePolygonAsGeoJSON = false;
  17                 protected $bIncludePolygonAsKML = false;
  18                 protected $bIncludePolygonAsSVG = false;
  19                 protected $fPolygonSimplificationThreshold = 0.0;
  20
  21                 protected $aExcludePlaceIDs = array();
  22                 protected $bDeDupe = true;
  23                 protected $bReverseInPlan = false;
  24
  25                 protected $iLimit = 20;
  26                 protected $iFinalLimit = 10;
  27                 protected $iOffset = 0;
  28                 protected $bFallback = false;
  29
  30                 protected $aCountryCodes = false;
  31                 protected $aNearPoint = false;
  32
  33                 protected $bBoundedSearch = false;
  34                 protected $aViewBox = false;
  35                 protected $sViewboxSmallSQL = false;
  36                 protected $sViewboxLargeSQL = false;
  37                 protected $aRoutePoints = false;
  38
  39                 protected $iMaxRank = 20;
  40                 protected $iMinAddressRank = 0;
  41                 protected $iMaxAddressRank = 30;
  42                 protected $aAddressRankList = array();
  43                 protected $exactMatchCache = array();
  44
  45                 protected $sAllowedTypesSQLList = false;
  46
  47                 protected $sQuery = false;
  48                 protected $aStructuredQuery = false;
  49
  50                 function Geocode(&$oDB)
  51                 {
  52                         $this->oDB =& $oDB;
  53                 }
  54
  55                 function setReverseInPlan($bReverse)
  56                 {
  57                         $this->bReverseInPlan = $bReverse;
  58                 }
  59
  60                 function setLanguagePreference($aLangPref)
  61                 {
  62                         $this->aLangPrefOrder = $aLangPref;
  63                 }
  64
  65                 function setIncludeAddressDetails($bAddressDetails = true)
  66                 {
  67                         $this->bIncludeAddressDetails = (bool)$bAddressDetails;
  68                 }
  69
  70                 function getIncludeAddressDetails()
  71                 {
  72                         return $this->bIncludeAddressDetails;
  73                 }
  74
  75                 function getIncludeExtraTags()
  76                 {
  77                         return $this->bIncludeExtraTags;
  78                 }
  79
  80                 function getIncludeNameDetails()
  81                 {
  82                         return $this->bIncludeNameDetails;
  83                 }
  84
  85                 function setIncludePolygonAsPoints($b = true)
  86                 {
  87                         $this->bIncludePolygonAsPoints = $b;
  88                 }
  89
  90                 function getIncludePolygonAsPoints()
  91                 {
  92                         return $this->bIncludePolygonAsPoints;
  93                 }
  94
  95                 function setIncludePolygonAsText($b = true)
  96                 {
  97                         $this->bIncludePolygonAsText = $b;
  98                 }
  99
 100                 function getIncludePolygonAsText()
 101                 {
 102                         return $this->bIncludePolygonAsText;
 103                 }
 104
 105                 function setIncludePolygonAsGeoJSON($b = true)
 106                 {
 107                         $this->bIncludePolygonAsGeoJSON = $b;
 108                 }
 109
 110                 function setIncludePolygonAsKML($b = true)
 111                 {
 112                         $this->bIncludePolygonAsKML = $b;
 113                 }
 114
 115                 function setIncludePolygonAsSVG($b = true)
 116                 {
 117                         $this->bIncludePolygonAsSVG = $b;
 118                 }
 119
 120                 function setPolygonSimplificationThreshold($f)
 121                 {
 122                         $this->fPolygonSimplificationThreshold = $f;
 123                 }
 124
 125                 function setDeDupe($bDeDupe = true)
 126                 {
 127                         $this->bDeDupe = (bool)$bDeDupe;
 128                 }
 129
 130                 function setLimit($iLimit = 10)
 131                 {
 132                         if ($iLimit > 50) $iLimit = 50;
 133                         if ($iLimit < 1) $iLimit = 1;
 134
 135                         $this->iFinalLimit = $iLimit;
 136                         $this->iLimit = $this->iFinalLimit + min($this->iFinalLimit, 10);
 137                 }
 138
 139                 function setOffset($iOffset = 0)
 140                 {
 141                         $this->iOffset = $iOffset;
 142                 }
 143
 144                 function setFallback($bFallback = true)
 145                 {
 146                         $this->bFallback = (bool)$bFallback;
 147                 }
 148
 149                 function setExcludedPlaceIDs($a)
 150                 {
 151                         // TODO: force to int
 152                         $this->aExcludePlaceIDs = $a;
 153                 }
 154
 155                 function getExcludedPlaceIDs()
 156                 {
 157                         return $this->aExcludePlaceIDs;
 158                 }
 159
 160                 function setBounded($bBoundedSearch = true)
 161                 {
 162                         $this->bBoundedSearch = (bool)$bBoundedSearch;
 163                 }
 164
 165                 function setViewBox($fLeft, $fBottom, $fRight, $fTop)
 166                 {
 167                         $this->aViewBox = array($fLeft, $fBottom, $fRight, $fTop);
 168                 }
 169
 170                 function getViewBoxString()
 171                 {
 172                         if (!$this->aViewBox) return null;
 173                         return $this->aViewBox[0].','.$this->aViewBox[3].','.$this->aViewBox[2].','.$this->aViewBox[1];
 174                 }
 175
 176                 function setRoute($aRoutePoints)
 177                 {
 178                         $this->aRoutePoints = $aRoutePoints;
 179                 }
 180
 181                 function setFeatureType($sFeatureType)
 182                 {
 183                         switch($sFeatureType)
 184                         {
 185                         case 'country':
 186                                 $this->setRankRange(4, 4);
 187                                 break;
 188                         case 'state':
 189                                 $this->setRankRange(8, 8);
 190                                 break;
 191                         case 'city':
 192                                 $this->setRankRange(14, 16);
 193                                 break;
 194                         case 'settlement':
 195                                 $this->setRankRange(8, 20);
 196                                 break;
 197                         }
 198                 }
 199
 200                 function setRankRange($iMin, $iMax)
 201                 {
 202                         $this->iMinAddressRank = (int)$iMin;
 203                         $this->iMaxAddressRank = (int)$iMax;
 204                 }
 205
 206                 function setNearPoint($aNearPoint, $fRadiusDeg = 0.1)
 207                 {
 208                         $this->aNearPoint = array((float)$aNearPoint[0], (float)$aNearPoint[1], (float)$fRadiusDeg);
 209                 }
 210
 211                 function setCountryCodesList($aCountryCodes)
 212                 {
 213                         $this->aCountryCodes = $aCountryCodes;
 214                 }
 215
 216                 function setQuery($sQueryString)
 217                 {
 218                         $this->sQuery = $sQueryString;
 219                         $this->aStructuredQuery = false;
 220                 }
 221
 222                 function getQueryString()
 223                 {
 224                         return $this->sQuery;
 225                 }
 226
 227
 228                 function loadParamArray($aParams)
 229                 {
 230                         if (isset($aParams['addressdetails'])) $this->bIncludeAddressDetails = (bool)$aParams['addressdetails'];
 231                         if ((float) CONST_Postgresql_Version > 9.2)
 232                         {
 233                                 if (isset($aParams['extratags'])) $this->bIncludeExtraTags = (bool)$aParams['extratags'];
 234                                 if (isset($aParams['namedetails'])) $this->bIncludeNameDetails = (bool)$aParams['namedetails'];
 235                         }
 236                         if (isset($aParams['bounded'])) $this->bBoundedSearch = (bool)$aParams['bounded'];
 237                         if (isset($aParams['dedupe'])) $this->bDeDupe = (bool)$aParams['dedupe'];
 238
 239                         if (isset($aParams['limit'])) $this->setLimit((int)$aParams['limit']);
 240                         if (isset($aParams['offset'])) $this->iOffset = (int)$aParams['offset'];
 241
 242                         if (isset($aParams['fallback'])) $this->bFallback = (bool)$aParams['fallback'];
 243
 244                         // List of excluded Place IDs - used for more acurate pageing
 245                         if (isset($aParams['exclude_place_ids']) && $aParams['exclude_place_ids'])
 246                         {
 247                                 foreach(explode(',',$aParams['exclude_place_ids']) as $iExcludedPlaceID)
 248                                 {
 249                                         $iExcludedPlaceID = (int)$iExcludedPlaceID;
 250                                         if ($iExcludedPlaceID)
 251                                                 $aExcludePlaceIDs[$iExcludedPlaceID] = $iExcludedPlaceID;
 252                                 }
 253
 254                                 if (isset($aExcludePlaceIDs))
 255                                         $this->aExcludePlaceIDs = $aExcludePlaceIDs;
 256                         }
 257
 258                         // Only certain ranks of feature
 259                         if (isset($aParams['featureType'])) $this->setFeatureType($aParams['featureType']);
 260                         if (isset($aParams['featuretype'])) $this->setFeatureType($aParams['featuretype']);
 261
 262                         // Country code list
 263                         if (isset($aParams['countrycodes']))
 264                         {
 265                                 $aCountryCodes = array();
 266                                 foreach(explode(',',$aParams['countrycodes']) as $sCountryCode)
 267                                 {
 268                                         if (preg_match('/^[a-zA-Z][a-zA-Z]$/', $sCountryCode))
 269                                         {
 270                                                 $aCountryCodes[] = strtolower($sCountryCode);
 271                                         }
 272                                 }
 273                                 $this->aCountryCodes = $aCountryCodes;
 274                         }
 275
 276                         if (isset($aParams['viewboxlbrt']) && $aParams['viewboxlbrt'])
 277                         {
 278                                 $aCoOrdinatesLBRT = explode(',',$aParams['viewboxlbrt']);
 279                                 $this->setViewBox($aCoOrdinatesLBRT[0], $aCoOrdinatesLBRT[1], $aCoOrdinatesLBRT[2], $aCoOrdinatesLBRT[3]);
 280                         }
 281                         else if (isset($aParams['viewbox']) && $aParams['viewbox'])
 282                         {
 283                                 $aCoOrdinatesLTRB = explode(',',$aParams['viewbox']);
 284                                 $this->setViewBox($aCoOrdinatesLTRB[0], $aCoOrdinatesLTRB[3], $aCoOrdinatesLTRB[2], $aCoOrdinatesLTRB[1]);
 285                         }
 286
 287                         if (isset($aParams['route']) && $aParams['route'] && isset($aParams['routewidth']) && $aParams['routewidth'])
 288                         {
 289                                 $aPoints = explode(',',$aParams['route']);
 290                                 if (sizeof($aPoints) % 2 != 0)
 291                                 {
 292                                         userError("Uneven number of points");
 293                                         exit;
 294                                 }
 295                                 $fPrevCoord = false;
 296                                 $aRoute = array();
 297                                 foreach($aPoints as $i => $fPoint)
 298                                 {
 299                                         if ($i%2)
 300                                         {
 301                                                 $aRoute[] = array((float)$fPoint, $fPrevCoord);
 302                                         }
 303                                         else
 304                                         {
 305                                                 $fPrevCoord = (float)$fPoint;
