lib/Geocode.php

   1 <?php
   2         class Geocode
   3         {
   4                 protected $oDB;
   5
   6                 protected $aLangPrefOrder = array();
   7
   8                 protected $bIncludeAddressDetails = false;
   9
  10                 protected $bIncludePolygonAsPoints = false;
  11                 protected $bIncludePolygonAsText = false;
  12                 protected $bIncludePolygonAsGeoJSON = false;
  13                 protected $bIncludePolygonAsKML = false;
  14                 protected $bIncludePolygonAsSVG = false;
  15
  16                 protected $aExcludePlaceIDs = array();
  17                 protected $bDeDupe = true;
  18                 protected $bReverseInPlan = false;
  19
  20                 protected $iLimit = 20;
  21                 protected $iFinalLimit = 10;
  22                 protected $iOffset = 0;
  23                 protected $bFallback = false;
  24
  25                 protected $aCountryCodes = false;
  26                 protected $aNearPoint = false;
  27
  28                 protected $bBoundedSearch = false;
  29                 protected $aViewBox = false;
  30                 protected $sViewboxSmallSQL = false;
  31                 protected $sViewboxLargeSQL = false;
  32                 protected $aRoutePoints = false;
  33
  34                 protected $iMaxRank = 20;
  35                 protected $iMinAddressRank = 0;
  36                 protected $iMaxAddressRank = 30;
  37                 protected $aAddressRankList = array();
  38                 protected $exactMatchCache = array();
  39
  40                 protected $sAllowedTypesSQLList = false;
  41
  42                 protected $sQuery = false;
  43                 protected $aStructuredQuery = false;
  44
  45                 function Geocode(&$oDB)
  46                 {
  47                         $this->oDB =& $oDB;
  48                 }
  49
  50                 function setReverseInPlan($bReverse)
  51                 {
  52                         $this->bReverseInPlan = $bReverse;
  53                 }
  54
  55                 function setLanguagePreference($aLangPref)
  56                 {
  57                         $this->aLangPrefOrder = $aLangPref;
  58                 }
  59
  60                 function setIncludeAddressDetails($bAddressDetails = true)
  61                 {
  62                         $this->bIncludeAddressDetails = (bool)$bAddressDetails;
  63                 }
  64
  65                 function getIncludeAddressDetails()
  66                 {
  67                         return $this->bIncludeAddressDetails;
  68                 }
  69
  70                 function setIncludePolygonAsPoints($b = true)
  71                 {
  72                         $this->bIncludePolygonAsPoints = $b;
  73                 }
  74
  75                 function getIncludePolygonAsPoints()
  76                 {
  77                         return $this->bIncludePolygonAsPoints;
  78                 }
  79
  80                 function setIncludePolygonAsText($b = true)
  81                 {
  82                         $this->bIncludePolygonAsText = $b;
  83                 }
  84
  85                 function getIncludePolygonAsText()
  86                 {
  87                         return $this->bIncludePolygonAsText;
  88                 }
  89
  90                 function setIncludePolygonAsGeoJSON($b = true)
  91                 {
  92                         $this->bIncludePolygonAsGeoJSON = $b;
  93                 }
  94
  95                 function setIncludePolygonAsKML($b = true)
  96                 {
  97                         $this->bIncludePolygonAsKML = $b;
  98                 }
  99
 100                 function setIncludePolygonAsSVG($b = true)
 101                 {
 102                         $this->bIncludePolygonAsSVG = $b;
 103                 }
 104
 105                 function setDeDupe($bDeDupe = true)
 106                 {
 107                         $this->bDeDupe = (bool)$bDeDupe;
 108                 }
 109
 110                 function setLimit($iLimit = 10)
 111                 {
 112                         if ($iLimit > 50) $iLimit = 50;
 113                         if ($iLimit < 1) $iLimit = 1;
 114
 115                         $this->iFinalLimit = $iLimit;
 116                         $this->iLimit = $this->iFinalLimit + min($this->iFinalLimit, 10);
 117                 }
 118
 119                 function setOffset($iOffset = 0)
 120                 {
 121                         $this->iOffset = $iOffset;
 122                 }
 123
 124                 function setFallback($bFallback = true)
 125                 {
 126                         $this->bFallback = (bool)$bFallback;
 127                 }
 128
 129                 function setExcludedPlaceIDs($a)
 130                 {
 131                         // TODO: force to int
 132                         $this->aExcludePlaceIDs = $a;
 133                 }
 134
 135                 function getExcludedPlaceIDs()
 136                 {
 137                         return $this->aExcludePlaceIDs;
 138                 }
 139
 140                 function setBounded($bBoundedSearch = true)
 141                 {
 142                         $this->bBoundedSearch = (bool)$bBoundedSearch;
 143                 }
 144
 145                 function setViewBox($fLeft, $fBottom, $fRight, $fTop)
 146                 {
 147                         $this->aViewBox = array($fLeft, $fBottom, $fRight, $fTop);
 148                 }
 149
 150                 function getViewBoxString()
 151                 {
 152                         if (!$this->aViewBox) return null;
 153                         return $this->aViewBox[0].','.$this->aViewBox[3].','.$this->aViewBox[2].','.$this->aViewBox[1];
 154                 }
 155
 156                 function setRoute($aRoutePoints)
 157                 {
 158                         $this->aRoutePoints = $aRoutePoints;
 159                 }
 160
 161                 function setFeatureType($sFeatureType)
 162                 {
 163                         switch($sFeatureType)
 164                         {
 165                         case 'country':
 166                                 $this->setRankRange(4, 4);
 167                                 break;
 168                         case 'state':
 169                                 $this->setRankRange(8, 8);
 170                                 break;
 171                         case 'city':
 172                                 $this->setRankRange(14, 16);
 173                                 break;
 174                         case 'settlement':
 175                                 $this->setRankRange(8, 20);
 176                                 break;
 177                         }
 178                 }
 179
 180                 function setRankRange($iMin, $iMax)
 181                 {
 182                         $this->iMinAddressRank = (int)$iMin;
 183                         $this->iMaxAddressRank = (int)$iMax;
 184                 }
 185
 186                 function setNearPoint($aNearPoint, $fRadiusDeg = 0.1)
 187                 {
 188                         $this->aNearPoint = array((float)$aNearPoint[0], (float)$aNearPoint[1], (float)$fRadiusDeg);
 189                 }
 190
 191                 function setCountryCodesList($aCountryCodes)
 192                 {
 193                         $this->aCountryCodes = $aCountryCodes;
 194                 }
 195
 196                 function setQuery($sQueryString)
 197                 {
 198                         $this->sQuery = $sQueryString;
 199                         $this->aStructuredQuery = false;
 200                 }
 201
 202                 function getQueryString()
 203                 {
 204                         return $this->sQuery;
 205                 }
 206
 207
 208                 function loadParamArray($aParams)
 209                 {
 210                         if (isset($aParams['addressdetails'])) $this->bIncludeAddressDetails = (bool)$aParams['addressdetails'];
 211                         if (isset($aParams['bounded'])) $this->bBoundedSearch = (bool)$aParams['bounded'];
 212                         if (isset($aParams['dedupe'])) $this->bDeDupe = (bool)$aParams['dedupe'];
 213
 214                         if (isset($aParams['limit'])) $this->setLimit((int)$aParams['limit']);
 215                         if (isset($aParams['offset'])) $this->iOffset = (int)$aParams['offset'];
 216
 217                         if (isset($aParams['fallback'])) $this->bFallback = (bool)$aParams['fallback'];
 218
 219                         // List of excluded Place IDs - used for more acurate pageing
 220                         if (isset($aParams['exclude_place_ids']) && $aParams['exclude_place_ids'])
 221                         {
 222                                 foreach(explode(',',$aParams['exclude_place_ids']) as $iExcludedPlaceID)
 223                                 {
 224                                         $iExcludedPlaceID = (int)$iExcludedPlaceID;
 225                                         if ($iExcludedPlaceID) $aExcludePlaceIDs[$iExcludedPlaceID] = $iExcludedPlaceID;
 226                                 }
 227                                 $this->aExcludePlaceIDs = $aExcludePlaceIDs;
 228                         }
 229
 230                         // Only certain ranks of feature
 231                         if (isset($aParams['featureType'])) $this->setFeatureType($aParams['featureType']);
 232                         if (isset($aParams['featuretype'])) $this->setFeatureType($aParams['featuretype']);
 233
 234                         // Country code list
 235                         if (isset($aParams['countrycodes']))
 236                         {
 237                                 $aCountryCodes = array();
 238                                 foreach(explode(',',$aParams['countrycodes']) as $sCountryCode)
 239                                 {
 240                                         if (preg_match('/^[a-zA-Z][a-zA-Z]$/', $sCountryCode))
 241                                         {
 242                                                 $aCountryCodes[] = strtolower($sCountryCode);
 243                                         }
 244                                 }
 245                                 $this->aCountryCodes = $aCountryCodes;
 246                         }
 247
 248                         if (isset($aParams['viewboxlbrt']) && $aParams['viewboxlbrt'])
 249                         {
 250                                 $aCoOrdinatesLBRT = explode(',',$aParams['viewboxlbrt']);
 251                                 $this->setViewBox($aCoOrdinatesLBRT[0], $aCoOrdinatesLBRT[1], $aCoOrdinatesLBRT[2], $aCoOrdinatesLBRT[3]);
 252                         }
 253                         else if (isset($aParams['viewbox']) && $aParams['viewbox'])
 254                         {
 255                                 $aCoOrdinatesLTRB = explode(',',$aParams['viewbox']);
 256                                 $this->setViewBox($aCoOrdinatesLTRB[0], $aCoOrdinatesLTRB[3], $aCoOrdinatesLTRB[2], $aCoOrdinatesLTRB[1]);
 257                         }
 258
 259                         if (isset($aParams['route']) && $aParams['route'] && isset($aParams['routewidth']) && $aParams['routewidth'])
 260                         {
 261                                 $aPoints = explode(',',$aParams['route']);
 262                                 if (sizeof($aPoints) % 2 != 0)
 263                                 {
 264                                         userError("Uneven number of points");
 265                                         exit;
 266                                 }
 267                                 $fPrevCoord = false;
 268                                 $aRoute = array();
 269                                 foreach($aPoints as $i => $fPoint)
 270                                 {
 271                                         if ($i%2)
 272                                         {
 273                                                 $aRoute[] = array((float)$fPoint, $fPrevCoord);
 274                                         }
 275                                         else
 276                                         {
 277                                                 $fPrevCoord = (float)$fPoint;
 278                                         }
 279                                 }
 280                                 $this->aRoutePoints = $aRoute;
 281                         }
 282                 }
 283
 284                 function setQueryFromParams($aParams)
 285                 {
 286                         // Search query
 287                         $sQuery = (isset($aParams['q'])?trim($aParams['q']):'');
 288                         if (!$sQuery)
 289                         {
 290                                 $this->setStructuredQuery(@$aParams['amenity'], @$aParams['street'], @$aParams['city'], @$aParams['county'], @$aParams['state'], @$aParams['country'], @$aParams['postalcode']);
 291                                 $this->setReverseInPlan(false);
 292                         }
 293                         else
 294                         {
 295                                 $this->setQuery($sQuery);
 296                         }
 297                 }
 298
 299                 function loadStructuredAddressElement($sValue, $sKey, $iNewMinAddressRank, $iNewMaxAddressRank, $aItemListValues)
 300                 {
 301                         $sValue = trim($sValue);
 302                         if (!$sValue) return false;
 303                         $this->aStructuredQuery[$sKey] = $sValue;
 304                         if ($this->iMinAddressRank == 0 && $this->iMaxAddressRank == 30)
 305                         {
 306                                 $this->iMinAddressRank = $iNewMinAddressRank;
 307                                 $this->iMaxAddressRank = $iNewMaxAddressRank;
 308                         }
 309                         if ($aItemListValues) $this->aAddressRankList = array_merge($this->aAddressRankList, $aItemListValues);
 310                         return true;
 311                 }
 312
 313                 function setStructuredQuery($sAmentiy = false, $sStreet = false, $sCity = false, $sCounty = false, $sState = false, $sCountry = false, $sPostalCode = false)
 314                 {
 315                         $this->sQuery = false;
 316
 317                         // Reset
 318                         $this->iMinAddressRank = 0;
 319                         $this->iMaxAddressRank = 30;
 320                         $this->aAddressRankList = array();
 321
 322                         $this->aStructuredQuery = array();
 323                         $this->sAllowedTypesSQLList = '';
 324
 325                         $this->loadStructuredAddressElement($sAmentiy, 'amenity', 26, 30, false);
 326                         $this->loadStructuredAddressElement($sStreet, 'street', 26, 30, false);
 327                         $this->loadStructuredAddressElement($sCity, 'city', 14, 24, false);
 328                         $this->loadStructuredAddressElement($sCounty, 'county', 9, 13, false);
 329                         $this->loadStructuredAddressElement($sState, 'state', 8, 8, false);
 330                         $this->loadStructuredAddressElement($sPostalCode, 'postalcode' , 5, 11, array(5, 11));
 331                         $this->loadStructuredAddressElement($sCountry, 'country', 4, 4, false);
 332
 333                         if (sizeof($this->aStructuredQuery) > 0)
 334                         {
 335                                 $this->sQuery = join(', ', $this->aStructuredQuery);
 336                                 if ($this->iMaxAddressRank < 30)
 337                                 {
 338                                         $sAllowedTypesSQLList = '(\'place\',\'boundary\')';
 339                                 }
 340                         }
 341                 }
 342
 343                 function fallbackStructuredQuery()
 344                 {
 345                         if (!$this->aStructuredQuery) return false;
 346
 347                         $aParams = $this->aStructuredQuery;
 348
 349                         if (sizeof($aParams) == 1) return false;
 350
 351                         $aOrderToFallback = array('postalcode', 'street', 'city', 'county', 'state');
 352
 353                         foreach($aOrderToFallback as $sType)
 354                         {
 355                                 if (isset($aParams[$sType]))
 356                                 {
 357                                         unset($aParams[$sType]);
 358                                         $this->setStructuredQuery(@$aParams['amenity'], @$aParams['street'], @$aParams['city'], @$aParams['county'], @$aParams['state'], @$aParams['country'], @$aParams['postalcode']);
 359                                         return true;
 360                                 }
 361                         }
 362
 363                         return false;
 364                 }
 365
 366                 function getDetails($aPlaceIDs)
 367                 {
 368                         if (sizeof($aPlaceIDs) == 0)  return array();
 369
 370                         $sLanguagePrefArraySQL = "ARRAY[".join(',',array_map("getDBQuoted",$this->aLangPrefOrder))."]";
 371
 372                         // Get the details for display (is this a redundant extra step?)
