website/reverse.php

   1 <?php
   2         @define('CONST_ConnectionBucket_PageType', 'Reverse');
   3
   4         require_once(dirname(dirname(__FILE__)).'/lib/init-website.php');
   5         require_once(CONST_BasePath.'/lib/log.php');
   6
   7         $oDB =& getDB();
   8         ini_set('memory_limit', '200M');
   9
  10         // Format for output
  11         $sOutputFormat = 'xml';
  12         if (isset($_GET['format']) && ($_GET['format'] == 'xml' || $_GET['format'] == 'json' || $_GET['format'] == 'jsonv2'))
  13         {
  14                 $sOutputFormat = $_GET['format'];
  15         }
  16
  17         // Show address breakdown
  18         $bShowAddressDetails = true;
  19         if (isset($_GET['addressdetails'])) $bShowAddressDetails = (bool)$_GET['addressdetails'];
  20
  21         // Preferred language
  22         $aLangPrefOrder = getPreferredLanguages();
  23         $sLanguagePrefArraySQL = "ARRAY[".join(',',array_map("getDBQuoted",$aLangPrefOrder))."]";
  24
  25         $hLog = logStart($oDB, 'reverse', $_SERVER['QUERY_STRING'], $aLangPrefOrder);
  26
  27         if (isset($_GET['osm_type']) && isset($_GET['osm_id']) && (int)$_GET['osm_id'] && ($_GET['osm_type'] == 'N' || $_GET['osm_type'] == 'W' || $_GET['osm_type'] == 'R'))
  28         {
  29                 $iPlaceID = $oDB->getOne($sSQL = ("select place_id from placex where osm_type = '".$_GET['osm_type']."' and osm_id = ".(int)$_GET['osm_id']." order by type = 'postcode' asc"));
  30                 if (CONST_Debug) var_dump($sSQL);
  31                 if (!$iPlaceID) $sError = 'OSM ID Not Found';
  32         }
  33         else
  34         {
  35                 // Location to look up
  36                 $fLat = (float)$_GET['lat'];
  37                 $fLon = (float)$_GET['lon'];
  38                 $sPointSQL = "ST_SetSRID(ST_Point($fLon,$fLat),4326)";
  39
  40                 // Zoom to rank, this could probably be calculated but a lookup gives fine control
  41                 $aZoomRank = array(
  42                                 0 => 2, // Continent / Sea
  43                                 1 => 2,
  44                                 2 => 2,
  45                                 3 => 4, // Country
  46                                 4 => 4,
  47                                 5 => 8, // State
  48                                 6 => 10, // Region
  49                                 7 => 10,
  50                                 8 => 12, // County
  51                                 9 => 12,
  52                                 10 => 17, // City
  53                                 11 => 17,
  54                                 12 => 18, // Town / Village
  55                                 13 => 18,
  56                                 14 => 22, // Suburb
  57                                 15 => 22,
  58                                 16 => 26, // Street, TODO: major street?
  59                                 17 => 26,
  60                                 18 => 30, // or >, Building
  61                                 19 => 30, // or >, Building
  62                                 );
  63                 $iMaxRank = (isset($_GET['zoom']) && isset($aZoomRank[$_GET['zoom']]))?$aZoomRank[$_GET['zoom']]:28;
  64
  65                 // Find the nearest point
  66                 $fSearchDiam = 0.0004;
  67                 $iPlaceID = null;
  68                 $aArea = false;
  69                 $fMaxAreaDistance = 1;
  70                 while(!$iPlaceID && $fSearchDiam < $fMaxAreaDistance)
  71                 {
  72                         $fSearchDiam = $fSearchDiam * 2;
  73
  74                         // If we have to expand the search area by a large amount then we need a larger feature
  75                         // then there is a limit to how small the feature should be
  76                         if ($fSearchDiam > 2 && $iMaxRank > 4) $iMaxRank = 4;
  77                         if ($fSearchDiam > 1 && $iMaxRank > 9) $iMaxRank = 8;
  78                         if ($fSearchDiam > 0.8 && $iMaxRank > 10) $iMaxRank = 10;
  79                         if ($fSearchDiam > 0.6 && $iMaxRank > 12) $iMaxRank = 12;
  80                         if ($fSearchDiam > 0.2 && $iMaxRank > 17) $iMaxRank = 17;
  81                         if ($fSearchDiam > 0.1 && $iMaxRank > 18) $iMaxRank = 18;
  82                         if ($fSearchDiam > 0.008 && $iMaxRank > 22) $iMaxRank = 22;