 306                                         }
 307                                 }
 308                                 $this->aRoutePoints = $aRoute;
 309                         }
 310                 }
 311
 312                 function setQueryFromParams($aParams)
 313                 {
 314                         // Search query
 315                         $sQuery = (isset($aParams['q'])?trim($aParams['q']):'');
 316                         if (!$sQuery)
 317                         {
 318                                 $this->setStructuredQuery(@$aParams['amenity'], @$aParams['street'], @$aParams['city'], @$aParams['county'], @$aParams['state'], @$aParams['country'], @$aParams['postalcode']);
 319                                 $this->setReverseInPlan(false);
 320                         }
 321                         else
 322                         {
 323                                 $this->setQuery($sQuery);
 324                         }
 325                 }
 326
 327                 function loadStructuredAddressElement($sValue, $sKey, $iNewMinAddressRank, $iNewMaxAddressRank, $aItemListValues)
 328                 {
 329                         $sValue = trim($sValue);
 330                         if (!$sValue) return false;
 331                         $this->aStructuredQuery[$sKey] = $sValue;
 332                         if ($this->iMinAddressRank == 0 && $this->iMaxAddressRank == 30)
 333                         {
 334                                 $this->iMinAddressRank = $iNewMinAddressRank;
 335                                 $this->iMaxAddressRank = $iNewMaxAddressRank;
 336                         }
 337                         if ($aItemListValues) $this->aAddressRankList = array_merge($this->aAddressRankList, $aItemListValues);
 338                         return true;
 339                 }
 340
 341                 function setStructuredQuery($sAmentiy = false, $sStreet = false, $sCity = false, $sCounty = false, $sState = false, $sCountry = false, $sPostalCode = false)
 342                 {
 343                         $this->sQuery = false;
 344
 345                         // Reset
 346                         $this->iMinAddressRank = 0;
 347                         $this->iMaxAddressRank = 30;
 348                         $this->aAddressRankList = array();
 349
 350                         $this->aStructuredQuery = array();
 351                         $this->sAllowedTypesSQLList = '';
 352
 353                         $this->loadStructuredAddressElement($sAmentiy, 'amenity', 26, 30, false);
 354                         $this->loadStructuredAddressElement($sStreet, 'street', 26, 30, false);
 355                         $this->loadStructuredAddressElement($sCity, 'city', 14, 24, false);
 356                         $this->loadStructuredAddressElement($sCounty, 'county', 9, 13, false);
 357                         $this->loadStructuredAddressElement($sState, 'state', 8, 8, false);
 358                         $this->loadStructuredAddressElement($sPostalCode, 'postalcode' , 5, 11, array(5, 11));
 359                         $this->loadStructuredAddressElement($sCountry, 'country', 4, 4, false);
 360
 361                         if (sizeof($this->aStructuredQuery) > 0)
 362                         {
 363                                 $this->sQuery = join(', ', $this->aStructuredQuery);
 364                                 if ($this->iMaxAddressRank < 30)
 365                                 {
 366                                         $sAllowedTypesSQLList = '(\'place\',\'boundary\')';
 367                                 }
 368                         }
 369                 }
 370
 371                 function fallbackStructuredQuery()
 372                 {
 373                         if (!$this->aStructuredQuery) return false;
 374
 375                         $aParams = $this->aStructuredQuery;
 376
 377                         if (sizeof($aParams) == 1) return false;
 378
 379                         $aOrderToFallback = array('postalcode', 'street', 'city', 'county', 'state');
 380
 381                         foreach($aOrderToFallback as $sType)
 382                         {
 383                                 if (isset($aParams[$sType]))
 384                                 {
 385                                         unset($aParams[$sType]);
 386                                         $this->setStructuredQuery(@$aParams['amenity'], @$aParams['street'], @$aParams['city'], @$aParams['county'], @$aParams['state'], @$aParams['country'], @$aParams['postalcode']);
 387                                         return true;
 388                                 }
 389                         }
 390
 391                         return false;
 392                 }
 393
 394                 function getDetails($aPlaceIDs)
 395                 {
 396             //$aPlaceIDs is an array with key: placeID and value: tiger-housenumber, if found, else -1
 397                         if (sizeof($aPlaceIDs) == 0)  return array();
 398
 399                         $sLanguagePrefArraySQL = "ARRAY[".join(',',array_map("getDBQuoted",$this->aLangPrefOrder))."]";
 400
 401                         // Get the details for display (is this a redundant extra step?)
 402                         $sPlaceIDs = join(',',array_keys($aPlaceIDs));
 403
 404                         $sImportanceSQL = '';
 405                         if ($this->sViewboxSmallSQL) $sImportanceSQL .= " case when ST_Contains($this->sViewboxSmallSQL, ST_Collect(centroid)) THEN 1 ELSE 0.75 END * ";
 406                         if ($this->sViewboxLargeSQL) $sImportanceSQL .= " case when ST_Contains($this->sViewboxLargeSQL, ST_Collect(centroid)) THEN 1 ELSE 0.75 END * ";
 407
 408                         $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,";
 409                         $sSQL .= "get_address_by_language(place_id, -1, $sLanguagePrefArraySQL) as langaddress,";
 410                         $sSQL .= "get_name_by_language(name, $sLanguagePrefArraySQL) as placename,";
 411                         $sSQL .= "get_name_by_language(name, ARRAY['ref']) as ref,";
 412                         if ($this->bIncludeExtraTags) $sSQL .= "hstore_to_json(extratags)::text as extra,";
 413                         if ($this->bIncludeNameDetails) $sSQL .= "hstore_to_json(name)::text as names,";
 414                         $sSQL .= "avg(ST_X(centroid)) as lon,avg(ST_Y(centroid)) as lat, ";
 415                         $sSQL .= $sImportanceSQL."coalesce(importance,0.75-(rank_search::float/40)) as importance, ";
 416                         $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, ";
 417                         $sSQL .= "(extratags->'place') as extra_place ";
 418                         $sSQL .= "from placex where place_id in ($sPlaceIDs) ";
 419                         $sSQL .= "and (placex.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
 420                         if (14 >= $this->iMinAddressRank && 14 <= $this->iMaxAddressRank) $sSQL .= " OR (extratags->'place') = 'city'";
 421                         if ($this->aAddressRankList) $sSQL .= " OR placex.rank_address in (".join(',',$this->aAddressRankList).")";
 422                         $sSQL .= ") ";
 423                         if ($this->sAllowedTypesSQLList) $sSQL .= "and placex.class in $this->sAllowedTypesSQLList ";
 424                         $sSQL .= "and linked_place_id is null ";
 425                         $sSQL .= "group by osm_type,osm_id,class,type,admin_level,rank_search,rank_address,calculated_country_code,importance";
 426                         if (!$this->bDeDupe) $sSQL .= ",place_id";
 427                         $sSQL .= ",langaddress ";
 428                         $sSQL .= ",placename ";
 429                         $sSQL .= ",ref ";
 430                         if ($this->bIncludeExtraTags) $sSQL .= ",extratags";
 431                         if ($this->bIncludeNameDetails) $sSQL .= ",name";
 432                         $sSQL .= ",extratags->'place' ";
 433
 434                         if (30 >= $this->iMinAddressRank && 30 <= $this->iMaxAddressRank)
 435                         {
 436                                 //query also location_property_tiger and location_property_aux
 437                 //Tiger search only if a housenumber was searched and if it was found (i.e. aPlaceIDs[placeID] = housenumber != -1) (realized through a join)
 438                 //only Tiger housenumbers need to be interpolated, because they are saved as lines with start- and endnumber, the common osm housenumbers are usually saved as points
 439                 $sHousenumbers = "";
 440                 $i=0;
 441                 $length=count($aPlaceIDs);
 442                 foreach($aPlaceIDs as $placeID => $housenumber){
 443                     $i++;
 444                     $sHousenumbers .= "(".$placeID.",".$housenumber.")";
 445                     if($i<$length)
 446                         $sHousenumbers .= ",";
 447                 }
 448
 449                 $sSQL .= "union ";
 450                 $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";
 451                 $sSQL .= ", get_address_by_language(place_id, housenumber_for_place, $sLanguagePrefArraySQL) as langaddress ";
 452                 $sSQL .= ", null as placename";
 453                 $sSQL .= ", null as ref";
 454                 if ($this->bIncludeExtraTags) $sSQL .= ", null as extra";
 455                 if ($this->bIncludeNameDetails) $sSQL .= ", null as names";
 456                 $sSQL .= ", avg(st_x(point)) as lon, avg(st_y(point)) as lat";
 457                 $sSQL .= $sImportanceSQL.", -1.15 as importance ";
 458                 $sSQL .= ", (select max(p.importance*(p.rank_address+2)) from place_addressline s, placex p where s.place_id = min(blub.parent_place_id) and p.place_id = s.address_place_id and s.isaddress and p.importance is not null) as addressimportance ";
 459                 $sSQL .= ", null as extra_place ";
 460                 $sSQL .= " from (select place_id";
 461                 //interpolate the Tiger housenumbers here
 462                 $sSQL .= ",ST_LineInterpolatePoint(linegeo, (housenumber_for_place-startnumber::float)/(endnumber-startnumber)::float) as point, parent_place_id, housenumber_for_place ";
 463                 $sSQL .= "from (location_property_tiger ";
 464                 $sSQL .= " join (values ".$sHousenumbers.") as housenumbers(place_id,housenumber_for_place) using(place_id)) ";
 465                 $sSQL .= " where housenumber_for_place>=0 and 30 between $this->iMinAddressRank and $this->iMaxAddressRank) as blub"; //postgres wants an alias here
 466                 $sSQL .= " group by place_id, housenumber_for_place"; //is this group by really needed?, place_id + housenumber (in combination) are unique
 467                 if (!$this->bDeDupe) $sSQL .= ",place_id ";
 468
 469                                 $sSQL .= " union ";
 470                                 $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,";
 471                                 $sSQL .= "get_address_by_language(place_id, -1, $sLanguagePrefArraySQL) as langaddress,";
 472                                 $sSQL .= "null as placename,";
 473                                 $sSQL .= "null as ref,";
 474                                 if ($this->bIncludeExtraTags) $sSQL .= "null as extra,";
 475                                 if ($this->bIncludeNameDetails) $sSQL .= "null as names,";
 476                                 $sSQL .= "avg(ST_X(centroid)) as lon,avg(ST_Y(centroid)) as lat, ";
 477                                 $sSQL .= $sImportanceSQL."-1.10 as importance, ";
 478                                 $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, ";
 479                                 $sSQL .= "null as extra_place ";
 480                                 $sSQL .= "from location_property_aux where place_id in ($sPlaceIDs) ";
 481                                 $sSQL .= "and 30 between $this->iMinAddressRank and $this->iMaxAddressRank ";
 482                                 $sSQL .= "group by place_id";
 483                                 if (!$this->bDeDupe) $sSQL .= ",place_id";
 484                                 $sSQL .= ",get_address_by_language(place_id, -1, $sLanguagePrefArraySQL) ";
 485                         }
 486
 487                         $sSQL .= " order by importance desc";
 488                         if (CONST_Debug) { echo "<hr>"; var_dump($sSQL); }
 489                         $aSearchResults = $this->oDB->getAll($sSQL);
 490
 491                         if (PEAR::IsError($aSearchResults))
 492                         {
 493                                 failInternalError("Could not get details for place.", $sSQL, $aSearchResults);
 494                         }
 495
 496                         return $aSearchResults;
 497                 }
 498
 499                 function getGroupedSearches($aSearches, $aPhraseTypes, $aPhrases, $aValidTokens, $aWordFrequencyScores, $bStructuredPhrases)