 373                         $sPlaceIDs = join(',',$aPlaceIDs);
 374
 375                         $sImportanceSQL = '';
 376                         if ($this->sViewboxSmallSQL) $sImportanceSQL .= " case when ST_Contains($this->sViewboxSmallSQL, ST_Collect(centroid)) THEN 1 ELSE 0.75 END * ";
 377                         if ($this->sViewboxLargeSQL) $sImportanceSQL .= " case when ST_Contains($this->sViewboxLargeSQL, ST_Collect(centroid)) THEN 1 ELSE 0.75 END * ";
 378
 379                         $sSQL = "select osm_type,osm_id,class,type,admin_level,rank_search,rank_address,min(place_id) as place_id, min(parent_place_id) as parent_place_id, calculated_country_code as country_code,";
 380                         $sSQL .= "get_address_by_language(place_id, $sLanguagePrefArraySQL) as langaddress,";
 381                         $sSQL .= "get_name_by_language(name, $sLanguagePrefArraySQL) as placename,";
 382                         $sSQL .= "get_name_by_language(name, ARRAY['ref']) as ref,";
 383                         $sSQL .= "avg(ST_X(centroid)) as lon,avg(ST_Y(centroid)) as lat, ";
 384                         $sSQL .= $sImportanceSQL."coalesce(importance,0.75-(rank_search::float/40)) as importance, ";
 385                         $sSQL .= "(select max(p.importance*(p.rank_address+2)) from place_addressline s, placex p where s.place_id = min(CASE WHEN placex.rank_search < 28 THEN placex.place_id ELSE placex.parent_place_id END) and p.place_id = s.address_place_id and s.isaddress and p.importance is not null) as addressimportance, ";
 386                         $sSQL .= "(extratags->'place') as extra_place ";
 387                         $sSQL .= "from placex where place_id in ($sPlaceIDs) ";
 388                         $sSQL .= "and (placex.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
 389                         if (14 >= $this->iMinAddressRank && 14 <= $this->iMaxAddressRank) $sSQL .= " OR (extratags->'place') = 'city'";
 390                         if ($this->aAddressRankList) $sSQL .= " OR placex.rank_address in (".join(',',$this->aAddressRankList).")";
 391                         $sSQL .= ") ";
 392                         if ($this->sAllowedTypesSQLList) $sSQL .= "and placex.class in $this->sAllowedTypesSQLList ";
 393                         $sSQL .= "and linked_place_id is null ";
 394                         $sSQL .= "group by osm_type,osm_id,class,type,admin_level,rank_search,rank_address,calculated_country_code,importance";
 395                         if (!$this->bDeDupe) $sSQL .= ",place_id";
 396                         $sSQL .= ",langaddress ";
 397                         $sSQL .= ",placename ";
 398                         $sSQL .= ",ref ";
 399                         $sSQL .= ",extratags->'place' ";
 400
 401                         if (30 >= $this->iMinAddressRank && 30 <= $this->iMaxAddressRank)
 402                         {
 403                                 $sSQL .= " union ";
 404                                 $sSQL .= "select 'T' as osm_type,place_id as osm_id,'place' as class,'house' as type,null as admin_level,30 as rank_search,30 as rank_address,min(place_id) as place_id, min(parent_place_id) as parent_place_id,'us' as country_code,";
 405                                 $sSQL .= "get_address_by_language(place_id, $sLanguagePrefArraySQL) as langaddress,";
 406                                 $sSQL .= "null as placename,";
 407                                 $sSQL .= "null as ref,";
 408                                 $sSQL .= "avg(ST_X(centroid)) as lon,avg(ST_Y(centroid)) as lat, ";
 409                                 $sSQL .= $sImportanceSQL."-1.15 as importance, ";
 410                                 $sSQL .= "(select max(p.importance*(p.rank_address+2)) from place_addressline s, placex p where s.place_id = min(location_property_tiger.parent_place_id) and p.place_id = s.address_place_id and s.isaddress and p.importance is not null) as addressimportance, ";
 411                                 $sSQL .= "null as extra_place ";
 412                                 $sSQL .= "from location_property_tiger where place_id in ($sPlaceIDs) ";
 413                                 $sSQL .= "and 30 between $this->iMinAddressRank and $this->iMaxAddressRank ";
 414                                 $sSQL .= "group by place_id";
 415                                 if (!$this->bDeDupe) $sSQL .= ",place_id ";
 416                                 $sSQL .= " union ";
 417                                 $sSQL .= "select 'L' as osm_type,place_id as osm_id,'place' as class,'house' as type,null as admin_level,30 as rank_search,30 as rank_address,min(place_id) as place_id, min(parent_place_id) as parent_place_id,'us' as country_code,";
 418                                 $sSQL .= "get_address_by_language(place_id, $sLanguagePrefArraySQL) as langaddress,";
 419                                 $sSQL .= "null as placename,";
 420                                 $sSQL .= "null as ref,";
 421                                 $sSQL .= "avg(ST_X(centroid)) as lon,avg(ST_Y(centroid)) as lat, ";
 422                                 $sSQL .= $sImportanceSQL."-1.10 as importance, ";
 423                                 $sSQL .= "(select max(p.importance*(p.rank_address+2)) from place_addressline s, placex p where s.place_id = min(location_property_aux.parent_place_id) and p.place_id = s.address_place_id and s.isaddress and p.importance is not null) as addressimportance, ";
 424                                 $sSQL .= "null as extra_place ";
 425                                 $sSQL .= "from location_property_aux where place_id in ($sPlaceIDs) ";
 426                                 $sSQL .= "and 30 between $this->iMinAddressRank and $this->iMaxAddressRank ";
 427                                 $sSQL .= "group by place_id";
 428                                 if (!$this->bDeDupe) $sSQL .= ",place_id";
 429                                 $sSQL .= ",get_address_by_language(place_id, $sLanguagePrefArraySQL) ";
 430                         }
 431
 432                         $sSQL .= " order by importance desc";
 433                         if (CONST_Debug) { echo "<hr>"; var_dump($sSQL); }
 434                         $aSearchResults = $this->oDB->getAll($sSQL);
 435
 436                         if (PEAR::IsError($aSearchResults))
 437                         {
 438                                 failInternalError("Could not get details for place.", $sSQL, $aSearchResults);
 439                         }
 440
 441                         return $aSearchResults;
 442                 }
 443
 444                 /* Perform the actual query lookup.
 445
 446                         Returns an ordered list of results, each with the following fields:
 447                           osm_type: type of corresponding OSM object
 448                                                         N - node
 449                                                         W - way
 450                                                         R - relation
 451                                                         P - postcode (internally computed)
 452                           osm_id: id of corresponding OSM object
 453                           class: general object class (corresponds to tag key of primary OSM tag)
 454                           type: subclass of object (corresponds to tag value of primary OSM tag)
 455                           admin_level: see http://wiki.openstreetmap.org/wiki/Admin_level
 456                           rank_search: rank in search hierarchy
 457                                                         (see also http://wiki.openstreetmap.org/wiki/Nominatim/Development_overview#Country_to_street_level)
 458                           rank_address: rank in address hierarchy (determines orer in address)
 459                           place_id: internal key (may differ between different instances)
 460                           country_code: ISO country code
 461                           langaddress: localized full address
 462                           placename: localized name of object
 463                           ref: content of ref tag (if available)
 464                           lon: longitude
 465                           lat: latitude
 466                           importance: importance of place based on Wikipedia link count
 467                           addressimportance: cumulated importance of address elements
 468                           extra_place: type of place (for admin boundaries, if there is a place tag)
 469                           aBoundingBox: bounding Box
 470                           label: short description of the object class/type (English only)
 471                           name: full name (currently the same as langaddress)
 472                           foundorder: secondary ordering for places with same importance
 473                 */
 474                 function lookup()
 475                 {
 476                         if (!$this->sQuery && !$this->aStructuredQuery) return false;
 477
 478                         $sLanguagePrefArraySQL = "ARRAY[".join(',',array_map("getDBQuoted",$this->aLangPrefOrder))."]";
 479
 480                         $sCountryCodesSQL = false;
 481                         if ($this->aCountryCodes && sizeof($this->aCountryCodes))
 482                         {
 483                                 $sCountryCodesSQL = join(',', array_map('addQuotes', $this->aCountryCodes));
 484                         }
 485
 486                         $sQuery = $this->sQuery;
 487
 488                         // Conflicts between US state abreviations and various words for 'the' in different languages
 489                         if (isset($this->aLangPrefOrder['name:en']))
 490                         {
 491                                 $sQuery = preg_replace('/(^|,)\s*il\s*(,|$)/','\1illinois\2', $sQuery);
 492                                 $sQuery = preg_replace('/(^|,)\s*al\s*(,|$)/','\1alabama\2', $sQuery);
 493                                 $sQuery = preg_replace('/(^|,)\s*la\s*(,|$)/','\1louisiana\2', $sQuery);
 494                         }
 495
 496                         // View Box SQL
 497                         $sViewboxCentreSQL = false;
 498                         $bBoundingBoxSearch = false;
 499                         if ($this->aViewBox)
 500                         {
 501                                 $fHeight = $this->aViewBox[0]-$this->aViewBox[2];
 502                                 $fWidth = $this->aViewBox[1]-$this->aViewBox[3];
 503                                 $aBigViewBox[0] = $this->aViewBox[0] + $fHeight;
 504                                 $aBigViewBox[2] = $this->aViewBox[2] - $fHeight;
 505                                 $aBigViewBox[1] = $this->aViewBox[1] + $fWidth;
 506                                 $aBigViewBox[3] = $this->aViewBox[3] - $fWidth;
 507
 508                                 $this->sViewboxSmallSQL = "ST_SetSRID(ST_MakeBox2D(ST_Point(".(float)$this->aViewBox[0].",".(float)$this->aViewBox[1]."),ST_Point(".(float)$this->aViewBox[2].",".(float)$this->aViewBox[3].")),4326)";
 509                                 $this->sViewboxLargeSQL = "ST_SetSRID(ST_MakeBox2D(ST_Point(".(float)$aBigViewBox[0].",".(float)$aBigViewBox[1]."),ST_Point(".(float)$aBigViewBox[2].",".(float)$aBigViewBox[3].")),4326)";
 510                                 $bBoundingBoxSearch = $this->bBoundedSearch;
 511                         }
 512
 513                         // Route SQL
 514                         if ($this->aRoutePoints)
 515                         {
 516                                 $sViewboxCentreSQL = "ST_SetSRID('LINESTRING(";
 517                                 $bFirst = true;
 518                                 foreach($this->aRoutePoints as $aPoint)
 519                                 {
 520                                         if (!$bFirst) $sViewboxCentreSQL .= ",";
 521                                         $sViewboxCentreSQL .= $aPoint[0].' '.$aPoint[1];
 522                                         $bFirst = false;
 523                                 }
 524                                 $sViewboxCentreSQL .= ")'::geometry,4326)";
 525
 526                                 $sSQL = "select st_buffer(".$sViewboxCentreSQL.",".(float)($_GET['routewidth']/69).")";
 527                                 $this->sViewboxSmallSQL = $this->oDB->getOne($sSQL);
 528                                 if (PEAR::isError($this->sViewboxSmallSQL))
 529                                 {
 530                                         failInternalError("Could not get small viewbox.", $sSQL, $this->sViewboxSmallSQL);
 531                                 }
 532                                 $this->sViewboxSmallSQL = "'".$this->sViewboxSmallSQL."'::geometry";
 533
 534                                 $sSQL = "select st_buffer(".$sViewboxCentreSQL.",".(float)($_GET['routewidth']/30).")";
 535                                 $this->sViewboxLargeSQL = $this->oDB->getOne($sSQL);
 536                                 if (PEAR::isError($this->sViewboxLargeSQL))
 537                                 {
 538                                         failInternalError("Could not get large viewbox.", $sSQL, $this->sViewboxLargeSQL);
 539                                 }
 540                                 $this->sViewboxLargeSQL = "'".$this->sViewboxLargeSQL."'::geometry";
 541                                 $bBoundingBoxSearch = $this->bBoundedSearch;
 542                         }
 543
 544                         // Do we have anything that looks like a lat/lon pair?