  83                         if ($fSearchDiam > 0.001 && $iMaxRank > 26) $iMaxRank = 26;
  84
  85                         $sSQL = 'select place_id,parent_place_id,rank_search from placex';
  86                         $sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
  87                         $sSQL .= ' and rank_search != 28 and rank_search >= '.$iMaxRank;
  88                         $sSQL .= ' and (name is not null or housenumber is not null)';
  89                         $sSQL .= ' and class not in (\'waterway\',\'railway\',\'tunnel\',\'bridge\')';
  90                         $sSQL .= ' and (ST_GeometryType(geometry) not in (\'ST_Polygon\',\'ST_MultiPolygon\') ';
  91                         $sSQL .= ' OR ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.'))';
  92                         $sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', geometry) ASC limit 1';
  93                         if (CONST_Debug) var_dump($sSQL);
  94                         $aPlace = $oDB->getRow($sSQL);
  95                         if (PEAR::IsError($aPlace))
  96                         {
  97                                 failInternalError("Could not determine closest place.", $sSQL, $iPlaceID);
  98                         }
  99                         $iPlaceID = $aPlace['place_id'];
 100                         $iParentPlaceID = $aPlace['parent_place_id'];
 101                 }
 102
 103                 // The point we found might be too small - use the address to find what it is a child of
 104                 if ($iPlaceID && $iMaxRank < 28)
 105                 {
 106                         if ($aPlace['rank_search'] > 28 && $iParentPlaceID)
 107                         {
 108                                 $iPlaceID = $iParentPlaceID;
 109                         }
 110                         $sSQL = "select address_place_id from place_addressline where place_id = $iPlaceID order by abs(cached_rank_address - $iMaxRank) asc,cached_rank_address desc,isaddress desc,distance desc limit 1";
 111                         $iPlaceID = $oDB->getOne($sSQL);
 112                         if (PEAR::IsError($iPlaceID))
 113                         {
 114                                 failInternalError("Could not get parent for place.", $sSQL, $iPlaceID);
 115                         }
 116                         if (!$iPlaceID)
 117                         {
 118                                 $iPlaceID = $aPlace['place_id'];
 119                         }
 120                 }
 121         }
 122
 123         if ($iPlaceID)
 124         {
 125                 $sSQL = "select placex.*,";
 126                 $sSQL .= " get_address_by_language(place_id, $sLanguagePrefArraySQL) as langaddress,";
 127                 $sSQL .= " get_name_by_language(name, $sLanguagePrefArraySQL) as placename,";
 128                 $sSQL .= " get_name_by_language(name, ARRAY['ref']) as ref,";
 129                 $sSQL .= " st_y(centroid) as lat, st_x(centroid) as lon";
 130                 $sSQL .= " from placex where place_id = $iPlaceID ";
 131
 132                 $aPlace = $oDB->getRow($sSQL);
 133                 //var_dump($sSQL, $aPlace); exit;
 134
 135                 if ($bShowAddressDetails)
 136                 {
 137                         $aAddress = getAddressDetails($oDB, $sLanguagePrefArraySQL, $iPlaceID, $aPlace['calculated_country_code']);
 138                 }
 139                 $aClassType = getClassTypes();
 140                 $sAddressType = '';
 141                 $sClassType = $aPlace['class'].':'.$aPlace['type'].':'.$aPlace['admin_level'];
 142                 if (isset($aClassType[$sClassType]) && isset($aClassType[$sClassType]['simplelabel']))
 143                 {
 144                         $sAddressType = $aClassType[$aClassType]['simplelabel'];
 145                 }
 146                 else
 147                 {
 148                         $sClassType = $aPlace['class'].':'.$aPlace['type'];
 149                         if (isset($aClassType[$sClassType]) && isset($aClassType[$sClassType]['simplelabel']))
 150                                 $sAddressType = $aClassType[$sClassType]['simplelabel'];
 151                         else $sAddressType = $aPlace['class'];
 152                 }
 153                 $aPlace['addresstype'] = $sAddressType;
 154
 155         }
 156
 157         if (CONST_Debug) exit;
 158
 159         include(CONST_BasePath.'/lib/template/address-'.$sOutputFormat.'.php');