 500                 {
 501                         /*
 502                                  Calculate all searches using aValidTokens i.e.
 503                                  'Wodsworth Road, Sheffield' =>
 504
 505                                  Phrase Wordset
 506                                  0      0       (wodsworth road)
 507                                  0      1       (wodsworth)(road)
 508                                  1      0       (sheffield)
 509
 510                                  Score how good the search is so they can be ordered
 511                          */
 512                         foreach($aPhrases as $iPhrase => $sPhrase)
 513                         {
 514                                 $aNewPhraseSearches = array();
 515                                 if ($bStructuredPhrases) $sPhraseType = $aPhraseTypes[$iPhrase];
 516                                 else $sPhraseType = '';
 517
 518                                 foreach($aPhrases[$iPhrase]['wordsets'] as $iWordSet => $aWordset)
 519                                 {
 520                                         // Too many permutations - too expensive
 521                                         if ($iWordSet > 120) break;
 522
 523                                         $aWordsetSearches = $aSearches;
 524
 525                                         // Add all words from this wordset
 526                                         foreach($aWordset as $iToken => $sToken)
 527                                         {
 528                                                 //echo "<br><b>$sToken</b>";
 529                                                 $aNewWordsetSearches = array();
 530
 531                                                 foreach($aWordsetSearches as $aCurrentSearch)
 532                                                 {
 533                                                         //echo "<i>";
 534                                                         //var_dump($aCurrentSearch);
 535                                                         //echo "</i>";
 536
 537                                                         // If the token is valid
 538                                                         if (isset($aValidTokens[' '.$sToken]))
 539                                                         {
 540                                                                 foreach($aValidTokens[' '.$sToken] as $aSearchTerm)
 541                                                                 {
 542                                                                         $aSearch = $aCurrentSearch;
 543                                                                         $aSearch['iSearchRank']++;
 544                                                                         if (($sPhraseType == '' || $sPhraseType == 'country') && !empty($aSearchTerm['country_code']) && $aSearchTerm['country_code'] != '0')
 545                                                                         {
 546                                                                                 if ($aSearch['sCountryCode'] === false)
 547                                                                                 {
 548                                                                                         $aSearch['sCountryCode'] = strtolower($aSearchTerm['country_code']);
 549                                                                                         // Country is almost always at the end of the string - increase score for finding it anywhere else (optimisation)
 550                                                                                         if (($iToken+1 != sizeof($aWordset) || $iPhrase+1 != sizeof($aPhrases)))
 551                                                                                         {
 552                                                                                                 $aSearch['iSearchRank'] += 5;
 553                                                                                         }
 554                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 555                                                                                 }
 556                                                                         }
 557                                                                         elseif (isset($aSearchTerm['lat']) && $aSearchTerm['lat'] !== '' && $aSearchTerm['lat'] !== null)
 558                                                                         {
 559                                                                                 if ($aSearch['fLat'] === '')
 560                                                                                 {
 561                                                                                         $aSearch['fLat'] = $aSearchTerm['lat'];
 562                                                                                         $aSearch['fLon'] = $aSearchTerm['lon'];
 563                                                                                         $aSearch['fRadius'] = $aSearchTerm['radius'];
 564                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 565                                                                                 }
 566                                                                         }
 567                                                                         elseif ($sPhraseType == 'postalcode')
 568                                                                         {
 569                                                                                 // 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
 570                                                                                 if (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
 571                                                                                 {
 572                                                                                         // If we already have a name try putting the postcode first
 573                                                                                         if (sizeof($aSearch['aName']))
 574                                                                                         {
 575                                                                                                 $aNewSearch = $aSearch;
 576                                                                                                 $aNewSearch['aAddress'] = array_merge($aNewSearch['aAddress'], $aNewSearch['aName']);
 577                                                                                                 $aNewSearch['aName'] = array();
 578                                                                                                 $aNewSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 579                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aNewSearch;
 580                                                                                         }
 581
 582                                                                                         if (sizeof($aSearch['aName']))
 583                                                                                         {
 584                                                                                                 if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strpos($sToken, ' ') !== false))
 585                                                                                                 {
 586                                                                                                         $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 587                                                                                                 }
 588                                                                                                 else
 589                                                                                                 {
 590                                                                                                         $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 591                                                                                                         $aSearch['iSearchRank'] += 1000; // skip;
 592                                                                                                 }
 593                                                                                         }
 594                                                                                         else
 595                                                                                         {
 596                                                                                                 $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 597                                                                                                 //$aSearch['iNamePhrase'] = $iPhrase;
 598                                                                                         }
 599                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 600                                                                                 }
 601
 602                                                                         }
 603                                                                         elseif (($sPhraseType == '' || $sPhraseType == 'street') && $aSearchTerm['class'] == 'place' && $aSearchTerm['type'] == 'house')
 604                                                                         {
 605                                                                                 if ($aSearch['sHouseNumber'] === '')
 606                                                                                 {
 607                                                                                         $aSearch['sHouseNumber'] = $sToken;
 608                                                                                         // sanity check: if the housenumber is not mainly made
 609                                                                                         // up of numbers, add a penalty
 610                                                                                         if (preg_match_all("/[^0-9]/", $sToken, $aMatches) > 2) $aSearch['iSearchRank']++;
 611                                                                                         // also housenumbers should appear in the first or second phrase
 612                                                                                         if ($iPhrase > 1) $aSearch['iSearchRank'] += 1;
 613                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 614                                                                                         /*
 615                                                                                         // Fall back to not searching for this item (better than nothing)
 616                                                                                         $aSearch = $aCurrentSearch;
 617                                                                                         $aSearch['iSearchRank'] += 1;
 618                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 619                                                                                          */
 620                                                                                 }
 621                                                                         }
 622                                                                         elseif ($sPhraseType == '' && $aSearchTerm['class'] !== '' && $aSearchTerm['class'] !== null)
 623                                                                         {
 624                                                                                 if ($aSearch['sClass'] === '')
 625                                                                                 {
 626                                                                                         $aSearch['sOperator'] = $aSearchTerm['operator'];
 627                                                                                         $aSearch['sClass'] = $aSearchTerm['class'];
 628                                                                                         $aSearch['sType'] = $aSearchTerm['type'];
 629                                                                                         if (sizeof($aSearch['aName'])) $aSearch['sOperator'] = 'name';
 630                                                                                         else $aSearch['sOperator'] = 'near'; // near = in for the moment
 631                                                                                         if (strlen($aSearchTerm['operator']) == 0) $aSearch['iSearchRank'] += 1;
 632
 633                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 634                                                                                 }
 635                                                                         }
 636                                                                         elseif (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
 637                                                                         {
 638                                                                                 if (sizeof($aSearch['aName']))
 639                                                                                 {
 640                                                                                         if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strpos($sToken, ' ') !== false))
 641                                                                                         {
 642                                                                                                 $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 643                                                                                         }
 644                                                                                         else
 645                                                                                         {
 646                                                                                                 $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 647                                                                                                 $aSearch['iSearchRank'] += 1000; // skip;
 648                                                                                         }
 649                                                                                 }
 650                                                                                 else
 651                                                                                 {
 652                                                                                         $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 653                                                                                         //$aSearch['iNamePhrase'] = $iPhrase;
 654                                                                                 }
 655                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 656                                                                         }
 657                                                                 }
 658                                                         }
 659                                                         // Look for partial matches.
 660                                                         // Note that there is no point in adding country terms here
 661                                                         // because country are omitted in the address.
 662                                                         if (isset($aValidTokens[$sToken]) && $sPhraseType != 'country')
 663                                                         {
 664                                                                 // Allow searching for a word - but at extra cost
 665                                                                 foreach($aValidTokens[$sToken] as $aSearchTerm)
 666                                                                 {
 667                                                                         if (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
 668                                                                         {
 669                                                                                 if ((!$bStructuredPhrases || $iPhrase > 0) && sizeof($aCurrentSearch['aName']) && strpos($sToken, ' ') === false)
 670                                                                                 {
 671                                                                                         $aSearch = $aCurrentSearch;
 672                                                                                         $aSearch['iSearchRank'] += 1;
 673                                                                                         if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency)
 674                                                                                         {
 675                                                                                                 $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 676                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 677                                                                                         }
 678                                                                                         elseif (isset($aValidTokens[' '.$sToken])) // revert to the token version?
 679                                                                                         {
 680                                                                                                 $aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 681                                                                                                 $aSearch['iSearchRank'] += 1;
 682                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 683                                                                                                 foreach($aValidTokens[' '.$sToken] as $aSearchTermToken)
 684                                                                                                 {
 685                                                                                                         if (empty($aSearchTermToken['country_code'])
 686                                                                                                                         && empty($aSearchTermToken['lat'])
 687                                                                                                                         && empty($aSearchTermToken['class']))
 688                                                                                                         {
 689                                                                                                                 $aSearch = $aCurrentSearch;
 690                                                                                                                 $aSearch['iSearchRank'] += 1;
 691                                                                                                                 $aSearch['aAddress'][$aSearchTermToken['word_id']] = $aSearchTermToken['word_id'];
 692                                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 693                                                                                                         }
 694                                                                                                 }
 695                                                                                         }
 696                                                                                         else
 697                                                                                         {
 698                                                                                                 $aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 699                                                                                                 if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
 700                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 701                                                                                         }
 702                                                                                 }
 703
 704                                                                                 if (!sizeof($aCurrentSearch['aName']) || $aCurrentSearch['iNamePhrase'] == $iPhrase)
 705                                                                                 {
 706                                                                                         $aSearch = $aCurrentSearch;
 707                                                                                         $aSearch['iSearchRank'] += 1;
 708                                                                                         if (!sizeof($aCurrentSearch['aName'])) $aSearch['iSearchRank'] += 1;
 709                                                                                         if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
 710                                                                                         if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency)
 711                                                                                                 $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 712                                                                                         else
 713                                                                                                 $aSearch['aNameNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 714                                                                                         $aSearch['iNamePhrase'] = $iPhrase;
 715                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 716                                                                                 }
 717                                                                         }
 718                                                                 }
 719                                                         }
 720                                                         else
 721                                                         {
 722                                                                 // Allow skipping a word - but at EXTREAM cost
 723                                                                 //$aSearch = $aCurrentSearch;
 724                                                                 //$aSearch['iSearchRank']+=100;
 725                                                                 //$aNewWordsetSearches[] = $aSearch;
 726                                                         }
 727                                                 }
 728                                                 // Sort and cut
 729                                                 usort($aNewWordsetSearches, 'bySearchRank');
 730                                                 $aWordsetSearches = array_slice($aNewWordsetSearches, 0, 50);
 731                                         }
 732                                         //var_Dump('<hr>',sizeof($aWordsetSearches)); exit;
 733
 734                                         $aNewPhraseSearches = array_merge($aNewPhraseSearches, $aNewWordsetSearches);
 735                                         usort($aNewPhraseSearches, 'bySearchRank');
 736
 737                                         $aSearchHash = array();
 738                                         foreach($aNewPhraseSearches as $iSearch => $aSearch)
 739                                         {
 740                                                 $sHash = serialize($aSearch);
 741                                                 if (isset($aSearchHash[$sHash])) unset($aNewPhraseSearches[$iSearch]);
 742                                                 else $aSearchHash[$sHash] = 1;
 743                                         }
 744
 745                                         $aNewPhraseSearches = array_slice($aNewPhraseSearches, 0, 50);
 746                                 }
 747
 748                                 // Re-group the searches by their score, junk anything over 20 as just not worth trying
 749                                 $aGroupedSearches = array();
 750                                 foreach($aNewPhraseSearches as $aSearch)
 751                                 {
 752                                         if ($aSearch['iSearchRank'] < $this->iMaxRank)
 753                                         {
 754                                                 if (!isset($aGroupedSearches[$aSearch['iSearchRank']])) $aGroupedSearches[$aSearch['iSearchRank']] = array();
 755                                                 $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
 756                                         }
 757                                 }
 758                                 ksort($aGroupedSearches);
 759
 760                                 $iSearchCount = 0;
 761                                 $aSearches = array();
 762                                 foreach($aGroupedSearches as $iScore => $aNewSearches)
 763                                 {
 764                                         $iSearchCount += sizeof($aNewSearches);
 765                                         $aSearches = array_merge($aSearches, $aNewSearches);
 766                                         if ($iSearchCount > 50) break;
 767                                 }
 768
 769                                 //if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
 770
 771                         }
 772                         return $aGroupedSearches;
 773
 774                 }
 775
 776                 /* Perform the actual query lookup.