 545                         if (preg_match('/\\b([NS])[ ]+([0-9]+[0-9.]*)[ ]+([0-9.]+)?[, ]+([EW])[ ]+([0-9]+)[ ]+([0-9]+[0-9.]*)?\\b/', $sQuery, $aData))
 546                         {
 547                                 $fQueryLat = ($aData[1]=='N'?1:-1) * ($aData[2] + $aData[3]/60);
 548                                 $fQueryLon = ($aData[4]=='E'?1:-1) * ($aData[5] + $aData[6]/60);
 549                                 if ($fQueryLat <= 90.1 && $fQueryLat >= -90.1 && $fQueryLon <= 180.1 && $fQueryLon >= -180.1)
 550                                 {
 551                                         $this->setNearPoint(array($fQueryLat, $fQueryLon));
 552                                         $sQuery = trim(str_replace($aData[0], ' ', $sQuery));
 553                                 }
 554                         }
 555                         elseif (preg_match('/\\b([0-9]+)[ ]+([0-9]+[0-9.]*)?[ ]+([NS])[, ]+([0-9]+)[ ]+([0-9]+[0-9.]*)?[ ]+([EW])\\b/', $sQuery, $aData))
 556                         {
 557                                 $fQueryLat = ($aData[3]=='N'?1:-1) * ($aData[1] + $aData[2]/60);
 558                                 $fQueryLon = ($aData[6]=='E'?1:-1) * ($aData[4] + $aData[5]/60);
 559                                 if ($fQueryLat <= 90.1 && $fQueryLat >= -90.1 && $fQueryLon <= 180.1 && $fQueryLon >= -180.1)
 560                                 {
 561                                         $this->setNearPoint(array($fQueryLat, $fQueryLon));
 562                                         $sQuery = trim(str_replace($aData[0], ' ', $sQuery));
 563                                 }
 564                         }
 565                         elseif (preg_match('/(\\[|^|\\b)(-?[0-9]+[0-9]*\\.[0-9]+)[, ]+(-?[0-9]+[0-9]*\\.[0-9]+)(\\]|$|\\b)/', $sQuery, $aData))
 566                         {
 567                                 $fQueryLat = $aData[2];
 568                                 $fQueryLon = $aData[3];
 569                                 if ($fQueryLat <= 90.1 && $fQueryLat >= -90.1 && $fQueryLon <= 180.1 && $fQueryLon >= -180.1)
 570                                 {
 571                                         $this->setNearPoint(array($fQueryLat, $fQueryLon));
 572                                         $sQuery = trim(str_replace($aData[0], ' ', $sQuery));
 573                                 }
 574                         }
 575
 576                         $aSearchResults = array();
 577                         if ($sQuery || $this->aStructuredQuery)
 578                         {
 579                                 // Start with a blank search
 580                                 $aSearches = array(
 581                                         array('iSearchRank' => 0, 'iNamePhrase' => -1, 'sCountryCode' => false, 'aName'=>array(), 'aAddress'=>array(), 'aFullNameAddress'=>array(),
 582                                               'aNameNonSearch'=>array(), 'aAddressNonSearch'=>array(),
 583                                               'sOperator'=>'', 'aFeatureName' => array(), 'sClass'=>'', 'sType'=>'', 'sHouseNumber'=>'', 'fLat'=>'', 'fLon'=>'', 'fRadius'=>'')
 584                                 );
 585
 586                                 // Do we have a radius search?
 587                                 $sNearPointSQL = false;
 588                                 if ($this->aNearPoint)
 589                                 {
 590                                         $sNearPointSQL = "ST_SetSRID(ST_Point(".(float)$this->aNearPoint[1].",".(float)$this->aNearPoint[0]."),4326)";
 591                                         $aSearches[0]['fLat'] = (float)$this->aNearPoint[0];
 592                                         $aSearches[0]['fLon'] = (float)$this->aNearPoint[1];
 593                                         $aSearches[0]['fRadius'] = (float)$this->aNearPoint[2];
 594                                 }
 595
 596                                 // Any 'special' terms in the search?
 597                                 $bSpecialTerms = false;
 598                                 preg_match_all('/\\[(.*)=(.*)\\]/', $sQuery, $aSpecialTermsRaw, PREG_SET_ORDER);
 599                                 $aSpecialTerms = array();
 600                                 foreach($aSpecialTermsRaw as $aSpecialTerm)
 601                                 {
 602                                         $sQuery = str_replace($aSpecialTerm[0], ' ', $sQuery);
 603                                         $aSpecialTerms[strtolower($aSpecialTerm[1])] = $aSpecialTerm[2];
 604                                 }
 605
 606                                 preg_match_all('/\\[([\\w ]*)\\]/u', $sQuery, $aSpecialTermsRaw, PREG_SET_ORDER);
 607                                 $aSpecialTerms = array();
 608                                 if (isset($aStructuredQuery['amenity']) && $aStructuredQuery['amenity'])
 609                                 {
 610                                         $aSpecialTermsRaw[] = array('['.$aStructuredQuery['amenity'].']', $aStructuredQuery['amenity']);
 611                                         unset($aStructuredQuery['amenity']);
 612                                 }
 613                                 foreach($aSpecialTermsRaw as $aSpecialTerm)
 614                                 {
 615                                         $sQuery = str_replace($aSpecialTerm[0], ' ', $sQuery);
 616                                         $sToken = $this->oDB->getOne("select make_standard_name('".$aSpecialTerm[1]."') as string");
 617                                         $sSQL = 'select * from (select word_id,word_token, word, class, type, country_code, operator';
 618                                         $sSQL .= ' from word where word_token in (\' '.$sToken.'\')) as x where (class is not null and class not in (\'place\')) or country_code is not null';
 619                                         if (CONST_Debug) var_Dump($sSQL);
 620                                         $aSearchWords = $this->oDB->getAll($sSQL);
 621                                         $aNewSearches = array();
 622                                         foreach($aSearches as $aSearch)
 623                                         {
 624                                                 foreach($aSearchWords as $aSearchTerm)
 625                                                 {
 626                                                         $aNewSearch = $aSearch;
 627                                                         if ($aSearchTerm['country_code'])
 628                                                         {
 629                                                                 $aNewSearch['sCountryCode'] = strtolower($aSearchTerm['country_code']);
 630                                                                 $aNewSearches[] = $aNewSearch;
 631                                                                 $bSpecialTerms = true;
 632                                                         }
 633                                                         if ($aSearchTerm['class'])
 634                                                         {
 635                                                                 $aNewSearch['sClass'] = $aSearchTerm['class'];
 636                                                                 $aNewSearch['sType'] = $aSearchTerm['type'];
 637                                                                 $aNewSearches[] = $aNewSearch;
 638                                                                 $bSpecialTerms = true;
 639                                                         }
 640                                                 }
 641                                         }
 642                                         $aSearches = $aNewSearches;
 643                                 }
 644
 645                                 // Split query into phrases
 646                                 // Commas are used to reduce the search space by indicating where phrases split
 647                                 if ($this->aStructuredQuery)
 648                                 {
 649                                         $aPhrases = $this->aStructuredQuery;
 650                                         $bStructuredPhrases = true;
 651                                 }
 652                                 else
 653                                 {
 654                                         $aPhrases = explode(',',$sQuery);
 655                                         $bStructuredPhrases = false;
 656                                 }
 657
 658                                 // Convert each phrase to standard form
 659                                 // Create a list of standard words
 660                                 // Get all 'sets' of words
 661                                 // Generate a complete list of all
 662                                 $aTokens = array();
 663                                 foreach($aPhrases as $iPhrase => $sPhrase)
 664                                 {
 665                                         $aPhrase = $this->oDB->getRow("select make_standard_name('".pg_escape_string($sPhrase)."') as string");
 666                                         if (PEAR::isError($aPhrase))
 667                                         {
 668                                                 userError("Illegal query string (not an UTF-8 string): ".$sPhrase);
 669                                                 if (CONST_Debug) var_dump($aPhrase);
 670                                                 exit;
 671                                         }
 672                                         if (trim($aPhrase['string']))
 673                                         {
 674                                                 $aPhrases[$iPhrase] = $aPhrase;
 675                                                 $aPhrases[$iPhrase]['words'] = explode(' ',$aPhrases[$iPhrase]['string']);
 676                                                 $aPhrases[$iPhrase]['wordsets'] = getWordSets($aPhrases[$iPhrase]['words'], 0);
 677                                                 $aTokens = array_merge($aTokens, getTokensFromSets($aPhrases[$iPhrase]['wordsets']));
 678                                         }
 679                                         else
 680                                         {
 681                                                 unset($aPhrases[$iPhrase]);
 682                                         }
 683                                 }
 684
 685                                 // Reindex phrases - we make assumptions later on that they are numerically keyed in order
 686                                 $aPhraseTypes = array_keys($aPhrases);
 687                                 $aPhrases = array_values($aPhrases);
 688
 689                                 if (sizeof($aTokens))
 690                                 {
 691                                         // Check which tokens we have, get the ID numbers
 692                                         $sSQL = 'select word_id,word_token, word, class, type, country_code, operator, search_name_count';
 693                                         $sSQL .= ' from word where word_token in ('.join(',',array_map("getDBQuoted",$aTokens)).')';
 694
 695                                         if (CONST_Debug) var_Dump($sSQL);
 696
 697                                         $aValidTokens = array();
 698                                         if (sizeof($aTokens)) $aDatabaseWords = $this->oDB->getAll($sSQL);
 699                                         else $aDatabaseWords = array();
 700                                         if (PEAR::IsError($aDatabaseWords))
 701                                         {
 702                                                 failInternalError("Could not get word tokens.", $sSQL, $aDatabaseWords);
 703                                         }
 704                                         $aPossibleMainWordIDs = array();
 705                                         $aWordFrequencyScores = array();
 706                                         foreach($aDatabaseWords as $aToken)
 707                                         {
 708                                                 // Very special case - require 2 letter country param to match the country code found
 709                                                 if ($bStructuredPhrases && $aToken['country_code'] && !empty($aStructuredQuery['country'])
 710                                                                 && strlen($aStructuredQuery['country']) == 2 && strtolower($aStructuredQuery['country']) != $aToken['country_code'])
 711                                                 {
 712                                                         continue;
 713                                                 }
 714
 715                                                 if (isset($aValidTokens[$aToken['word_token']]))
 716                                                 {
 717                                                         $aValidTokens[$aToken['word_token']][] = $aToken;
 718                                                 }
 719                                                 else
 720                                                 {
 721                                                         $aValidTokens[$aToken['word_token']] = array($aToken);
 722                                                 }
 723                                                 if (!$aToken['class'] && !$aToken['country_code']) $aPossibleMainWordIDs[$aToken['word_id']] = 1;
 724                                                 $aWordFrequencyScores[$aToken['word_id']] = $aToken['search_name_count'] + 1;
 725                                         }
 726                                         if (CONST_Debug) var_Dump($aPhrases, $aValidTokens);
 727
 728                                         // Try and calculate GB postcodes we might be missing
 729                                         foreach($aTokens as $sToken)
 730                                         {
 731                                                 // Source of gb postcodes is now definitive - always use
 732                                                 if (preg_match('/^([A-Z][A-Z]?[0-9][0-9A-Z]? ?[0-9])([A-Z][A-Z])$/', strtoupper(trim($sToken)), $aData))
 733                                                 {
 734                                                         if (substr($aData[1],-2,1) != ' ')
 735                                                         {
 736                                                                 $aData[0] = substr($aData[0],0,strlen($aData[1]-1)).' '.substr($aData[0],strlen($aData[1]-1));
 737                                                                 $aData[1] = substr($aData[1],0,-1).' '.substr($aData[1],-1,1);
 738                                                         }
 739                                                         $aGBPostcodeLocation = gbPostcodeCalculate($aData[0], $aData[1], $aData[2], $this->oDB);
 740                                                         if ($aGBPostcodeLocation)
 741                                                         {
 742                                                                 $aValidTokens[$sToken] = $aGBPostcodeLocation;
 743                                                         }
 744                                                 }
 745                                                 // US ZIP+4 codes - if there is no token,
 746                                                 //      merge in the 5-digit ZIP code
 747                                                 else if (!isset($aValidTokens[$sToken]) && preg_match('/^([0-9]{5}) [0-9]{4}$/', $sToken, $aData))
 748                                                 {
 749                                                         if (isset($aValidTokens[$aData[1]]))
 750                                                         {
 751                                                                 foreach($aValidTokens[$aData[1]] as $aToken)
 752                                                                 {
 753                                                                         if (!$aToken['class'])
 754                                                                         {
 755                                                                                 if (isset($aValidTokens[$sToken]))
 756                                                                                 {
 757                                                                                         $aValidTokens[$sToken][] = $aToken;
 758                                                                                 }
 759                                                                                 else
 760                                                                                 {
 761                                                                                         $aValidTokens[$sToken] = array($aToken);
 762                                                                                 }
 763                                                                         }
 764                                                                 }
 765                                                         }
 766                                                 }
 767                                         }
 768
 769                                         foreach($aTokens as $sToken)
 770                                         {
 771                                                 // Unknown single word token with a number - assume it is a house number
 772                                                 if (!isset($aValidTokens[' '.$sToken]) && strpos($sToken,' ') === false && preg_match('/[0-9]/', $sToken))
 773                                                 {
 774                                                         $aValidTokens[' '.$sToken] = array(array('class'=>'place','type'=>'house'));
 775                                                 }
 776                                         }
 777
 778                                         // Any words that have failed completely?