 777
 778                         Returns an ordered list of results, each with the following fields:
 779                                 osm_type: type of corresponding OSM object
 780                                                         N - node
 781                                                         W - way
 782                                                         R - relation
 783                                                         P - postcode (internally computed)
 784                                 osm_id: id of corresponding OSM object
 785                                 class: general object class (corresponds to tag key of primary OSM tag)
 786                                 type: subclass of object (corresponds to tag value of primary OSM tag)
 787                                 admin_level: see http://wiki.openstreetmap.org/wiki/Admin_level
 788                                 rank_search: rank in search hierarchy
 789                                                         (see also http://wiki.openstreetmap.org/wiki/Nominatim/Development_overview#Country_to_street_level)
 790                                 rank_address: rank in address hierarchy (determines orer in address)
 791                                 place_id: internal key (may differ between different instances)
 792                                 country_code: ISO country code
 793                                 langaddress: localized full address
 794                                 placename: localized name of object
 795                                 ref: content of ref tag (if available)
 796                                 lon: longitude
 797                                 lat: latitude
 798                                 importance: importance of place based on Wikipedia link count
 799                                 addressimportance: cumulated importance of address elements
 800                                 extra_place: type of place (for admin boundaries, if there is a place tag)
 801                                 aBoundingBox: bounding Box
 802                                 label: short description of the object class/type (English only)
 803                                 name: full name (currently the same as langaddress)
 804                                 foundorder: secondary ordering for places with same importance
 805                 */
 806                 function lookup()
 807                 {
 808                         if (!$this->sQuery && !$this->aStructuredQuery) return false;
 809
 810                         $sLanguagePrefArraySQL = "ARRAY[".join(',',array_map("getDBQuoted",$this->aLangPrefOrder))."]";
 811                         $sCountryCodesSQL = false;
 812                         if ($this->aCountryCodes && sizeof($this->aCountryCodes))
 813                         {
 814                                 $sCountryCodesSQL = join(',', array_map('addQuotes', $this->aCountryCodes));
 815                         }
 816
 817                         $sQuery = $this->sQuery;
 818
 819                         // Conflicts between US state abreviations and various words for 'the' in different languages
 820                         if (isset($this->aLangPrefOrder['name:en']))
 821                         {
 822                                 $sQuery = preg_replace('/(^|,)\s*il\s*(,|$)/','\1illinois\2', $sQuery);
 823                                 $sQuery = preg_replace('/(^|,)\s*al\s*(,|$)/','\1alabama\2', $sQuery);
 824                                 $sQuery = preg_replace('/(^|,)\s*la\s*(,|$)/','\1louisiana\2', $sQuery);
 825                         }
 826
 827                         // View Box SQL
 828                         $sViewboxCentreSQL = false;
 829                         $bBoundingBoxSearch = false;
 830                         if ($this->aViewBox)
 831                         {
 832                                 $fHeight = $this->aViewBox[0]-$this->aViewBox[2];
 833                                 $fWidth = $this->aViewBox[1]-$this->aViewBox[3];
 834                                 $aBigViewBox[0] = $this->aViewBox[0] + $fHeight;
 835                                 $aBigViewBox[2] = $this->aViewBox[2] - $fHeight;
 836                                 $aBigViewBox[1] = $this->aViewBox[1] + $fWidth;
 837                                 $aBigViewBox[3] = $this->aViewBox[3] - $fWidth;
 838
 839                                 $this->sViewboxSmallSQL = "ST_SetSRID(ST_MakeBox2D(ST_Point(".(float)$this->aViewBox[0].",".(float)$this->aViewBox[1]."),ST_Point(".(float)$this->aViewBox[2].",".(float)$this->aViewBox[3].")),4326)";
 840                                 $this->sViewboxLargeSQL = "ST_SetSRID(ST_MakeBox2D(ST_Point(".(float)$aBigViewBox[0].",".(float)$aBigViewBox[1]."),ST_Point(".(float)$aBigViewBox[2].",".(float)$aBigViewBox[3].")),4326)";
 841                                 $bBoundingBoxSearch = $this->bBoundedSearch;
 842                         }
 843
 844                         // Route SQL
 845                         if ($this->aRoutePoints)
 846                         {
 847                                 $sViewboxCentreSQL = "ST_SetSRID('LINESTRING(";
 848                                 $bFirst = true;
 849                                 foreach($this->aRoutePoints as $aPoint)
 850                                 {
 851                                         if (!$bFirst) $sViewboxCentreSQL .= ",";
 852                                         $sViewboxCentreSQL .= $aPoint[0].' '.$aPoint[1];
 853                                         $bFirst = false;
 854                                 }
 855                                 $sViewboxCentreSQL .= ")'::geometry,4326)";
 856
 857                                 $sSQL = "select st_buffer(".$sViewboxCentreSQL.",".(float)($_GET['routewidth']/69).")";
 858                                 $this->sViewboxSmallSQL = $this->oDB->getOne($sSQL);
 859                                 if (PEAR::isError($this->sViewboxSmallSQL))
 860                                 {
 861                                         failInternalError("Could not get small viewbox.", $sSQL, $this->sViewboxSmallSQL);
 862                                 }
 863                                 $this->sViewboxSmallSQL = "'".$this->sViewboxSmallSQL."'::geometry";
 864
 865                                 $sSQL = "select st_buffer(".$sViewboxCentreSQL.",".(float)($_GET['routewidth']/30).")";
 866                                 $this->sViewboxLargeSQL = $this->oDB->getOne($sSQL);
 867                                 if (PEAR::isError($this->sViewboxLargeSQL))
 868                                 {
 869                                         failInternalError("Could not get large viewbox.", $sSQL, $this->sViewboxLargeSQL);
 870                                 }
 871                                 $this->sViewboxLargeSQL = "'".$this->sViewboxLargeSQL."'::geometry";
 872                                 $bBoundingBoxSearch = $this->bBoundedSearch;
 873                         }
 874
 875                         // Do we have anything that looks like a lat/lon pair?
 876                         if ( $aLooksLike = looksLikeLatLonPair($sQuery) ){
 877                                 $this->setNearPoint(array($aLooksLike['lat'], $aLooksLike['lon']));
 878                                 $sQuery = $aLooksLike['query'];
 879                         }
 880
 881                         $aSearchResults = array();
 882                         if ($sQuery || $this->aStructuredQuery)
 883                         {
 884                                 // Start with a blank search
 885                                 $aSearches = array(
 886                                         array('iSearchRank' => 0,
 887                                                                 'iNamePhrase' => -1,
 888                                                                 'sCountryCode' => false,
 889                                                                 'aName' => array(),
 890                                                                 'aAddress' => array(),
 891                                                                 'aFullNameAddress' => array(),
 892                                                                 'aNameNonSearch' => array(),
 893                                                                 'aAddressNonSearch' => array(),
 894                                                                 'sOperator' => '',
 895                                                                 'aFeatureName' => array(),
 896                                                                 'sClass' => '',
 897                                                                 'sType' => '',
 898                                                                 'sHouseNumber' => '',
 899                                                                 'fLat' => '',
 900                                                                 'fLon' => '',
 901                                                                 'fRadius' => ''
 902                                                         )
 903                                 );
 904
 905                                 // Do we have a radius search?
 906                                 $sNearPointSQL = false;
 907                                 if ($this->aNearPoint)
 908                                 {
 909                                         $sNearPointSQL = "ST_SetSRID(ST_Point(".(float)$this->aNearPoint[1].",".(float)$this->aNearPoint[0]."),4326)";
 910                                         $aSearches[0]['fLat'] = (float)$this->aNearPoint[0];
 911                                         $aSearches[0]['fLon'] = (float)$this->aNearPoint[1];
 912                                         $aSearches[0]['fRadius'] = (float)$this->aNearPoint[2];
 913                                 }
 914
 915                                 // Any 'special' terms in the search?
 916                                 $bSpecialTerms = false;
 917                                 preg_match_all('/\\[(.*)=(.*)\\]/', $sQuery, $aSpecialTermsRaw, PREG_SET_ORDER);
 918                                 $aSpecialTerms = array();
 919                                 foreach($aSpecialTermsRaw as $aSpecialTerm)
 920                                 {
 921                                         $sQuery = str_replace($aSpecialTerm[0], ' ', $sQuery);
 922                                         $aSpecialTerms[strtolower($aSpecialTerm[1])] = $aSpecialTerm[2];
 923                                 }
 924
 925                                 preg_match_all('/\\[([\\w ]*)\\]/u', $sQuery, $aSpecialTermsRaw, PREG_SET_ORDER);
 926                                 $aSpecialTerms = array();
 927                                 if (isset($this->aStructuredQuery['amenity']) && $this->aStructuredQuery['amenity'])
 928                                 {
 929                                         $aSpecialTermsRaw[] = array('['.$this->aStructuredQuery['amenity'].']', $this->aStructuredQuery['amenity']);
 930                                         unset($this->aStructuredQuery['amenity']);
 931                                 }
 932                                 foreach($aSpecialTermsRaw as $aSpecialTerm)
 933                                 {
 934                                         $sQuery = str_replace($aSpecialTerm[0], ' ', $sQuery);
 935                                         $sToken = $this->oDB->getOne("select make_standard_name('".$aSpecialTerm[1]."') as string");
 936                                         $sSQL = 'select * from (select word_id,word_token, word, class, type, country_code, operator';
 937                                         $sSQL .= ' from word where word_token in (\' '.$sToken.'\')) as x where (class is not null and class not in (\'place\')) or country_code is not null';
 938                                         if (CONST_Debug) var_Dump($sSQL);
 939                                         $aSearchWords = $this->oDB->getAll($sSQL);
 940                                         $aNewSearches = array();
 941                                         foreach($aSearches as $aSearch)
 942                                         {
 943                                                 foreach($aSearchWords as $aSearchTerm)
 944                                                 {
 945                                                         $aNewSearch = $aSearch;
 946                                                         if ($aSearchTerm['country_code'])
 947                                                         {
 948                                                                 $aNewSearch['sCountryCode'] = strtolower($aSearchTerm['country_code']);
 949                                                                 $aNewSearches[] = $aNewSearch;
 950                                                                 $bSpecialTerms = true;
 951                                                         }
 952                                                         if ($aSearchTerm['class'])
 953                                                         {
 954                                                                 $aNewSearch['sClass'] = $aSearchTerm['class'];
 955                                                                 $aNewSearch['sType'] = $aSearchTerm['type'];
 956                                                                 $aNewSearches[] = $aNewSearch;
 957                                                                 $bSpecialTerms = true;
 958                                                         }
 959                                                 }
 960                                         }
 961                                         $aSearches = $aNewSearches;
 962                                 }
 963
 964                                 // Split query into phrases
 965                                 // Commas are used to reduce the search space by indicating where phrases split
 966                                 if ($this->aStructuredQuery)
 967                                 {
 968                                         $aPhrases = $this->aStructuredQuery;
 969                                         $bStructuredPhrases = true;
 970                                 }
 971                                 else
 972                                 {
 973                                         $aPhrases = explode(',',$sQuery);
 974                                         $bStructuredPhrases = false;
 975                                 }
 976
 977                                 // Convert each phrase to standard form
 978                                 // Create a list of standard words
 979                                 // Get all 'sets' of words
 980                                 // Generate a complete list of all
 981                                 $aTokens = array();
 982                                 foreach($aPhrases as $iPhrase => $sPhrase)
 983                                 {
 984                                         $aPhrase = $this->oDB->getRow("select make_standard_name('".pg_escape_string($sPhrase)."') as string");
 985                                         if (PEAR::isError($aPhrase))
 986                                         {
 987                                                 userError("Illegal query string (not an UTF-8 string): ".$sPhrase);
 988                                                 if (CONST_Debug) var_dump($aPhrase);
 989                                                 exit;
 990                                         }
 991                                         if (trim($aPhrase['string']))
 992                                         {
 993                                                 $aPhrases[$iPhrase] = $aPhrase;
 994                                                 $aPhrases[$iPhrase]['words'] = explode(' ',$aPhrases[$iPhrase]['string']);
 995                                                 $aPhrases[$iPhrase]['wordsets'] = getWordSets($aPhrases[$iPhrase]['words'], 0);
 996                                                 $aTokens = array_merge($aTokens, getTokensFromSets($aPhrases[$iPhrase]['wordsets']));
 997                                         }
 998                                         else
 999                                         {
1000                                                 unset($aPhrases[$iPhrase]);
1001                                         }
1002                                 }
1003
1004                                 // Reindex phrases - we make assumptions later on that they are numerically keyed in order
1005                                 $aPhraseTypes = array_keys($aPhrases);
1006                                 $aPhrases = array_values($aPhrases);
1007
1008                                 if (sizeof($aTokens))
1009                                 {
1010                                         // Check which tokens we have, get the ID numbers