 779                                         // TODO: suggestions
 780
 781                                         // Start the search process
 782                                         $aResultPlaceIDs = array();
 783
 784                                         /*
 785                                            Calculate all searches using aValidTokens i.e.
 786                                            'Wodsworth Road, Sheffield' =>
 787
 788                                            Phrase Wordset
 789                                            0      0       (wodsworth road)
 790                                            0      1       (wodsworth)(road)
 791                                            1      0       (sheffield)
 792
 793                                            Score how good the search is so they can be ordered
 794                                          */
 795                                         foreach($aPhrases as $iPhrase => $sPhrase)
 796                                         {
 797                                                 $aNewPhraseSearches = array();
 798                                                 if ($bStructuredPhrases) $sPhraseType = $aPhraseTypes[$iPhrase];
 799                                                 else $sPhraseType = '';
 800
 801                                                 foreach($aPhrases[$iPhrase]['wordsets'] as $iWordSet => $aWordset)
 802                                                 {
 803                                                         // Too many permutations - too expensive
 804                                                         if ($iWordSet > 120) break;
 805
 806                                                         $aWordsetSearches = $aSearches;
 807
 808                                                         // Add all words from this wordset
 809                                                         foreach($aWordset as $iToken => $sToken)
 810                                                         {
 811                                                                 //echo "<br><b>$sToken</b>";
 812                                                                 $aNewWordsetSearches = array();
 813
 814                                                                 foreach($aWordsetSearches as $aCurrentSearch)
 815                                                                 {
 816                                                                         //echo "<i>";
 817                                                                         //var_dump($aCurrentSearch);
 818                                                                         //echo "</i>";
 819
 820                                                                         // If the token is valid
 821                                                                         if (isset($aValidTokens[' '.$sToken]))
 822                                                                         {
 823                                                                                 foreach($aValidTokens[' '.$sToken] as $aSearchTerm)
 824                                                                                 {
 825                                                                                         $aSearch = $aCurrentSearch;
 826                                                                                         $aSearch['iSearchRank']++;
 827                                                                                         if (($sPhraseType == '' || $sPhraseType == 'country') && !empty($aSearchTerm['country_code']) && $aSearchTerm['country_code'] != '0')
 828                                                                                         {
 829                                                                                                 if ($aSearch['sCountryCode'] === false)
 830                                                                                                 {
 831                                                                                                         $aSearch['sCountryCode'] = strtolower($aSearchTerm['country_code']);
 832                                                                                                         // Country is almost always at the end of the string - increase score for finding it anywhere else (optimisation)
 833                                                                                                         // If reverse order is enabled, it may appear at the beginning as well.
 834                                                                                                         if (($iToken+1 != sizeof($aWordset) || $iPhrase+1 != sizeof($aPhrases)) &&
 835                                                                                                                         (!$this->bReverseInPlan || $iToken > 0 || $iPhrase > 0))
 836                                                                                                         {
 837                                                                                                                 $aSearch['iSearchRank'] += 5;
 838                                                                                                         }
 839                                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 840                                                                                                 }
 841                                                                                         }
 842                                                                                         elseif (isset($aSearchTerm['lat']) && $aSearchTerm['lat'] !== '' && $aSearchTerm['lat'] !== null)
 843                                                                                         {
 844                                                                                                 if ($aSearch['fLat'] === '')
 845                                                                                                 {
 846                                                                                                         $aSearch['fLat'] = $aSearchTerm['lat'];
 847                                                                                                         $aSearch['fLon'] = $aSearchTerm['lon'];
 848                                                                                                         $aSearch['fRadius'] = $aSearchTerm['radius'];
 849                                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 850                                                                                                 }
 851                                                                                         }
 852                                                                                         elseif ($sPhraseType == 'postalcode')
 853                                                                                         {
 854                                                                                                 // 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
 855                                                                                                 if (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
 856                                                                                                 {
 857                                                                                                         // If we already have a name try putting the postcode first
 858                                                                                                         if (sizeof($aSearch['aName']))
 859                                                                                                         {
 860                                                                                                                 $aNewSearch = $aSearch;
 861                                                                                                                 $aNewSearch['aAddress'] = array_merge($aNewSearch['aAddress'], $aNewSearch['aName']);
 862                                                                                                                 $aNewSearch['aName'] = array();
 863                                                                                                                 $aNewSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 864                                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aNewSearch;
 865                                                                                                         }
 866
 867                                                                                                         if (sizeof($aSearch['aName']))
 868                                                                                                         {
 869                                                                                                                 if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strlen($sToken) < 4 || strpos($sToken, ' ') !== false))
 870                                                                                                                 {
 871                                                                                                                         $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 872                                                                                                                 }
 873                                                                                                                 else
 874                                                                                                                 {
 875                                                                                                                         $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 876                                                                                                                         $aSearch['iSearchRank'] += 1000; // skip;
 877                                                                                                                 }
 878                                                                                                         }
 879                                                                                                         else
 880                                                                                                         {
 881                                                                                                                 $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 882                                                                                                                 //$aSearch['iNamePhrase'] = $iPhrase;
 883                                                                                                         }
 884                                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 885                                                                                                 }
 886
 887                                                                                         }
 888                                                                                         elseif (($sPhraseType == '' || $sPhraseType == 'street') && $aSearchTerm['class'] == 'place' && $aSearchTerm['type'] == 'house')
 889                                                                                         {
 890                                                                                                 if ($aSearch['sHouseNumber'] === '')
 891                                                                                                 {
 892                                                                                                         $aSearch['sHouseNumber'] = $sToken;
 893                                                                                                         // sanity check: if the housenumber is not mainly made
 894                                                                                                         // up of numbers, add a penalty
 895                                                                                                         if (preg_match_all("/[^0-9]/", $sToken, $aMatches) > 2) $aSearch['iSearchRank']++;
 896                                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 897                                                                                                         /*
 898                                                                                                         // Fall back to not searching for this item (better than nothing)
 899                                                                                                         $aSearch = $aCurrentSearch;
 900                                                                                                         $aSearch['iSearchRank'] += 1;
 901                                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 902                                                                                                          */
 903                                                                                                 }
 904                                                                                         }
 905                                                                                         elseif ($sPhraseType == '' && $aSearchTerm['class'] !== '' && $aSearchTerm['class'] !== null)
 906                                                                                         {
 907                                                                                                 if ($aSearch['sClass'] === '')
 908                                                                                                 {
 909                                                                                                         $aSearch['sOperator'] = $aSearchTerm['operator'];
 910                                                                                                         $aSearch['sClass'] = $aSearchTerm['class'];
 911                                                                                                         $aSearch['sType'] = $aSearchTerm['type'];
 912                                                                                                         if (sizeof($aSearch['aName'])) $aSearch['sOperator'] = 'name';
 913                                                                                                         else $aSearch['sOperator'] = 'near'; // near = in for the moment
 914                                                                                                         if (strlen($aSearchTerm['operator']) == 0) $aSearch['iSearchRank'] += 1;
 915
 916                                                                                                         // Do we have a shortcut id?
 917                                                                                                         if ($aSearch['sOperator'] == 'name')
 918                                                                                                         {
 919                                                                                                                 $sSQL = "select get_tagpair('".$aSearch['sClass']."', '".$aSearch['sType']."')";
 920                                                                                                                 if ($iAmenityID = $this->oDB->getOne($sSQL))
 921                                                                                                                 {
 922                                                                                                                         $aValidTokens[$aSearch['sClass'].':'.$aSearch['sType']] = array('word_id' => $iAmenityID);
 923                                                                                                                         $aSearch['aName'][$iAmenityID] = $iAmenityID;
 924                                                                                                                         $aSearch['sClass'] = '';
 925                                                                                                                         $aSearch['sType'] = '';
 926                                                                                                                 }
 927                                                                                                         }
 928                                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 929                                                                                                 }
 930                                                                                         }
 931                                                                                         elseif (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
 932                                                                                         {
 933                                                                                                 if (sizeof($aSearch['aName']))
 934                                                                                                 {
 935                                                                                                         if ((!$bStructuredPhrases || $iPhrase > 0) && $sPhraseType != 'country' && (!isset($aValidTokens[$sToken]) || strlen($sToken) < 4 || strpos($sToken, ' ') !== false))
 936                                                                                                         {
 937                                                                                                                 $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 938                                                                                                         }
 939                                                                                                         else
 940                                                                                                         {
 941                                                                                                                 $aCurrentSearch['aFullNameAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 942                                                                                                                 $aSearch['iSearchRank'] += 1000; // skip;
 943                                                                                                         }
 944                                                                                                 }
 945                                                                                                 else
 946                                                                                                 {
 947                                                                                                         $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 948                                                                                                         //$aSearch['iNamePhrase'] = $iPhrase;
 949                                                                                                 }
 950                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 951                                                                                         }
 952                                                                                 }
 953                                                                         }
 954                                                                         if (isset($aValidTokens[$sToken]))
 955                                                                         {
 956                                                                                 // Allow searching for a word - but at extra cost
 957                                                                                 foreach($aValidTokens[$sToken] as $aSearchTerm)
 958                                                                                 {
 959                                                                                         if (isset($aSearchTerm['word_id']) && $aSearchTerm['word_id'])
 960                                                                                         {
 961                                                                                                 if ((!$bStructuredPhrases || $iPhrase > 0) && sizeof($aCurrentSearch['aName']) && strlen($sToken) >= 4)
 962                                                                                                 {
 963                                                                                                         $aSearch = $aCurrentSearch;
 964                                                                                                         $aSearch['iSearchRank'] += 1;
 965                                                                                                         if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency)
 966                                                                                                         {
 967                                                                                                                 $aSearch['aAddress'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 968                                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 969                                                                                                         }
 970                                                                                                         elseif (isset($aValidTokens[' '.$sToken])) // revert to the token version?