1011                                         $sSQL = 'select word_id,word_token, word, class, type, country_code, operator, search_name_count';
1012                                         $sSQL .= ' from word where word_token in ('.join(',',array_map("getDBQuoted",$aTokens)).')';
1013
1014                                         if (CONST_Debug) var_Dump($sSQL);
1015
1016                                         $aValidTokens = array();
1017                                         if (sizeof($aTokens)) $aDatabaseWords = $this->oDB->getAll($sSQL);
1018                                         else $aDatabaseWords = array();
1019                                         if (PEAR::IsError($aDatabaseWords))
1020                                         {
1021                                                 failInternalError("Could not get word tokens.", $sSQL, $aDatabaseWords);
1022                                         }
1023                                         $aPossibleMainWordIDs = array();
1024                                         $aWordFrequencyScores = array();
1025                                         foreach($aDatabaseWords as $aToken)
1026                                         {
1027                                                 // Very special case - require 2 letter country param to match the country code found
1028                                                 if ($bStructuredPhrases && $aToken['country_code'] && !empty($this->aStructuredQuery['country'])
1029                                                                 && strlen($this->aStructuredQuery['country']) == 2 && strtolower($this->aStructuredQuery['country']) != $aToken['country_code'])
1030                                                 {
1031                                                         continue;
1032                                                 }
1033
1034                                                 if (isset($aValidTokens[$aToken['word_token']]))
1035                                                 {
1036                                                         $aValidTokens[$aToken['word_token']][] = $aToken;
1037                                                 }
1038                                                 else
1039                                                 {
1040                                                         $aValidTokens[$aToken['word_token']] = array($aToken);
1041                                                 }
1042                                                 if (!$aToken['class'] && !$aToken['country_code']) $aPossibleMainWordIDs[$aToken['word_id']] = 1;
1043                                                 $aWordFrequencyScores[$aToken['word_id']] = $aToken['search_name_count'] + 1;
1044                                         }
1045                                         if (CONST_Debug) var_Dump($aPhrases, $aValidTokens);
1046
1047                                         // Try and calculate GB postcodes we might be missing
1048                                         foreach($aTokens as $sToken)
1049                                         {
1050                                                 // Source of gb postcodes is now definitive - always use
1051                                                 if (preg_match('/^([A-Z][A-Z]?[0-9][0-9A-Z]? ?[0-9])([A-Z][A-Z])$/', strtoupper(trim($sToken)), $aData))
1052                                                 {
1053                                                         if (substr($aData[1],-2,1) != ' ')
1054                                                         {
1055                                                                 $aData[0] = substr($aData[0],0,strlen($aData[1])-1).' '.substr($aData[0],strlen($aData[1])-1);
1056                                                                 $aData[1] = substr($aData[1],0,-1).' '.substr($aData[1],-1,1);
1057                                                         }
1058                                                         $aGBPostcodeLocation = gbPostcodeCalculate($aData[0], $aData[1], $aData[2], $this->oDB);
1059                                                         if ($aGBPostcodeLocation)
1060                                                         {
1061                                                                 $aValidTokens[$sToken] = $aGBPostcodeLocation;
1062                                                         }
1063                                                 }
1064                                                 // US ZIP+4 codes - if there is no token,
1065                                                 //      merge in the 5-digit ZIP code
1066                                                 else if (!isset($aValidTokens[$sToken]) && preg_match('/^([0-9]{5}) [0-9]{4}$/', $sToken, $aData))
1067                                                 {
1068                                                         if (isset($aValidTokens[$aData[1]]))
1069                                                         {
1070                                                                 foreach($aValidTokens[$aData[1]] as $aToken)
1071                                                                 {
1072                                                                         if (!$aToken['class'])
1073                                                                         {
1074                                                                                 if (isset($aValidTokens[$sToken]))
1075                                                                                 {
1076                                                                                         $aValidTokens[$sToken][] = $aToken;
1077                                                                                 }
1078                                                                                 else
1079                                                                                 {
1080                                                                                         $aValidTokens[$sToken] = array($aToken);
1081                                                                                 }
1082                                                                         }
1083                                                                 }
1084                                                         }
1085                                                 }
1086                                         }
1087
1088                                         foreach($aTokens as $sToken)
1089                                         {
1090                                                 // Unknown single word token with a number - assume it is a house number
1091                                                 if (!isset($aValidTokens[' '.$sToken]) && strpos($sToken,' ') === false && preg_match('/[0-9]/', $sToken))
1092                                                 {
1093                                                         $aValidTokens[' '.$sToken] = array(array('class'=>'place','type'=>'house'));
1094                                                 }
1095                                         }
1096
1097                                         // Any words that have failed completely?
1098                                         // TODO: suggestions
1099
1100                                         // Start the search process
1101                     // array with: placeid => -1 | tiger-housenumber
1102                                         $aResultPlaceIDs = array();
1103
1104                                         $aGroupedSearches = $this->getGroupedSearches($aSearches, $aPhraseTypes, $aPhrases, $aValidTokens, $aWordFrequencyScores, $bStructuredPhrases);
1105
1106                                         if ($this->bReverseInPlan)
1107                                         {
1108                                                 // Reverse phrase array and also reverse the order of the wordsets in
1109                                                 // the first and final phrase. Don't bother about phrases in the middle
1110                                                 // because order in the address doesn't matter.
1111                                                 $aPhrases = array_reverse($aPhrases);
1112                                                 $aPhrases[0]['wordsets'] = getInverseWordSets($aPhrases[0]['words'], 0);
1113                                                 if (sizeof($aPhrases) > 1)
1114                                                 {
1115                                                         $aFinalPhrase = end($aPhrases);
1116                                                         $aPhrases[sizeof($aPhrases)-1]['wordsets'] = getInverseWordSets($aFinalPhrase['words'], 0);
1117                                                 }
1118                                                 $aReverseGroupedSearches = $this->getGroupedSearches($aSearches, null, $aPhrases, $aValidTokens, $aWordFrequencyScores, false);
1119
1120                                                 foreach($aGroupedSearches as $aSearches)
1121                                                 {
1122                                                         foreach($aSearches as $aSearch)
1123                                                         {
1124                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank)
1125                                                                 {
1126                                                                         if (!isset($aReverseGroupedSearches[$aSearch['iSearchRank']])) $aReverseGroupedSearches[$aSearch['iSearchRank']] = array();
1127                                                                         $aReverseGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
1128                                                                 }
1129
1130                                                         }
1131                                                 }
1132
1133                                                 $aGroupedSearches = $aReverseGroupedSearches;
1134                                                 ksort($aGroupedSearches);
1135                                         }
1136                                 }
1137                                 else
1138                                 {
1139                                         // Re-group the searches by their score, junk anything over 20 as just not worth trying
1140                                         $aGroupedSearches = array();
1141                                         foreach($aSearches as $aSearch)
1142                                         {
1143                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank)
1144                                                 {
1145                                                         if (!isset($aGroupedSearches[$aSearch['iSearchRank']])) $aGroupedSearches[$aSearch['iSearchRank']] = array();
1146                                                         $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
1147                                                 }
1148                                         }
1149                                         ksort($aGroupedSearches);
1150                                 }
1151
1152                                 if (CONST_Debug) var_Dump($aGroupedSearches);
1153
1154                                 if (CONST_Search_TryDroppedAddressTerms && sizeof($this->aStructuredQuery) > 0)
1155                                 {
1156                                         $aCopyGroupedSearches = $aGroupedSearches;
1157                                         foreach($aCopyGroupedSearches as $iGroup => $aSearches)
1158                                         {
1159                                                 foreach($aSearches as $iSearch => $aSearch)
1160                                                 {
1161                                                         $aReductionsList = array($aSearch['aAddress']);
1162                                                         $iSearchRank = $aSearch['iSearchRank'];
1163                                                         while(sizeof($aReductionsList) > 0)
1164                                                         {
1165                                                                 $iSearchRank += 5;
1166                                                                 if ($iSearchRank > iMaxRank) break 3;
1167                                                                 $aNewReductionsList = array();
1168                                                                 foreach($aReductionsList as $aReductionsWordList)
1169                                                                 {
1170                                                                         for ($iReductionWord = 0; $iReductionWord < sizeof($aReductionsWordList); $iReductionWord++)
1171                                                                         {
1172                                                                                 $aReductionsWordListResult = array_merge(array_slice($aReductionsWordList, 0, $iReductionWord), array_slice($aReductionsWordList, $iReductionWord+1));
1173                                                                                 $aReverseSearch = $aSearch;
1174                                                                                 $aSearch['aAddress'] = $aReductionsWordListResult;
1175                                                                                 $aSearch['iSearchRank'] = $iSearchRank;
1176                                                                                 $aGroupedSearches[$iSearchRank][] = $aReverseSearch;
1177                                                                                 if (sizeof($aReductionsWordListResult) > 0)
1178                                                                                 {
1179                                                                                         $aNewReductionsList[] = $aReductionsWordListResult;
1180                                                                                 }
1181                                                                         }
1182                                                                 }
1183                                                                 $aReductionsList = $aNewReductionsList;
1184                                                         }
1185                                                 }
1186                                         }
1187                                         ksort($aGroupedSearches);
1188                                 }
1189
1190                                 // Filter out duplicate searches
1191                                 $aSearchHash = array();
1192                                 foreach($aGroupedSearches as $iGroup => $aSearches)
1193                                 {
1194                                         foreach($aSearches as $iSearch => $aSearch)
1195                                         {
1196                                                 $sHash = serialize($aSearch);
1197                                                 if (isset($aSearchHash[$sHash]))
1198                                                 {
1199                                                         unset($aGroupedSearches[$iGroup][$iSearch]);
1200                                                         if (sizeof($aGroupedSearches[$iGroup]) == 0) unset($aGroupedSearches[$iGroup]);
1201                                                 }
1202                                                 else
1203                                                 {
1204                                                         $aSearchHash[$sHash] = 1;
1205                                                 }
1206                                         }
1207                                 }
1208
1209                                 if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
1210
1211                                 $iGroupLoop = 0;
1212                                 $iQueryLoop = 0;
1213                                 foreach($aGroupedSearches as $iGroupedRank => $aSearches)
1214                                 {
1215                                         $iGroupLoop++;
1216                                         foreach($aSearches as $aSearch)
1217                                         {
1218                                                 $iQueryLoop++;
1219                         $searchedHousenumber=-1;
1220
1221                                                 if (CONST_Debug) { echo "<hr><b>Search Loop, group $iGroupLoop, loop $iQueryLoop</b>"; }
1222                                                 if (CONST_Debug) _debugDumpGroupedSearches(array($iGroupedRank => array($aSearch)), $aValidTokens);
1223
1224                                                 // No location term?