 971                                                                                                         {
 972                                                                                                                 foreach($aValidTokens[' '.$sToken] as $aSearchTermToken)
 973                                                                                                                 {
 974                                                                                                                         if (empty($aSearchTermToken['country_code'])
 975                                                                                                                                         && empty($aSearchTermToken['lat'])
 976                                                                                                                                         && empty($aSearchTermToken['class']))
 977                                                                                                                         {
 978                                                                                                                                 $aSearch = $aCurrentSearch;
 979                                                                                                                                 $aSearch['iSearchRank'] += 1;
 980                                                                                                                                 $aSearch['aAddress'][$aSearchTermToken['word_id']] = $aSearchTermToken['word_id'];
 981                                                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 982                                                                                                                         }
 983                                                                                                                 }
 984                                                                                                         }
 985                                                                                                         else
 986                                                                                                         {
 987                                                                                                                 $aSearch['aAddressNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 988                                                                                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
 989                                                                                                         }
 990                                                                                                 }
 991
 992                                                                                                 if (!sizeof($aCurrentSearch['aName']) || $aCurrentSearch['iNamePhrase'] == $iPhrase)
 993                                                                                                 {
 994                                                                                                         $aSearch = $aCurrentSearch;
 995                                                                                                         $aSearch['iSearchRank'] += 2;
 996                                                                                                         if (preg_match('#^[0-9]+$#', $sToken)) $aSearch['iSearchRank'] += 2;
 997                                                                                                         if ($aWordFrequencyScores[$aSearchTerm['word_id']] < CONST_Max_Word_Frequency)
 998                                                                                                                 $aSearch['aName'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
 999                                                                                                         else
1000                                                                                                                 $aSearch['aNameNonSearch'][$aSearchTerm['word_id']] = $aSearchTerm['word_id'];
1001                                                                                                         $aSearch['iNamePhrase'] = $iPhrase;
1002                                                                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank) $aNewWordsetSearches[] = $aSearch;
1003                                                                                                 }
1004                                                                                         }
1005                                                                                 }
1006                                                                         }
1007                                                                         else
1008                                                                         {
1009                                                                                 // Allow skipping a word - but at EXTREAM cost
1010                                                                                 //$aSearch = $aCurrentSearch;
1011                                                                                 //$aSearch['iSearchRank']+=100;
1012                                                                                 //$aNewWordsetSearches[] = $aSearch;
1013                                                                         }
1014                                                                 }
1015                                                                 // Sort and cut
1016                                                                 usort($aNewWordsetSearches, 'bySearchRank');
1017                                                                 $aWordsetSearches = array_slice($aNewWordsetSearches, 0, 50);
1018                                                         }
1019                                                         //var_Dump('<hr>',sizeof($aWordsetSearches)); exit;
1020
1021                                                         $aNewPhraseSearches = array_merge($aNewPhraseSearches, $aNewWordsetSearches);
1022                                                         usort($aNewPhraseSearches, 'bySearchRank');
1023
1024                                                         $aSearchHash = array();
1025                                                         foreach($aNewPhraseSearches as $iSearch => $aSearch)
1026                                                         {
1027                                                                 $sHash = serialize($aSearch);
1028                                                                 if (isset($aSearchHash[$sHash])) unset($aNewPhraseSearches[$iSearch]);
1029                                                                 else $aSearchHash[$sHash] = 1;
1030                                                         }
1031
1032                                                         $aNewPhraseSearches = array_slice($aNewPhraseSearches, 0, 50);
1033                                                 }
1034
1035                                                 // Re-group the searches by their score, junk anything over 20 as just not worth trying
1036                                                 $aGroupedSearches = array();
1037                                                 foreach($aNewPhraseSearches as $aSearch)
1038                                                 {
1039                                                         if ($aSearch['iSearchRank'] < $this->iMaxRank)
1040                                                         {
1041                                                                 if (!isset($aGroupedSearches[$aSearch['iSearchRank']])) $aGroupedSearches[$aSearch['iSearchRank']] = array();
1042                                                                 $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
1043                                                         }
1044                                                 }
1045                                                 ksort($aGroupedSearches);
1046
1047                                                 $iSearchCount = 0;
1048                                                 $aSearches = array();
1049                                                 foreach($aGroupedSearches as $iScore => $aNewSearches)
1050                                                 {
1051                                                         $iSearchCount += sizeof($aNewSearches);
1052                                                         $aSearches = array_merge($aSearches, $aNewSearches);
1053                                                         if ($iSearchCount > 50) break;
1054                                                 }
1055
1056                                                 //if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
1057
1058                                         }
1059
1060                                 }
1061                                 else
1062                                 {
1063                                         // Re-group the searches by their score, junk anything over 20 as just not worth trying
1064                                         $aGroupedSearches = array();
1065                                         foreach($aSearches as $aSearch)
1066                                         {
1067                                                 if ($aSearch['iSearchRank'] < $this->iMaxRank)
1068                                                 {
1069                                                         if (!isset($aGroupedSearches[$aSearch['iSearchRank']])) $aGroupedSearches[$aSearch['iSearchRank']] = array();
1070                                                         $aGroupedSearches[$aSearch['iSearchRank']][] = $aSearch;
1071                                                 }
1072                                         }
1073                                         ksort($aGroupedSearches);
1074                                 }
1075
1076                                 if (CONST_Debug) var_Dump($aGroupedSearches);
1077
1078                                 if ($this->bReverseInPlan)
1079                                 {
1080                                         $aCopyGroupedSearches = $aGroupedSearches;
1081                                         foreach($aCopyGroupedSearches as $iGroup => $aSearches)
1082                                         {
1083                                                 foreach($aSearches as $iSearch => $aSearch)
1084                                                 {
1085                                                         if (sizeof($aSearch['aAddress']))
1086                                                         {
1087                                                                 $iReverseItem = array_pop($aSearch['aAddress']);
1088                                                                 if (isset($aPossibleMainWordIDs[$iReverseItem]))
1089                                                                 {
1090                                                                         $aSearch['aAddress'] = array_merge($aSearch['aAddress'], $aSearch['aName']);
1091                                                                         $aSearch['aName'] = array($iReverseItem);
1092                                                                         $aGroupedSearches[$iGroup][] = $aSearch;
1093                                                                 }
1094                                                                 //$aReverseSearch['aName'][$iReverseItem] = $iReverseItem;
1095                                                                 //$aGroupedSearches[$iGroup][] = $aReverseSearch;
1096                                                         }
1097                                                 }
1098                                         }
1099                                 }
1100
1101                                 if (CONST_Search_TryDroppedAddressTerms && sizeof($aStructuredQuery) > 0)
1102                                 {
1103                                         $aCopyGroupedSearches = $aGroupedSearches;
1104                                         foreach($aCopyGroupedSearches as $iGroup => $aSearches)
1105                                         {
1106                                                 foreach($aSearches as $iSearch => $aSearch)
1107                                                 {
1108                                                         $aReductionsList = array($aSearch['aAddress']);
1109                                                         $iSearchRank = $aSearch['iSearchRank'];
1110                                                         while(sizeof($aReductionsList) > 0)
1111                                                         {
1112                                                                 $iSearchRank += 5;
1113                                                                 if ($iSearchRank > iMaxRank) break 3;
1114                                                                 $aNewReductionsList = array();
1115                                                                 foreach($aReductionsList as $aReductionsWordList)
1116                                                                 {
1117                                                                         for ($iReductionWord = 0; $iReductionWord < sizeof($aReductionsWordList); $iReductionWord++)
1118                                                                         {
1119                                                                                 $aReductionsWordListResult = array_merge(array_slice($aReductionsWordList, 0, $iReductionWord), array_slice($aReductionsWordList, $iReductionWord+1));
1120                                                                                 $aReverseSearch = $aSearch;
1121                                                                                 $aSearch['aAddress'] = $aReductionsWordListResult;
1122                                                                                 $aSearch['iSearchRank'] = $iSearchRank;
1123                                                                                 $aGroupedSearches[$iSearchRank][] = $aReverseSearch;
1124                                                                                 if (sizeof($aReductionsWordListResult) > 0)
1125                                                                                 {
1126                                                                                         $aNewReductionsList[] = $aReductionsWordListResult;
1127                                                                                 }
1128                                                                         }
1129                                                                 }
1130                                                                 $aReductionsList = $aNewReductionsList;
1131                                                         }
1132                                                 }
1133                                         }
1134                                         ksort($aGroupedSearches);
1135                                 }
1136
1137                                 // Filter out duplicate searches
1138                                 $aSearchHash = array();
1139                                 foreach($aGroupedSearches as $iGroup => $aSearches)
1140                                 {
1141                                         foreach($aSearches as $iSearch => $aSearch)
1142                                         {
1143                                                 $sHash = serialize($aSearch);
1144                                                 if (isset($aSearchHash[$sHash]))
1145                                                 {
1146                                                         unset($aGroupedSearches[$iGroup][$iSearch]);
1147                                                         if (sizeof($aGroupedSearches[$iGroup]) == 0) unset($aGroupedSearches[$iGroup]);
1148                                                 }
1149                                                 else
1150                                                 {
1151                                                         $aSearchHash[$sHash] = 1;
1152                                                 }
1153                                         }
1154                                 }
1155
1156                                 if (CONST_Debug) _debugDumpGroupedSearches($aGroupedSearches, $aValidTokens);
1157
1158                                 $iGroupLoop = 0;
1159                                 $iQueryLoop = 0;
1160                                 foreach($aGroupedSearches as $iGroupedRank => $aSearches)
1161                                 {
1162                                         $iGroupLoop++;
1163                                         foreach($aSearches as $aSearch)
1164                                         {
1165                                                 $iQueryLoop++;
1166
1167                                                 if (CONST_Debug) { echo "<hr><b>Search Loop, group $iGroupLoop, loop $iQueryLoop</b>"; }
1168                                                 if (CONST_Debug) _debugDumpGroupedSearches(array($iGroupedRank => array($aSearch)), $aValidTokens);
1169
1170                                                 // No location term?
1171                                                 if (!sizeof($aSearch['aName']) && !sizeof($aSearch['aAddress']) && !$aSearch['fLon'])
1172                                                 {
1173                                                         if ($aSearch['sCountryCode'] && !$aSearch['sClass'] && !$aSearch['sHouseNumber'])
1174                                                         {
1175                                                                 // Just looking for a country by code - look it up
1176                                                                 if (4 >= $this->iMinAddressRank && 4 <= $this->iMaxAddressRank)
1177                                                                 {
1178                                                                         $sSQL = "select place_id from placex where calculated_country_code='".$aSearch['sCountryCode']."' and rank_search = 4";
1179                                                                         if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1180                                                                         $sSQL .= " order by st_area(geometry) desc limit 1";
1181                                                                         if (CONST_Debug) var_dump($sSQL);
1182                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL);
1183                                                                 }
1184                                                                 else
1185                                                                 {
1186                                                                         $aPlaceIDs = array();
1187                                                                 }
1188                                                         }
1189                                                         else
1190                                                         {
1191                                                                 if (!$bBoundingBoxSearch && !$aSearch['fLon']) continue;
1192                                                                 if (!$aSearch['sClass']) continue;
1193                                                                 $sSQL = "select count(*) from pg_tables where tablename = 'place_classtype_".$aSearch['sClass']."_".$aSearch['sType']."'";
1194                                                                 if ($this->oDB->getOne($sSQL))
1195                                                                 {
1196                                                                         $sSQL = "select place_id from place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." ct";
1197                                                                         if ($sCountryCodesSQL) $sSQL .= " join placex using (place_id)";
1198                                                                         $sSQL .= " where st_contains($this->sViewboxSmallSQL, ct.centroid)";
1199                                                                         if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1200                                                                         if (sizeof($this->aExcludePlaceIDs))
1201                                                                         {
1202                                                                                 $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1203                                                                         }
1204                                                                         if ($sViewboxCentreSQL) $sSQL .= " order by st_distance($sViewboxCentreSQL, ct.centroid) asc";
1205                                                                         $sSQL .= " limit $this->iLimit";
1206                                                                         if (CONST_Debug) var_dump($sSQL);
1207                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL);
1208
1209                                                                         // If excluded place IDs are given, it is fair to assume that
1210                                                                         // there have been results in the small box, so no further
1211                                                                         // expansion in that case.