1225                                                 if (!sizeof($aSearch['aName']) && !sizeof($aSearch['aAddress']) && !$aSearch['fLon'])
1226                                                 {
1227                                                         if ($aSearch['sCountryCode'] && !$aSearch['sClass'] && !$aSearch['sHouseNumber'])
1228                                                         {
1229                                                                 // Just looking for a country by code - look it up
1230                                                                 if (4 >= $this->iMinAddressRank && 4 <= $this->iMaxAddressRank)
1231                                                                 {
1232                                                                         $sSQL = "select place_id from placex where calculated_country_code='".$aSearch['sCountryCode']."' and rank_search = 4";
1233                                                                         if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1234                                                                         if ($bBoundingBoxSearch)
1235                                                                                 $sSQL .= " and _st_intersects($this->sViewboxSmallSQL, geometry)";
1236                                                                         $sSQL .= " order by st_area(geometry) desc limit 1";
1237                                                                         if (CONST_Debug) var_dump($sSQL);
1238                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL);
1239                                                                 }
1240                                                                 else
1241                                                                 {
1242                                                                         $aPlaceIDs = array();
1243                                                                 }
1244                                                         }
1245                                                         else
1246                                                         {
1247                                                                 if (!$bBoundingBoxSearch && !$aSearch['fLon']) continue;
1248                                                                 if (!$aSearch['sClass']) continue;
1249                                                                 $sSQL = "select count(*) from pg_tables where tablename = 'place_classtype_".$aSearch['sClass']."_".$aSearch['sType']."'";
1250                                                                 if ($this->oDB->getOne($sSQL))
1251                                                                 {
1252                                                                         $sSQL = "select place_id from place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." ct";
1253                                                                         if ($sCountryCodesSQL) $sSQL .= " join placex using (place_id)";
1254                                                                         $sSQL .= " where st_contains($this->sViewboxSmallSQL, ct.centroid)";
1255                                                                         if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1256                                                                         if (sizeof($this->aExcludePlaceIDs))
1257                                                                         {
1258                                                                                 $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1259                                                                         }
1260                                                                         if ($sViewboxCentreSQL) $sSQL .= " order by st_distance($sViewboxCentreSQL, ct.centroid) asc";
1261                                                                         $sSQL .= " limit $this->iLimit";
1262                                                                         if (CONST_Debug) var_dump($sSQL);
1263                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL);
1264
1265                                                                         // If excluded place IDs are given, it is fair to assume that
1266                                                                         // there have been results in the small box, so no further
1267                                                                         // expansion in that case.
1268                                                                         // Also don't expand if bounded results were requested.
1269                                                                         if (!sizeof($aPlaceIDs) && !sizeof($this->aExcludePlaceIDs) && !$this->bBoundedSearch)
1270                                                                         {
1271                                                                                 $sSQL = "select place_id from place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." ct";
1272                                                                                 if ($sCountryCodesSQL) $sSQL .= " join placex using (place_id)";
1273                                                                                 $sSQL .= " where st_contains($this->sViewboxLargeSQL, ct.centroid)";
1274                                                                                 if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1275                                                                                 if ($sViewboxCentreSQL) $sSQL .= " order by st_distance($sViewboxCentreSQL, ct.centroid) asc";
1276                                                                                 $sSQL .= " limit $this->iLimit";
1277                                                                                 if (CONST_Debug) var_dump($sSQL);
1278                                                                                 $aPlaceIDs = $this->oDB->getCol($sSQL);
1279                                                                         }
1280                                                                 }
1281                                                                 else
1282                                                                 {
1283                                                                         $sSQL = "select place_id from placex where class='".$aSearch['sClass']."' and type='".$aSearch['sType']."'";
1284                                                                         $sSQL .= " and st_contains($this->sViewboxSmallSQL, geometry) and linked_place_id is null";
1285                                                                         if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1286                                                                         if ($sViewboxCentreSQL) $sSQL .= " order by st_distance($sViewboxCentreSQL, centroid) asc";
1287                                                                         $sSQL .= " limit $this->iLimit";
1288                                                                         if (CONST_Debug) var_dump($sSQL);
1289                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL);
1290                                                                 }
1291                                                         }
1292                                                 }
1293                                                 else
1294                                                 {
1295                                                         $aPlaceIDs = array();
1296
1297                                                         // First we need a position, either aName or fLat or both
1298                                                         $aTerms = array();
1299                                                         $aOrder = array();
1300
1301                                                         if ($aSearch['sHouseNumber'] && sizeof($aSearch['aAddress']))
1302                                                         {
1303                                                                 $sHouseNumberRegex = '\\\\m'.$aSearch['sHouseNumber'].'\\\\M';
1304                                                                 $aOrder[] = "exists(select place_id from placex where parent_place_id = search_name.place_id and transliteration(housenumber) ~* E'".$sHouseNumberRegex."' limit 1) desc";
1305                                                         }
1306
1307                                                         // TODO: filter out the pointless search terms (2 letter name tokens and less)
1308                                                         // they might be right - but they are just too darned expensive to run
1309                                                         if (sizeof($aSearch['aName'])) $aTerms[] = "name_vector @> ARRAY[".join($aSearch['aName'],",")."]";
1310                                                         if (sizeof($aSearch['aNameNonSearch'])) $aTerms[] = "array_cat(name_vector,ARRAY[]::integer[]) @> ARRAY[".join($aSearch['aNameNonSearch'],",")."]";
1311                                                         if (sizeof($aSearch['aAddress']) && $aSearch['aName'] != $aSearch['aAddress'])
1312                                                         {
1313                                                                 // For infrequent name terms disable index usage for address
1314                                                                 if (CONST_Search_NameOnlySearchFrequencyThreshold &&
1315                                                                                 sizeof($aSearch['aName']) == 1 &&
1316                                                                                 $aWordFrequencyScores[$aSearch['aName'][reset($aSearch['aName'])]] < CONST_Search_NameOnlySearchFrequencyThreshold)
1317                                                                 {
1318                                                                         $aTerms[] = "array_cat(nameaddress_vector,ARRAY[]::integer[]) @> ARRAY[".join(array_merge($aSearch['aAddress'],$aSearch['aAddressNonSearch']),",")."]";
1319                                                                 }
1320                                                                 else
1321                                                                 {
1322                                                                         $aTerms[] = "nameaddress_vector @> ARRAY[".join($aSearch['aAddress'],",")."]";
1323                                                                         if (sizeof($aSearch['aAddressNonSearch'])) $aTerms[] = "array_cat(nameaddress_vector,ARRAY[]::integer[]) @> ARRAY[".join($aSearch['aAddressNonSearch'],",")."]";
1324                                                                 }
1325                                                         }
1326                                                         if ($aSearch['sCountryCode']) $aTerms[] = "country_code = '".pg_escape_string($aSearch['sCountryCode'])."'";
1327                                                         if ($aSearch['sHouseNumber'])
1328                                                         {
1329                                                                 $aTerms[] = "address_rank between 16 and 27";
1330                                                         }
1331                                                         else
1332                                                         {
1333                                                                 if ($this->iMinAddressRank > 0)
1334                                                                 {
1335                                                                         $aTerms[] = "address_rank >= ".$this->iMinAddressRank;
1336                                                                 }
1337                                                                 if ($this->iMaxAddressRank < 30)
1338                                                                 {
1339                                                                         $aTerms[] = "address_rank <= ".$this->iMaxAddressRank;
1340                                                                 }
1341                                                         }
1342                                                         if ($aSearch['fLon'] && $aSearch['fLat'])
1343                                                         {
1344                                                                 $aTerms[] = "ST_DWithin(centroid, ST_SetSRID(ST_Point(".$aSearch['fLon'].",".$aSearch['fLat']."),4326), ".$aSearch['fRadius'].")";
1345                                                                 $aOrder[] = "ST_Distance(centroid, ST_SetSRID(ST_Point(".$aSearch['fLon'].",".$aSearch['fLat']."),4326)) ASC";
1346                                                         }
1347                                                         if (sizeof($this->aExcludePlaceIDs))
1348                                                         {
1349                                                                 $aTerms[] = "place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1350                                                         }
1351                                                         if ($sCountryCodesSQL)
1352                                                         {
1353                                                                 $aTerms[] = "country_code in ($sCountryCodesSQL)";
1354                                                         }
1355
1356                                                         if ($bBoundingBoxSearch) $aTerms[] = "centroid && $this->sViewboxSmallSQL";
1357                                                         if ($sNearPointSQL) $aOrder[] = "ST_Distance($sNearPointSQL, centroid) asc";
1358
1359                                                         if ($aSearch['sHouseNumber'])
1360                                                         {
1361                                                                 $sImportanceSQL = '- abs(26 - address_rank) + 3';
1362                                                         }
1363                                                         else
1364                                                         {
1365                                                                 $sImportanceSQL = '(case when importance = 0 OR importance IS NULL then 0.75-(search_rank::float/40) else importance end)';
1366                                                         }
1367                                                         if ($this->sViewboxSmallSQL) $sImportanceSQL .= " * case when ST_Contains($this->sViewboxSmallSQL, centroid) THEN 1 ELSE 0.5 END";
1368                                                         if ($this->sViewboxLargeSQL) $sImportanceSQL .= " * case when ST_Contains($this->sViewboxLargeSQL, centroid) THEN 1 ELSE 0.5 END";
1369
1370                                                         $aOrder[] = "$sImportanceSQL DESC";
1371                                                         if (sizeof($aSearch['aFullNameAddress']))
1372                                                         {
1373                                                                 $sExactMatchSQL = '(select count(*) from (select unnest(ARRAY['.join($aSearch['aFullNameAddress'],",").']) INTERSECT select unnest(nameaddress_vector))s) as exactmatch';
1374                                                                 $aOrder[] = 'exactmatch DESC';
1375                                                         } else {
1376                                                                 $sExactMatchSQL = '0::int as exactmatch';
1377                                                         }
1378
1379                                                         if (sizeof($aTerms))
1380                                                         {
1381                                                                 $sSQL = "select place_id, ";
1382                                                                 $sSQL .= $sExactMatchSQL;
1383                                                                 $sSQL .= " from search_name";
1384                                                                 $sSQL .= " where ".join(' and ',$aTerms);
1385                                                                 $sSQL .= " order by ".join(', ',$aOrder);
1386                                                                 if ($aSearch['sHouseNumber'] || $aSearch['sClass'])
1387                                                                         $sSQL .= " limit 20";
1388                                                                 elseif (!sizeof($aSearch['aName']) && !sizeof($aSearch['aAddress']) && $aSearch['sClass'])
1389                                                                         $sSQL .= " limit 1";
1390                                                                 else
1391                                                                         $sSQL .= " limit ".$this->iLimit;
1392
1393                                                                 if (CONST_Debug) { var_dump($sSQL); }
1394                                                                 $aViewBoxPlaceIDs = $this->oDB->getAll($sSQL);
1395                                                                 if (PEAR::IsError($aViewBoxPlaceIDs))
1396                                                                 {
1397                                                                         failInternalError("Could not get places for search terms.", $sSQL, $aViewBoxPlaceIDs);
1398                                                                 }
1399                                                                 //var_dump($aViewBoxPlaceIDs);
1400                                                                 // Did we have an viewbox matches?