1212                                                                         // Also don't expand if bounded results were requested.
1213                                                                         if (!sizeof($aPlaceIDs) && !sizeof($this->aExcludePlaceIDs) && !$this->bBoundedSearch)
1214                                                                         {
1215                                                                                 $sSQL = "select place_id from place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." ct";
1216                                                                                 if ($sCountryCodesSQL) $sSQL .= " join placex using (place_id)";
1217                                                                                 $sSQL .= " where st_contains($this->sViewboxLargeSQL, ct.centroid)";
1218                                                                                 if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1219                                                                                 if ($sViewboxCentreSQL) $sSQL .= " order by st_distance($sViewboxCentreSQL, ct.centroid) asc";
1220                                                                                 $sSQL .= " limit $this->iLimit";
1221                                                                                 if (CONST_Debug) var_dump($sSQL);
1222                                                                                 $aPlaceIDs = $this->oDB->getCol($sSQL);
1223                                                                         }
1224                                                                 }
1225                                                                 else
1226                                                                 {
1227                                                                         $sSQL = "select place_id from placex where class='".$aSearch['sClass']."' and type='".$aSearch['sType']."'";
1228                                                                         $sSQL .= " and st_contains($this->sViewboxSmallSQL, geometry) and linked_place_id is null";
1229                                                                         if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1230                                                                         if ($sViewboxCentreSQL) $sSQL .= " order by st_distance($sViewboxCentreSQL, centroid) asc";
1231                                                                         $sSQL .= " limit $this->iLimit";
1232                                                                         if (CONST_Debug) var_dump($sSQL);
1233                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL);
1234                                                                 }
1235                                                         }
1236                                                 }
1237                                                 else
1238                                                 {
1239                                                         $aPlaceIDs = array();
1240
1241                                                         // First we need a position, either aName or fLat or both
1242                                                         $aTerms = array();
1243                                                         $aOrder = array();
1244
1245                                                         // TODO: filter out the pointless search terms (2 letter name tokens and less)
1246                                                         // they might be right - but they are just too darned expensive to run
1247                                                         if (sizeof($aSearch['aName'])) $aTerms[] = "name_vector @> ARRAY[".join($aSearch['aName'],",")."]";
1248                                                         if (sizeof($aSearch['aNameNonSearch'])) $aTerms[] = "array_cat(name_vector,ARRAY[]::integer[]) @> ARRAY[".join($aSearch['aNameNonSearch'],",")."]";
1249                                                         if (sizeof($aSearch['aAddress']) && $aSearch['aName'] != $aSearch['aAddress'])
1250                                                         {
1251                                                                 // For infrequent name terms disable index usage for address
1252                                                                 if (CONST_Search_NameOnlySearchFrequencyThreshold &&
1253                                                                                 sizeof($aSearch['aName']) == 1 &&
1254                                                                                 $aWordFrequencyScores[$aSearch['aName'][reset($aSearch['aName'])]] < CONST_Search_NameOnlySearchFrequencyThreshold)
1255                                                                 {
1256                                                                         $aTerms[] = "array_cat(nameaddress_vector,ARRAY[]::integer[]) @> ARRAY[".join(array_merge($aSearch['aAddress'],$aSearch['aAddressNonSearch']),",")."]";
1257                                                                 }
1258                                                                 else
1259                                                                 {
1260                                                                         $aTerms[] = "nameaddress_vector @> ARRAY[".join($aSearch['aAddress'],",")."]";
1261                                                                         if (sizeof($aSearch['aAddressNonSearch'])) $aTerms[] = "array_cat(nameaddress_vector,ARRAY[]::integer[]) @> ARRAY[".join($aSearch['aAddressNonSearch'],",")."]";
1262                                                                 }
1263                                                         }
1264                                                         if ($aSearch['sCountryCode']) $aTerms[] = "country_code = '".pg_escape_string($aSearch['sCountryCode'])."'";
1265                                                         if ($aSearch['sHouseNumber'])
1266                                                         {
1267                                                                 $aTerms[] = "address_rank between 16 and 27";
1268                                                         }
1269                                                         else
1270                                                         {
1271                                                                 if ($this->iMinAddressRank > 0)
1272                                                                 {
1273                                                                         $aTerms[] = "address_rank >= ".$this->iMinAddressRank;
1274                                                                 }
1275                                                                 if ($this->iMaxAddressRank < 30)
1276                                                                 {
1277                                                                         $aTerms[] = "address_rank <= ".$this->iMaxAddressRank;
1278                                                                 }
1279                                                         }
1280                                                         if ($aSearch['fLon'] && $aSearch['fLat'])
1281                                                         {
1282                                                                 $aTerms[] = "ST_DWithin(centroid, ST_SetSRID(ST_Point(".$aSearch['fLon'].",".$aSearch['fLat']."),4326), ".$aSearch['fRadius'].")";
1283                                                                 $aOrder[] = "ST_Distance(centroid, ST_SetSRID(ST_Point(".$aSearch['fLon'].",".$aSearch['fLat']."),4326)) ASC";
1284                                                         }
1285                                                         if (sizeof($this->aExcludePlaceIDs))
1286                                                         {
1287                                                                 $aTerms[] = "place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1288                                                         }
1289                                                         if ($sCountryCodesSQL)
1290                                                         {
1291                                                                 $aTerms[] = "country_code in ($sCountryCodesSQL)";
1292                                                         }
1293
1294                                                         if ($bBoundingBoxSearch) $aTerms[] = "centroid && $this->sViewboxSmallSQL";
1295                                                         if ($sNearPointSQL) $aOrder[] = "ST_Distance($sNearPointSQL, centroid) asc";
1296
1297                                                         if ($aSearch['sHouseNumber'])
1298                                                         {
1299                                                                 $sImportanceSQL = '- abs(26 - address_rank) + 3';
1300                                                         }
1301                                                         else
1302                                                         {
1303                                                                 $sImportanceSQL = '(case when importance = 0 OR importance IS NULL then 0.75-(search_rank::float/40) else importance end)';
1304                                                         }
1305                                                         if ($this->sViewboxSmallSQL) $sImportanceSQL .= " * case when ST_Contains($this->sViewboxSmallSQL, centroid) THEN 1 ELSE 0.5 END";
1306                                                         if ($this->sViewboxLargeSQL) $sImportanceSQL .= " * case when ST_Contains($this->sViewboxLargeSQL, centroid) THEN 1 ELSE 0.5 END";
1307
1308                                                         $aOrder[] = "$sImportanceSQL DESC";
1309                                                         if (sizeof($aSearch['aFullNameAddress']))
1310                                                         {
1311                                                                 $sExactMatchSQL = '(select count(*) from (select unnest(ARRAY['.join($aSearch['aFullNameAddress'],",").']) INTERSECT select unnest(nameaddress_vector))s) as exactmatch';
1312                                                                 $aOrder[] = 'exactmatch DESC';
1313                                                         } else {
1314                                                                 $sExactMatchSQL = '0::int as exactmatch';
1315                                                         }
1316
1317                                                         if (sizeof($aTerms))
1318                                                         {
1319                                                                 $sSQL = "select place_id, ";
1320                                                                 $sSQL .= $sExactMatchSQL;
1321                                                                 $sSQL .= " from search_name";
1322                                                                 $sSQL .= " where ".join(' and ',$aTerms);
1323                                                                 $sSQL .= " order by ".join(', ',$aOrder);
1324                                                                 if ($aSearch['sHouseNumber'] || $aSearch['sClass'])
1325                                                                         $sSQL .= " limit 50";
1326                                                                 elseif (!sizeof($aSearch['aName']) && !sizeof($aSearch['aAddress']) && $aSearch['sClass'])
1327                                                                         $sSQL .= " limit 1";
1328                                                                 else
1329                                                                         $sSQL .= " limit ".$this->iLimit;
1330
1331                                                                 if (CONST_Debug) { var_dump($sSQL); }
1332                                                                 $aViewBoxPlaceIDs = $this->oDB->getAll($sSQL);
1333                                                                 if (PEAR::IsError($aViewBoxPlaceIDs))
1334                                                                 {
1335                                                                         failInternalError("Could not get places for search terms.", $sSQL, $aViewBoxPlaceIDs);
1336                                                                 }
1337                                                                 //var_dump($aViewBoxPlaceIDs);
1338                                                                 // Did we have an viewbox matches?