1401                                                                 $aPlaceIDs = array();
1402                                                                 $bViewBoxMatch = false;
1403                                                                 foreach($aViewBoxPlaceIDs as $aViewBoxRow)
1404                                                                 {
1405                                                                         //if ($bViewBoxMatch == 1 && $aViewBoxRow['in_small'] == 'f') break;
1406                                                                         //if ($bViewBoxMatch == 2 && $aViewBoxRow['in_large'] == 'f') break;
1407                                                                         //if ($aViewBoxRow['in_small'] == 't') $bViewBoxMatch = 1;
1408                                                                         //else if ($aViewBoxRow['in_large'] == 't') $bViewBoxMatch = 2;
1409                                                                         $aPlaceIDs[] = $aViewBoxRow['place_id'];
1410                                                                         $this->exactMatchCache[$aViewBoxRow['place_id']] = $aViewBoxRow['exactmatch'];
1411                                                                 }
1412                                                         }
1413                                                         //var_Dump($aPlaceIDs);
1414                                                         //exit;
1415
1416                                                         //now search for housenumber, if housenumber provided
1417                                                         if ($aSearch['sHouseNumber'] && sizeof($aPlaceIDs))
1418                                                         {
1419                                                                 $aRoadPlaceIDs = $aPlaceIDs;
1420                                                                 $sPlaceIDs = join(',',$aPlaceIDs);
1421
1422                                                                 // Now they are indexed look for a house attached to a street we found
1423                                                                 $sHouseNumberRegex = '\\\\m'.$aSearch['sHouseNumber'].'\\\\M';
1424                                                                 $sSQL = "select place_id from placex where parent_place_id in (".$sPlaceIDs.") and transliteration(housenumber) ~* E'".$sHouseNumberRegex."'";
1425                                                                 if (sizeof($this->aExcludePlaceIDs))
1426                                                                 {
1427                                                                         $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1428                                                                 }
1429                                                                 $sSQL .= " limit $this->iLimit";
1430                                                                 if (CONST_Debug) var_dump($sSQL);
1431                                                                 $aPlaceIDs = $this->oDB->getCol($sSQL);
1432
1433                                                                 // If nothing found try the aux fallback table
1434                                                                 if (!sizeof($aPlaceIDs))
1435                                                                 {
1436                                                                         $sSQL = "select place_id from location_property_aux where parent_place_id in (".$sPlaceIDs.") and housenumber = '".pg_escape_string($aSearch['sHouseNumber'])."'";
1437                                                                         if (sizeof($this->aExcludePlaceIDs))
1438                                                                         {
1439                                                                                 $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1440                                                                         }
1441                                                                         //$sSQL .= " limit $this->iLimit";
1442                                                                         if (CONST_Debug) var_dump($sSQL);
1443                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL);
1444                                                                 }
1445                                 //if nothing was found in placex or location_property_aux, then search in Tiger data for this housenumber(location_property_tiger)
1446                                 $searchedHousenumber = intval($aSearch['sHouseNumber']);
1447                                                                 if (!sizeof($aPlaceIDs))
1448                                                                 {
1449                                                                         //$sSQL = "select place_id from location_property_tiger where parent_place_id in (".$sPlaceIDs.") and housenumber = '".pg_escape_string($aSearch['sHouseNumber'])."'";
1450                                                                         //new query for lines, not housenumbers anymore
1451                                     if($searchedHousenumber%2==0){
1452                                         //if housenumber is even, look for housenumber in streets with interpolationtype even or all
1453                                         $sSQL = "select distinct place_id from location_property_tiger where parent_place_id in (".$sPlaceIDs.") and (interpolationtype='even' or interpolationtype='all') and ".$searchedHousenumber.">=startnumber and ".$searchedHousenumber."<=endnumber";
1454                                     }else{
1455                                         //look for housenumber in streets with interpolationtype odd or all
1456                                         $sSQL = "select distinct place_id from location_property_tiger where parent_place_id in (".$sPlaceIDs.") and (interpolationtype='odd' or interpolationtype='all') and ".$searchedHousenumber.">=startnumber and ".$searchedHousenumber."<=endnumber";
1457                                     }
1458
1459                                     if (sizeof($this->aExcludePlaceIDs))
1460                                                                         {
1461                                                                                 $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1462                                                                         }
1463                                                                         //$sSQL .= " limit $this->iLimit";
1464                                                                         if (CONST_Debug) var_dump($sSQL);
1465                                     //get place IDs
1466                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL,0);
1467                                                                 }
1468
1469                                                                 // Fallback to the road (if no housenumber was found)
1470                                                                 if (!sizeof($aPlaceIDs) && preg_match('/[0-9]+/', $aSearch['sHouseNumber']))
1471                                                                 {
1472                                                                         $aPlaceIDs = $aRoadPlaceIDs;
1473                                     //set to -1, if no housenumbers were found
1474                                     $searchedHousenumber=-1;
1475                                                                 }else{
1476                                     //housenumber was found, remains saved in searchedHousenumber
1477                                 }
1478                                                         }
1479
1480
1481                                                         if ($aSearch['sClass'] && sizeof($aPlaceIDs))
1482                                                         {
1483                                                                 $sPlaceIDs = join(',',$aPlaceIDs);
1484                                                                 $aClassPlaceIDs = array();
1485
1486                                                                 if (!$aSearch['sOperator'] || $aSearch['sOperator'] == 'name')
1487                                                                 {
1488                                                                         // If they were searching for a named class (i.e. 'Kings Head pub') then we might have an extra match
1489                                                                         $sSQL = "select place_id from placex where place_id in ($sPlaceIDs) and class='".$aSearch['sClass']."' and type='".$aSearch['sType']."'";
1490                                                                         $sSQL .= " and linked_place_id is null";
1491                                                                         if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1492                                                                         $sSQL .= " order by rank_search asc limit $this->iLimit";
1493                                                                         if (CONST_Debug) var_dump($sSQL);
1494                                                                         $aClassPlaceIDs = $this->oDB->getCol($sSQL);
1495                                                                 }
1496
1497                                                                 if (!$aSearch['sOperator'] || $aSearch['sOperator'] == 'near') // & in
1498                                                                 {
1499                                                                         $sSQL = "select count(*) from pg_tables where tablename = 'place_classtype_".$aSearch['sClass']."_".$aSearch['sType']."'";
1500                                                                         $bCacheTable = $this->oDB->getOne($sSQL);
1501
1502                                                                         $sSQL = "select min(rank_search) from placex where place_id in ($sPlaceIDs)";
1503
1504                                                                         if (CONST_Debug) var_dump($sSQL);
1505                                                                         $this->iMaxRank = ((int)$this->oDB->getOne($sSQL));
1506
1507                                                                         // For state / country level searches the normal radius search doesn't work very well
1508                                                                         $sPlaceGeom = false;
1509                                                                         if ($this->iMaxRank < 9 && $bCacheTable)
1510                                                                         {
1511                                                                                 // Try and get a polygon to search in instead
1512                                                                                 $sSQL = "select geometry from placex where place_id in ($sPlaceIDs) and rank_search < $this->iMaxRank + 5 and st_geometrytype(geometry) in ('ST_Polygon','ST_MultiPolygon') order by rank_search asc limit 1";
1513                                                                                 if (CONST_Debug) var_dump($sSQL);
1514                                                                                 $sPlaceGeom = $this->oDB->getOne($sSQL);
1515                                                                         }
1516
1517                                                                         if ($sPlaceGeom)
1518                                                                         {
1519                                                                                 $sPlaceIDs = false;
1520                                                                         }
1521                                                                         else
1522                                                                         {
1523                                                                                 $this->iMaxRank += 5;
1524                                                                                 $sSQL = "select place_id from placex where place_id in ($sPlaceIDs) and rank_search < $this->iMaxRank";
1525                                                                                 if (CONST_Debug) var_dump($sSQL);
1526                                                                                 $aPlaceIDs = $this->oDB->getCol($sSQL);
1527                                                                                 $sPlaceIDs = join(',',$aPlaceIDs);
1528                                                                         }
1529
1530                                                                         if ($sPlaceIDs || $sPlaceGeom)
1531                                                                         {
1532
1533                                                                                 $fRange = 0.01;
1534                                                                                 if ($bCacheTable)
1535                                                                                 {
1536                                                                                         // More efficient - can make the range bigger
1537                                                                                         $fRange = 0.05;
1538
1539                                                                                         $sOrderBySQL = '';
1540                                                                                         if ($sNearPointSQL) $sOrderBySQL = "ST_Distance($sNearPointSQL, l.centroid)";
1541                                                                                         else if ($sPlaceIDs) $sOrderBySQL = "ST_Distance(l.centroid, f.geometry)";
1542                                                                                         else if ($sPlaceGeom) $sOrderBysSQL = "ST_Distance(st_centroid('".$sPlaceGeom."'), l.centroid)";
1543
1544                                                                                         $sSQL = "select distinct l.place_id".($sOrderBySQL?','.$sOrderBySQL:'')." from place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." as l";
1545                                                                                         if ($sCountryCodesSQL) $sSQL .= " join placex as lp using (place_id)";
1546                                                                                         if ($sPlaceIDs)
1547                                                                                         {
1548                                                                                                 $sSQL .= ",placex as f where ";
1549                                                                                                 $sSQL .= "f.place_id in ($sPlaceIDs) and ST_DWithin(l.centroid, f.centroid, $fRange) ";
1550                                                                                         }
1551                                                                                         if ($sPlaceGeom)
1552                                                                                         {
1553                                                                                                 $sSQL .= " where ";
1554                                                                                                 $sSQL .= "ST_Contains('".$sPlaceGeom."', l.centroid) ";
1555                                                                                         }
1556                                                                                         if (sizeof($this->aExcludePlaceIDs))
1557                                                                                         {
1558                                                                                                 $sSQL .= " and l.place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1559                                                                                         }
1560                                                                                         if ($sCountryCodesSQL) $sSQL .= " and lp.calculated_country_code in ($sCountryCodesSQL)";
1561                                                                                         if ($sOrderBySQL) $sSQL .= "order by ".$sOrderBySQL." asc";
1562                                                                                         if ($this->iOffset) $sSQL .= " offset $this->iOffset";
1563                                                                                         $sSQL .= " limit $this->iLimit";
1564                                                                                         if (CONST_Debug) var_dump($sSQL);
1565                                                                                         $aClassPlaceIDs = array_merge($aClassPlaceIDs, $this->oDB->getCol($sSQL));
1566                                                                                 }
1567                                                                                 else
1568                                                                                 {
1569                                                                                         if (isset($aSearch['fRadius']) && $aSearch['fRadius']) $fRange = $aSearch['fRadius'];
1570
1571                                                                                         $sOrderBySQL = '';
1572                                                                                         if ($sNearPointSQL) $sOrderBySQL = "ST_Distance($sNearPointSQL, l.geometry)";
1573                                                                                         else $sOrderBySQL = "ST_Distance(l.geometry, f.geometry)";
1574
1575                                                                                         $sSQL = "select distinct l.place_id".($sOrderBysSQL?','.$sOrderBysSQL:'')." from placex as l,placex as f where ";
1576                                                                                         $sSQL .= "f.place_id in ( $sPlaceIDs) and ST_DWithin(l.geometry, f.centroid, $fRange) ";
1577                                                                                         $sSQL .= "and l.class='".$aSearch['sClass']."' and l.type='".$aSearch['sType']."' ";
1578                                                                                         if (sizeof($this->aExcludePlaceIDs))
1579                                                                                         {
1580                                                                                                 $sSQL .= " and l.place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1581                                                                                         }
1582                                                                                         if ($sCountryCodesSQL) $sSQL .= " and l.calculated_country_code in ($sCountryCodesSQL)";
1583                                                                                         if ($sOrderBy) $sSQL .= "order by ".$OrderBysSQL." asc";
1584                                                                                         if ($this->iOffset) $sSQL .= " offset $this->iOffset";
1585                                                                                         $sSQL .= " limit $this->iLimit";
1586                                                                                         if (CONST_Debug) var_dump($sSQL);
1587                                                                                         $aClassPlaceIDs = array_merge($aClassPlaceIDs, $this->oDB->getCol($sSQL));
1588                                                                                 }
1589                                                                         }
1590                                                                 }
1591
1592                                                                 $aPlaceIDs = $aClassPlaceIDs;
1593
1594                                                         }
1595
1596                                                 }
1597
1598                                                 if (PEAR::IsError($aPlaceIDs))
1599                                                 {
1600                                                         failInternalError("Could not get place IDs from tokens." ,$sSQL, $aPlaceIDs);
1601                                                 }
1602
1603                                                 if (CONST_Debug) { echo "<br><b>Place IDs:</b> "; var_Dump($aPlaceIDs); }
1604
1605                                                 foreach($aPlaceIDs as $iPlaceID)
1606                                                 {
1607                             // array for placeID => -1 | Tiger housenumber
1608                                                         $aResultPlaceIDs[$iPlaceID] = $searchedHousenumber;
1609                                                 }
1610                                                 if ($iQueryLoop > 20) break;
1611                                         }
1612
1613                                         if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs) && ($this->iMinAddressRank != 0 || $this->iMaxAddressRank != 30))
1614                                         {
1615                                                 // Need to verify passes rank limits before dropping out of the loop (yuk!)