1339                                                                 $aPlaceIDs = array();
1340                                                                 $bViewBoxMatch = false;
1341                                                                 foreach($aViewBoxPlaceIDs as $aViewBoxRow)
1342                                                                 {
1343                                                                         //if ($bViewBoxMatch == 1 && $aViewBoxRow['in_small'] == 'f') break;
1344                                                                         //if ($bViewBoxMatch == 2 && $aViewBoxRow['in_large'] == 'f') break;
1345                                                                         //if ($aViewBoxRow['in_small'] == 't') $bViewBoxMatch = 1;
1346                                                                         //else if ($aViewBoxRow['in_large'] == 't') $bViewBoxMatch = 2;
1347                                                                         $aPlaceIDs[] = $aViewBoxRow['place_id'];
1348                                                                         $this->exactMatchCache[$aViewBoxRow['place_id']] = $aViewBoxRow['exactmatch'];
1349                                                                 }
1350                                                         }
1351                                                         //var_Dump($aPlaceIDs);
1352                                                         //exit;
1353
1354                                                         if ($aSearch['sHouseNumber'] && sizeof($aPlaceIDs))
1355                                                         {
1356                                                                 $aRoadPlaceIDs = $aPlaceIDs;
1357                                                                 $sPlaceIDs = join(',',$aPlaceIDs);
1358
1359                                                                 // Now they are indexed look for a house attached to a street we found
1360                                                                 $sHouseNumberRegex = '\\\\m'.$aSearch['sHouseNumber'].'\\\\M';
1361                                                                 $sSQL = "select place_id from placex where parent_place_id in (".$sPlaceIDs.") and transliteration(housenumber) ~* E'".$sHouseNumberRegex."'";
1362                                                                 if (sizeof($this->aExcludePlaceIDs))
1363                                                                 {
1364                                                                         $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1365                                                                 }
1366                                                                 $sSQL .= " limit $this->iLimit";
1367                                                                 if (CONST_Debug) var_dump($sSQL);
1368                                                                 $aPlaceIDs = $this->oDB->getCol($sSQL);
1369
1370                                                                 // If not try the aux fallback table
1371                                                                 if (!sizeof($aPlaceIDs))
1372                                                                 {
1373                                                                         $sSQL = "select place_id from location_property_aux where parent_place_id in (".$sPlaceIDs.") and housenumber = '".pg_escape_string($aSearch['sHouseNumber'])."'";
1374                                                                         if (sizeof($this->aExcludePlaceIDs))
1375                                                                         {
1376                                                                                 $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1377                                                                         }
1378                                                                         //$sSQL .= " limit $this->iLimit";
1379                                                                         if (CONST_Debug) var_dump($sSQL);
1380                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL);
1381                                                                 }
1382
1383                                                                 if (!sizeof($aPlaceIDs))
1384                                                                 {
1385                                                                         $sSQL = "select place_id from location_property_tiger where parent_place_id in (".$sPlaceIDs.") and housenumber = '".pg_escape_string($aSearch['sHouseNumber'])."'";
1386                                                                         if (sizeof($this->aExcludePlaceIDs))
1387                                                                         {
1388                                                                                 $sSQL .= " and place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1389                                                                         }
1390                                                                         //$sSQL .= " limit $this->iLimit";
1391                                                                         if (CONST_Debug) var_dump($sSQL);
1392                                                                         $aPlaceIDs = $this->oDB->getCol($sSQL);
1393                                                                 }
1394
1395                                                                 // Fallback to the road
1396                                                                 if (!sizeof($aPlaceIDs) && preg_match('/[0-9]+/', $aSearch['sHouseNumber']))
1397                                                                 {
1398                                                                         $aPlaceIDs = $aRoadPlaceIDs;
1399                                                                 }
1400
1401                                                         }
1402
1403                                                         if ($aSearch['sClass'] && sizeof($aPlaceIDs))
1404                                                         {
1405                                                                 $sPlaceIDs = join(',',$aPlaceIDs);
1406                                                                 $aClassPlaceIDs = array();
1407
1408                                                                 if (!$aSearch['sOperator'] || $aSearch['sOperator'] == 'name')
1409                                                                 {
1410                                                                         // If they were searching for a named class (i.e. 'Kings Head pub') then we might have an extra match
1411                                                                         $sSQL = "select place_id from placex where place_id in ($sPlaceIDs) and class='".$aSearch['sClass']."' and type='".$aSearch['sType']."'";
1412                                                                         $sSQL .= " and linked_place_id is null";
1413                                                                         if ($sCountryCodesSQL) $sSQL .= " and calculated_country_code in ($sCountryCodesSQL)";
1414                                                                         $sSQL .= " order by rank_search asc limit $this->iLimit";
1415                                                                         if (CONST_Debug) var_dump($sSQL);
1416                                                                         $aClassPlaceIDs = $this->oDB->getCol($sSQL);
1417                                                                 }
1418
1419                                                                 if (!$aSearch['sOperator'] || $aSearch['sOperator'] == 'near') // & in
1420                                                                 {
1421                                                                         $sSQL = "select count(*) from pg_tables where tablename = 'place_classtype_".$aSearch['sClass']."_".$aSearch['sType']."'";
1422                                                                         $bCacheTable = $this->oDB->getOne($sSQL);
1423
1424                                                                         $sSQL = "select min(rank_search) from placex where place_id in ($sPlaceIDs)";
1425
1426                                                                         if (CONST_Debug) var_dump($sSQL);
1427                                                                         $this->iMaxRank = ((int)$this->oDB->getOne($sSQL));
1428
1429                                                                         // For state / country level searches the normal radius search doesn't work very well
1430                                                                         $sPlaceGeom = false;
1431                                                                         if ($this->iMaxRank < 9 && $bCacheTable)
1432                                                                         {
1433                                                                                 // Try and get a polygon to search in instead
1434                                                                                 $sSQL = "select geometry from placex where place_id in ($sPlaceIDs) and rank_search < $this->iMaxRank + 5 and st_geometrytype(geometry) in ('ST_Polygon','ST_MultiPolygon') order by rank_search asc limit 1";
1435                                                                                 if (CONST_Debug) var_dump($sSQL);
1436                                                                                 $sPlaceGeom = $this->oDB->getOne($sSQL);
1437                                                                         }
1438
1439                                                                         if ($sPlaceGeom)
1440                                                                         {
1441                                                                                 $sPlaceIDs = false;
1442                                                                         }
1443                                                                         else
1444                                                                         {
1445                                                                                 $this->iMaxRank += 5;
1446                                                                                 $sSQL = "select place_id from placex where place_id in ($sPlaceIDs) and rank_search < $this->iMaxRank";
1447                                                                                 if (CONST_Debug) var_dump($sSQL);
1448                                                                                 $aPlaceIDs = $this->oDB->getCol($sSQL);
1449                                                                                 $sPlaceIDs = join(',',$aPlaceIDs);
1450                                                                         }
1451
1452                                                                         if ($sPlaceIDs || $sPlaceGeom)
1453                                                                         {
1454
1455                                                                                 $fRange = 0.01;
1456                                                                                 if ($bCacheTable)
1457                                                                                 {
1458                                                                                         // More efficient - can make the range bigger
1459                                                                                         $fRange = 0.05;
1460
1461                                                                                         $sOrderBySQL = '';
1462                                                                                         if ($sNearPointSQL) $sOrderBySQL = "ST_Distance($sNearPointSQL, l.centroid)";
1463                                                                                         else if ($sPlaceIDs) $sOrderBySQL = "ST_Distance(l.centroid, f.geometry)";
1464                                                                                         else if ($sPlaceGeom) $sOrderBysSQL = "ST_Distance(st_centroid('".$sPlaceGeom."'), l.centroid)";
1465
1466                                                                                         $sSQL = "select distinct l.place_id".($sOrderBySQL?','.$sOrderBySQL:'')." from place_classtype_".$aSearch['sClass']."_".$aSearch['sType']." as l";
1467                                                                                         if ($sCountryCodesSQL) $sSQL .= " join placex as lp using (place_id)";
1468                                                                                         if ($sPlaceIDs)
1469                                                                                         {
1470                                                                                                 $sSQL .= ",placex as f where ";
1471                                                                                                 $sSQL .= "f.place_id in ($sPlaceIDs) and ST_DWithin(l.centroid, f.centroid, $fRange) ";
1472                                                                                         }
1473                                                                                         if ($sPlaceGeom)
1474                                                                                         {
1475                                                                                                 $sSQL .= " where ";
1476                                                                                                 $sSQL .= "ST_Contains('".$sPlaceGeom."', l.centroid) ";
1477                                                                                         }
1478                                                                                         if (sizeof($this->aExcludePlaceIDs))
1479                                                                                         {
1480                                                                                                 $sSQL .= " and l.place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1481                                                                                         }
1482                                                                                         if ($sCountryCodesSQL) $sSQL .= " and lp.calculated_country_code in ($sCountryCodesSQL)";
1483                                                                                         if ($sOrderBySQL) $sSQL .= "order by ".$sOrderBySQL." asc";
1484                                                                                         if ($this->iOffset) $sSQL .= " offset $this->iOffset";
1485                                                                                         $sSQL .= " limit $this->iLimit";
1486                                                                                         if (CONST_Debug) var_dump($sSQL);
1487                                                                                         $aClassPlaceIDs = array_merge($aClassPlaceIDs, $this->oDB->getCol($sSQL));
1488                                                                                 }
1489                                                                                 else
1490                                                                                 {
1491                                                                                         if (isset($aSearch['fRadius']) && $aSearch['fRadius']) $fRange = $aSearch['fRadius'];
1492
1493                                                                                         $sOrderBySQL = '';
1494                                                                                         if ($sNearPointSQL) $sOrderBySQL = "ST_Distance($sNearPointSQL, l.geometry)";
1495                                                                                         else $sOrderBySQL = "ST_Distance(l.geometry, f.geometry)";
1496
1497                                                                                         $sSQL = "select distinct l.place_id".($sOrderBysSQL?','.$sOrderBysSQL:'')." from placex as l,placex as f where ";
1498                                                                                         $sSQL .= "f.place_id in ( $sPlaceIDs) and ST_DWithin(l.geometry, f.centroid, $fRange) ";
1499                                                                                         $sSQL .= "and l.class='".$aSearch['sClass']."' and l.type='".$aSearch['sType']."' ";
1500                                                                                         if (sizeof($this->aExcludePlaceIDs))
1501                                                                                         {
1502                                                                                                 $sSQL .= " and l.place_id not in (".join(',',$this->aExcludePlaceIDs).")";
1503                                                                                         }
1504                                                                                         if ($sCountryCodesSQL) $sSQL .= " and l.calculated_country_code in ($sCountryCodesSQL)";
1505                                                                                         if ($sOrderBy) $sSQL .= "order by ".$OrderBysSQL." asc";
1506                                                                                         if ($this->iOffset) $sSQL .= " offset $this->iOffset";
1507                                                                                         $sSQL .= " limit $this->iLimit";
1508                                                                                         if (CONST_Debug) var_dump($sSQL);
1509                                                                                         $aClassPlaceIDs = array_merge($aClassPlaceIDs, $this->oDB->getCol($sSQL));
1510                                                                                 }
1511                                                                         }
1512                                                                 }
1513
1514                                                                 $aPlaceIDs = $aClassPlaceIDs;
1515
1516                                                         }
1517
1518                                                 }
1519
1520                                                 if (PEAR::IsError($aPlaceIDs))
1521                                                 {
1522                                                         failInternalError("Could not get place IDs from tokens." ,$sSQL, $aPlaceIDs);
1523                                                 }
1524
1525                                                 if (CONST_Debug) { echo "<br><b>Place IDs:</b> "; var_Dump($aPlaceIDs); }
1526
1527                                                 foreach($aPlaceIDs as $iPlaceID)
1528                                                 {
1529                                                         $aResultPlaceIDs[$iPlaceID] = $iPlaceID;
1530                                                 }
1531                                                 if ($iQueryLoop > 20) break;
1532                                         }
1533
1534                                         if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs) && ($this->iMinAddressRank != 0 || $this->iMaxAddressRank != 30))
1535                                         {
1536                                                 // Need to verify passes rank limits before dropping out of the loop (yuk!)
1537                                                 $sSQL = "select place_id from placex where place_id in (".join(',',$aResultPlaceIDs).") ";
1538                                                 $sSQL .= "and (placex.rank_address between $this->iMinAddressRank and $this->iMaxAddressRank ";
1539                                                 if (14 >= $this->iMinAddressRank && 14 <= $this->iMaxAddressRank) $sSQL .= " OR (extratags->'place') = 'city'";
1540                                                 if ($this->aAddressRankList) $sSQL .= " OR placex.rank_address in (".join(',',$this->aAddressRankList).")";
1541                                                 $sSQL .= ") UNION select place_id from location_property_tiger where place_id in (".join(',',$aResultPlaceIDs).") ";
1542                                                 $sSQL .= "and (30 between $this->iMinAddressRank and $this->iMaxAddressRank ";
1543                                                 if ($this->aAddressRankList) $sSQL .= " OR 30 in (".join(',',$this->aAddressRankList).")";
1544                                                 $sSQL .= ")";
1545                                                 if (CONST_Debug) var_dump($sSQL);
1546                                                 $aResultPlaceIDs = $this->oDB->getCol($sSQL);
1547                                         }
1548
1549                                         //exit;
1550                                         if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs)) break;
1551                                         if ($iGroupLoop > 4) break;
1552                                         if ($iQueryLoop > 30) break;
1553                                 }
1554
1555                                 // Did we find anything?