1616                         // reduces the number of place id, like a filter
1617                                                 $sSQL = "select place_id from placex where place_id in (".join(',',array_keys($aResultPlaceIDs)).") ";
1618                                                 $sSQL .= "and (placex.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
1619                                                 if (14 >= $this->iMinAddressRank && 14 <= $this->iMaxAddressRank) $sSQL .= " OR (extratags->'place') = 'city'";
1620                                                 if ($this->aAddressRankList) $sSQL .= " OR placex.rank_address in (".join(',',$this->aAddressRankList).")";
1621                                                 $sSQL .= ") UNION select place_id from location_property_tiger where place_id in (".join(',',array_keys($aResultPlaceIDs)).") ";
1622                                                 $sSQL .= "and (30 between $this->iMinAddressRank and $this->iMaxAddressRank ";
1623                                                 if ($this->aAddressRankList) $sSQL .= " OR 30 in (".join(',',$this->aAddressRankList).")";
1624                                                 $sSQL .= ")";
1625                                                 if (CONST_Debug) var_dump($sSQL);
1626                                                 $aFilteredPlaceIDs = $this->oDB->getCol($sSQL);
1627                         $tempIDs = array();
1628                         foreach($aFilteredPlaceIDs as $placeID){
1629                             $tempIDs[$placeID]= $aResultPlaceIDs[$placeID];  //assign housenumber to placeID
1630                         }
1631                         $aResultPlaceIDs=$tempIDs;
1632                                         }
1633
1634                                         //exit;
1635                                         if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs)) break;
1636                                         if ($iGroupLoop > 4) break;
1637                                         if ($iQueryLoop > 30) break;
1638                                 }
1639
1640                                 // Did we find anything?
1641                                 if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs))
1642                                 {
1643                                         $aSearchResults = $this->getDetails($aResultPlaceIDs);
1644                                 }
1645
1646                         }
1647                         else
1648                         {
1649                                 // Just interpret as a reverse geocode
1650                                 $iPlaceID = geocodeReverse((float)$this->aNearPoint[0], (float)$this->aNearPoint[1]);
1651                                 if ($iPlaceID)
1652                                         $aSearchResults = $this->getDetails(array($iPlaceID));
1653                                 else
1654                                         $aSearchResults = array();
1655                         }
1656
1657                         // No results? Done
1658                         if (!sizeof($aSearchResults))
1659                         {
1660                                 if ($this->bFallback)
1661                                 {
1662                                         if ($this->fallbackStructuredQuery())
1663                                         {
1664                                                 return $this->lookup();
1665                                         }
1666                                 }
1667
1668                                 return array();
1669                         }
1670
1671                         $aClassType = getClassTypesWithImportance();
1672                         $aRecheckWords = preg_split('/\b[\s,\\-]*/u',$sQuery);
1673                         foreach($aRecheckWords as $i => $sWord)
1674                         {
1675                                 if (!preg_match('/\pL/', $sWord)) unset($aRecheckWords[$i]);
1676                         }
1677
1678                         if (CONST_Debug) { echo '<i>Recheck words:<\i>'; var_dump($aRecheckWords); }
1679
1680                         foreach($aSearchResults as $iResNum => $aResult)
1681                         {
1682                                 // Default
1683                                 $fDiameter = getResultDiameter($aResult);
1684
1685                                 $oPlaceLookup = new PlaceLookup($this->oDB);
1686                                 $oPlaceLookup->setIncludePolygonAsPoints($this->bIncludePolygonAsPoints);
1687                                 $oPlaceLookup->setIncludePolygonAsText($this->bIncludePolygonAsText);
1688                                 $oPlaceLookup->setIncludePolygonAsGeoJSON($this->bIncludePolygonAsGeoJSON);
1689                                 $oPlaceLookup->setIncludePolygonAsKML($this->bIncludePolygonAsKML);
1690                                 $oPlaceLookup->setIncludePolygonAsSVG($this->bIncludePolygonAsSVG);
1691                                 $oPlaceLookup->setPolygonSimplificationThreshold($this->fPolygonSimplificationThreshold);
1692
1693                                 $aOutlineResult = $oPlaceLookup->getOutlines($aResult['place_id'], $aResult['lon'], $aResult['lat'], $fDiameter/2);
1694                                 if ($aOutlineResult)
1695                                 {
1696                                         $aResult = array_merge($aResult, $aOutlineResult);
1697                                 }
1698
1699                                 if ($aResult['extra_place'] == 'city')
1700                                 {
1701                                         $aResult['class'] = 'place';
1702                                         $aResult['type'] = 'city';
1703                                         $aResult['rank_search'] = 16;
1704                                 }
1705
1706                                 // Is there an icon set for this type of result?
1707                                 if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['icon'])
1708                                                 && $aClassType[$aResult['class'].':'.$aResult['type']]['icon'])
1709                                 {
1710                                         $aResult['icon'] = CONST_Website_BaseURL.'images/mapicons/'.$aClassType[$aResult['class'].':'.$aResult['type']]['icon'].'.p.20.png';
1711                                 }
1712
1713                                 if (isset($aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'])
1714                                                 && $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'])
1715                                 {
1716                                         $aResult['label'] = $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'];
1717                                 }
1718                                 elseif (isset($aClassType[$aResult['class'].':'.$aResult['type']]['label'])
1719                                                 && $aClassType[$aResult['class'].':'.$aResult['type']]['label'])
1720                                 {
1721                                         $aResult['label'] = $aClassType[$aResult['class'].':'.$aResult['type']]['label'];
1722                                 }
1723                 // if tag '&addressdetails=1' is set in query
1724                                 if ($this->bIncludeAddressDetails)
1725                                 {
1726                     // getAddressDetails() is defined in lib.php and uses the SQL function get_addressdata in functions.sql
1727                                         $aResult['address'] = getAddressDetails($this->oDB, $sLanguagePrefArraySQL, $aResult['place_id'], $aResult['country_code'], $aResultPlaceIDs[$aResult['place_id']]);
1728                                         if ($aResult['extra_place'] == 'city' && !isset($aResult['address']['city']))
1729                                         {
1730                                                 $aResult['address'] = array_merge(array('city' => array_shift(array_values($aResult['address']))), $aResult['address']);
1731                                         }
1732                                 }
1733                                 if ($this->bIncludeExtraTags)
1734                                 {
1735                                         if ($aResult['extra'])
1736                                         {
1737                                                 $aResult['sExtraTags'] = json_decode($aResult['extra']);
1738                                         }
1739                                         else
1740                                         {
1741                                                 $aResult['sExtraTags'] = (object) array();
1742                                         }
1743                                 }
1744
1745                                 if ($this->bIncludeNameDetails)
1746                                 {
1747                                         if ($aResult['names'])
1748                                         {
1749                                                 $aResult['sNameDetails'] = json_decode($aResult['names']);
1750                                         }
1751                                         else
1752                                         {
1753                                                 $aResult['sNameDetails'] = (object) array();
1754                                         }
1755                                 }
1756
1757                                 // Adjust importance for the number of exact string matches in the result
1758                                 $aResult['importance'] = max(0.001,$aResult['importance']);
1759                                 $iCountWords = 0;
1760                                 $sAddress = $aResult['langaddress'];
1761                                 foreach($aRecheckWords as $i => $sWord)
1762                                 {
1763                                         if (stripos($sAddress, $sWord)!==false)
1764                                         {
1765                                                 $iCountWords++;
1766                                                 if (preg_match("/(^|,)\s*".preg_quote($sWord, '/')."\s*(,|$)/", $sAddress)) $iCountWords += 0.1;
1767                                         }
1768                                 }
1769
1770                                 $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
1771
1772                                 $aResult['name'] = $aResult['langaddress'];
1773                                 // secondary ordering (for results with same importance (the smaller the better):
1774                                 //   - approximate importance of address parts
1775                                 $aResult['foundorder'] = -$aResult['addressimportance']/10;
1776                                 //   - number of exact matches from the query
1777                                 if (isset($this->exactMatchCache[$aResult['place_id']]))
1778                                         $aResult['foundorder'] -= $this->exactMatchCache[$aResult['place_id']];
1779                                 else if (isset($this->exactMatchCache[$aResult['parent_place_id']]))
1780                                         $aResult['foundorder'] -= $this->exactMatchCache[$aResult['parent_place_id']];
1781                                 //  - importance of the class/type
1782                                 if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['importance'])
1783                                         && $aClassType[$aResult['class'].':'.$aResult['type']]['importance'])
1784                                 {
1785                                         $aResult['foundorder'] += 0.0001 * $aClassType[$aResult['class'].':'.$aResult['type']]['importance'];
1786                                 }
1787                                 else
1788                                 {
1789                                         $aResult['foundorder'] += 0.01;
1790                                 }
1791                                 if (CONST_Debug) { var_dump($aResult); }
1792                                 $aSearchResults[$iResNum] = $aResult;
1793                         }
1794                         uasort($aSearchResults, 'byImportance');
1795
1796                         $aOSMIDDone = array();
1797                         $aClassTypeNameDone = array();
1798                         $aToFilter = $aSearchResults;
1799                         $aSearchResults = array();
1800
1801                         $bFirst = true;
1802                         foreach($aToFilter as $iResNum => $aResult)
1803                         {
1804                                 $this->aExcludePlaceIDs[$aResult['place_id']] = $aResult['place_id'];
1805                                 if ($bFirst)
1806                                 {
1807                                         $fLat = $aResult['lat'];
1808                                         $fLon = $aResult['lon'];
1809                                         if (isset($aResult['zoom'])) $iZoom = $aResult['zoom'];
1810                                         $bFirst = false;
1811                                 }
1812                                 if (!$this->bDeDupe || (!isset($aOSMIDDone[$aResult['osm_type'].$aResult['osm_id']])
1813                                                         && !isset($aClassTypeNameDone[$aResult['osm_type'].$aResult['class'].$aResult['type'].$aResult['name'].$aResult['admin_level']])))
1814                                 {
1815                                         $aOSMIDDone[$aResult['osm_type'].$aResult['osm_id']] = true;
1816                                         $aClassTypeNameDone[$aResult['osm_type'].$aResult['class'].$aResult['type'].$aResult['name'].$aResult['admin_level']] = true;
1817                                         $aSearchResults[] = $aResult;
1818                                 }
1819
1820                                 // Absolute limit on number of results
1821                                 if (sizeof($aSearchResults) >= $this->iFinalLimit) break;
1822                         }
1823
1824                         return $aSearchResults;
1825
1826                 } // end lookup()
1827
1828
1829         } // end class
1830