1556                                 if (isset($aResultPlaceIDs) && sizeof($aResultPlaceIDs))
1557                                 {
1558                                         $aSearchResults = $this->getDetails($aResultPlaceIDs);
1559                                 }
1560
1561                         }
1562                         else
1563                         {
1564                                 // Just interpret as a reverse geocode
1565                                 $iPlaceID = geocodeReverse((float)$this->aNearPoint[0], (float)$this->aNearPoint[1]);
1566                                 if ($iPlaceID)
1567                                         $aSearchResults = $this->getDetails(array($iPlaceID));
1568                                 else
1569                                         $aSearchResults = array();
1570                         }
1571
1572                         // No results? Done
1573                         if (!sizeof($aSearchResults))
1574                         {
1575                                 if ($this->bFallback)
1576                                 {
1577                                         if ($this->fallbackStructuredQuery())
1578                                         {
1579                                                 return $this->lookup();
1580                                         }
1581                                 }
1582
1583                                 return array();
1584                         }
1585
1586                         $aClassType = getClassTypesWithImportance();
1587                         $aRecheckWords = preg_split('/\b[\s,\\-]*/u',$sQuery);
1588                         foreach($aRecheckWords as $i => $sWord)
1589                         {
1590                                 if (!$sWord) unset($aRecheckWords[$i]);
1591                         }
1592
1593                         foreach($aSearchResults as $iResNum => $aResult)
1594                         {
1595                                 if (CONST_Search_AreaPolygons)
1596                                 {
1597                                         // Get the bounding box and outline polygon
1598                                         $sSQL = "select place_id,0 as numfeatures,st_area(geometry) as area,";
1599                                         $sSQL .= "ST_Y(centroid) as centrelat,ST_X(centroid) as centrelon,";
1600                                         $sSQL .= "ST_Y(ST_PointN(ST_ExteriorRing(Box2D(geometry)),4)) as minlat,ST_Y(ST_PointN(ST_ExteriorRing(Box2D(geometry)),2)) as maxlat,";
1601                                         $sSQL .= "ST_X(ST_PointN(ST_ExteriorRing(Box2D(geometry)),1)) as minlon,ST_X(ST_PointN(ST_ExteriorRing(Box2D(geometry)),3)) as maxlon";
1602                                         if ($this->bIncludePolygonAsGeoJSON) $sSQL .= ",ST_AsGeoJSON(geometry) as asgeojson";
1603                                         if ($this->bIncludePolygonAsKML) $sSQL .= ",ST_AsKML(geometry) as askml";
1604                                         if ($this->bIncludePolygonAsSVG) $sSQL .= ",ST_AsSVG(geometry) as assvg";
1605                                         if ($this->bIncludePolygonAsText || $this->bIncludePolygonAsPoints) $sSQL .= ",ST_AsText(geometry) as astext";
1606                                         $sSQL .= " from placex where place_id = ".$aResult['place_id'].' and st_geometrytype(Box2D(geometry)) = \'ST_Polygon\'';
1607                                         $aPointPolygon = $this->oDB->getRow($sSQL);
1608                                         if (PEAR::IsError($aPointPolygon))
1609                                         {
1610                                                 failInternalError("Could not get outline.", $sSQL, $aPointPolygon);
1611                                         }
1612
1613                                         if ($aPointPolygon['place_id'])
1614                                         {
1615                                                 if ($this->bIncludePolygonAsGeoJSON) $aResult['asgeojson'] = $aPointPolygon['asgeojson'];
1616                                                 if ($this->bIncludePolygonAsKML) $aResult['askml'] = $aPointPolygon['askml'];
1617                                                 if ($this->bIncludePolygonAsSVG) $aResult['assvg'] = $aPointPolygon['assvg'];
1618                                                 if ($this->bIncludePolygonAsText) $aResult['astext'] = $aPointPolygon['astext'];
1619
1620                                                 if ($aPointPolygon['centrelon'] !== null && $aPointPolygon['centrelat'] !== null )
1621                                                 {
1622                                                         $aResult['lat'] = $aPointPolygon['centrelat'];
1623                                                         $aResult['lon'] = $aPointPolygon['centrelon'];
1624                                                 }
1625
1626                                                 if ($this->bIncludePolygonAsPoints)
1627                                                 {
1628                                                         // Translate geometary string to point array
1629                                                         if (preg_match('#POLYGON\\(\\(([- 0-9.,]+)#',$aPointPolygon['astext'],$aMatch))
1630                                                         {
1631                                                                 preg_match_all('/(-?[0-9.]+) (-?[0-9.]+)/',$aMatch[1],$aPolyPoints,PREG_SET_ORDER);
1632                                                         }
1633                                                         elseif (preg_match('#MULTIPOLYGON\\(\\(\\(([- 0-9.,]+)#',$aPointPolygon['astext'],$aMatch))
1634                                                         {
1635                                                                 preg_match_all('/(-?[0-9.]+) (-?[0-9.]+)/',$aMatch[1],$aPolyPoints,PREG_SET_ORDER);
1636                                                         }
1637                                                         elseif (preg_match('#POINT\\((-?[0-9.]+) (-?[0-9.]+)\\)#',$aPointPolygon['astext'],$aMatch))
1638                                                         {
1639                                                                 $fRadius = 0.01;
1640                                                                 $iSteps = ($fRadius * 40000)^2;
1641                                                                 $fStepSize = (2*pi())/$iSteps;
1642                                                                 $aPolyPoints = array();
1643                                                                 for($f = 0; $f < 2*pi(); $f += $fStepSize)
1644                                                                 {
1645                                                                         $aPolyPoints[] = array('',$aMatch[1]+($fRadius*sin($f)),$aMatch[2]+($fRadius*cos($f)));
1646                                                                 }
1647                                                                 $aPointPolygon['minlat'] = $aPointPolygon['minlat'] - $fRadius;
1648                                                                 $aPointPolygon['maxlat'] = $aPointPolygon['maxlat'] + $fRadius;
1649                                                                 $aPointPolygon['minlon'] = $aPointPolygon['minlon'] - $fRadius;
1650                                                                 $aPointPolygon['maxlon'] = $aPointPolygon['maxlon'] + $fRadius;
1651                                                         }
1652                                                 }
1653
1654                                                 // Output data suitable for display (points and a bounding box)
1655                                                 if ($this->bIncludePolygonAsPoints && isset($aPolyPoints))
1656                                                 {
1657                                                         $aResult['aPolyPoints'] = array();
1658                                                         foreach($aPolyPoints as $aPoint)
1659                                                         {
1660                                                                 $aResult['aPolyPoints'][] = array($aPoint[1], $aPoint[2]);
1661                                                         }
1662                                                 }
1663                                                 $aResult['aBoundingBox'] = array($aPointPolygon['minlat'],$aPointPolygon['maxlat'],$aPointPolygon['minlon'],$aPointPolygon['maxlon']);
1664                                         }
1665                                 }
1666
1667                                 if ($aResult['extra_place'] == 'city')
1668                                 {
1669                                         $aResult['class'] = 'place';
1670                                         $aResult['type'] = 'city';
1671                                         $aResult['rank_search'] = 16;
1672                                 }
1673
1674                                 if (!isset($aResult['aBoundingBox']))
1675                                 {
1676                                         // Default
1677                                         $fDiameter = 0.0001;
1678
1679                                         if (isset($aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['defdiameter'])
1680                                                         && $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['defdiameter'])
1681                                         {
1682                                                 $fDiameter = $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['defzoom'];
1683                                         }
1684                                         elseif (isset($aClassType[$aResult['class'].':'.$aResult['type']]['defdiameter'])
1685                                                         && $aClassType[$aResult['class'].':'.$aResult['type']]['defdiameter'])
1686                                         {
1687                                                 $fDiameter = $aClassType[$aResult['class'].':'.$aResult['type']]['defdiameter'];
1688                                         }
1689                                         $fRadius = $fDiameter / 2;
1690
1691                                         $iSteps = max(8,min(100,$fRadius * 3.14 * 100000));
1692                                         $fStepSize = (2*pi())/$iSteps;
1693                                         $aPolyPoints = array();
1694                                         for($f = 0; $f < 2*pi(); $f += $fStepSize)
1695                                         {
1696                                                 $aPolyPoints[] = array('',$aResult['lon']+($fRadius*sin($f)),$aResult['lat']+($fRadius*cos($f)));
1697                                         }
1698                                         $aPointPolygon['minlat'] = $aResult['lat'] - $fRadius;
1699                                         $aPointPolygon['maxlat'] = $aResult['lat'] + $fRadius;
1700                                         $aPointPolygon['minlon'] = $aResult['lon'] - $fRadius;
1701                                         $aPointPolygon['maxlon'] = $aResult['lon'] + $fRadius;
1702
1703                                         // Output data suitable for display (points and a bounding box)
1704                                         if ($this->bIncludePolygonAsPoints)
1705                                         {
1706                                                 $aResult['aPolyPoints'] = array();
1707                                                 foreach($aPolyPoints as $aPoint)
1708                                                 {
1709                                                         $aResult['aPolyPoints'][] = array($aPoint[1], $aPoint[2]);
1710                                                 }
1711                                         }
1712                                         $aResult['aBoundingBox'] = array((string)$aPointPolygon['minlat'],(string)$aPointPolygon['maxlat'],(string)$aPointPolygon['minlon'],(string)$aPointPolygon['maxlon']);
1713                                 }
1714
1715                                 // Is there an icon set for this type of result?
1716                                 if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['icon'])
1717                                                 && $aClassType[$aResult['class'].':'.$aResult['type']]['icon'])
1718                                 {
1719                                         $aResult['icon'] = CONST_Website_BaseURL.'images/mapicons/'.$aClassType[$aResult['class'].':'.$aResult['type']]['icon'].'.p.20.png';
1720                                 }
1721
1722                                 if (isset($aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'])
1723                                                 && $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'])
1724                                 {
1725                                         $aResult['label'] = $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['label'];
1726                                 }
1727                                 elseif (isset($aClassType[$aResult['class'].':'.$aResult['type']]['label'])
1728                                                 && $aClassType[$aResult['class'].':'.$aResult['type']]['label'])
1729                                 {
1730                                         $aResult['label'] = $aClassType[$aResult['class'].':'.$aResult['type']]['label'];
1731                                 }
1732
1733                                 if ($this->bIncludeAddressDetails)
1734                                 {
1735                                         $aResult['address'] = getAddressDetails($this->oDB, $sLanguagePrefArraySQL, $aResult['place_id'], $aResult['country_code']);
1736                                         if ($aResult['extra_place'] == 'city' && !isset($aResult['address']['city']))
1737                                         {
1738                                                 $aResult['address'] = array_merge(array('city' => array_shift(array_values($aResult['address']))), $aResult['address']);
1739                                         }
1740                                 }
1741
1742                                 // Adjust importance for the number of exact string matches in the result
1743                                 $aResult['importance'] = max(0.001,$aResult['importance']);
1744                                 $iCountWords = 0;
1745                                 $sAddress = $aResult['langaddress'];
1746                                 foreach($aRecheckWords as $i => $sWord)
1747                                 {
1748                                         if (stripos($sAddress, $sWord)!==false)
1749                                         {
1750                                                 $iCountWords++;
1751                                                 if (preg_match("/(^|,)\s*$sWord\s*(,|$)/", $sAddress)) $iCountWords += 0.1;
1752                                         }
1753                                 }
1754
1755                                 $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
1756
1757                                 $aResult['name'] = $aResult['langaddress'];
1758                                 // secondary ordering (for results with same importance (the smaller the better):
1759                                 //   - approximate importance of address parts
1760                                 $aResult['foundorder'] = -$aResult['addressimportance']/10;
1761                                 //   - number of exact matches from the query
1762                                 if (isset($this->exactMatchCache[$aResult['place_id']]))
1763                                         $aResult['foundorder'] -= $this->exactMatchCache[$aResult['place_id']];
1764                                 else if (isset($this->exactMatchCache[$aResult['parent_place_id']]))
1765                                         $aResult['foundorder'] -= $this->exactMatchCache[$aResult['parent_place_id']];
1766                                 //  - importance of the class/type
1767                                 if (isset($aClassType[$aResult['class'].':'.$aResult['type']]['importance'])
1768                                         && $aClassType[$aResult['class'].':'.$aResult['type']]['importance'])
1769                                 {
1770                                         $aResult['foundorder'] = $aResult['foundorder'] + 0.000001 * $aClassType[$aResult['class'].':'.$aResult['type']]['importance'];
1771                                 }
1772                                 else
1773                                 {
1774                                         $aResult['foundorder'] = $aResult['foundorder'] + 0.001;
1775                                 }
1776                                 $aSearchResults[$iResNum] = $aResult;
1777                         }
1778                         uasort($aSearchResults, 'byImportance');
1779
1780                         $aOSMIDDone = array();
1781                         $aClassTypeNameDone = array();
1782                         $aToFilter = $aSearchResults;
1783                         $aSearchResults = array();
1784
1785                         $bFirst = true;
1786                         foreach($aToFilter as $iResNum => $aResult)
1787                         {
1788                                 if ($aResult['type'] == 'adminitrative') $aResult['type'] = 'administrative';
1789                                 $this->aExcludePlaceIDs[$aResult['place_id']] = $aResult['place_id'];
1790                                 if ($bFirst)
1791                                 {
1792                                         $fLat = $aResult['lat'];
1793                                         $fLon = $aResult['lon'];
1794                                         if (isset($aResult['zoom'])) $iZoom = $aResult['zoom'];
1795                                         $bFirst = false;
1796                                 }
1797                                 if (!$this->bDeDupe || (!isset($aOSMIDDone[$aResult['osm_type'].$aResult['osm_id']])
1798                                                         && !isset($aClassTypeNameDone[$aResult['osm_type'].$aResult['class'].$aResult['type'].$aResult['name'].$aResult['admin_level']])))
1799                                 {
1800                                         $aOSMIDDone[$aResult['osm_type'].$aResult['osm_id']] = true;
1801                                         $aClassTypeNameDone[$aResult['osm_type'].$aResult['class'].$aResult['type'].$aResult['name'].$aResult['admin_level']] = true;
1802                                         $aSearchResults[] = $aResult;
1803                                 }
1804
1805                                 // Absolute limit on number of results
1806                                 if (sizeof($aSearchResults) >= $this->iFinalLimit) break;
1807                         }
1808
1809                         return $aSearchResults;
1810
1811                 } // end lookup()
1812
1813
1814         } // end class
1815