images and javascript

reverse.php

@@ -0,0 +1,161 @@
+<?php
+
+        require_once('.htlib/init.php');
+
+        if (strpos(CONST_BulkUserIPs, ','.$_SERVER["REMOTE_ADDR"].',') !== false)
+        {
+                $fLoadAvg = getLoadAverage();
+                if ($fLoadAvg > 2) sleep(60);
+                if ($fLoadAvg > 4) sleep(120);
+                if ($fLoadAvg > 6)
+                {
+                        echo "Bulk User: Temporary block due to high server load\n";
+                        exit;
+                }
+        }
+
+        ini_set('memory_limit', '200M');
+
+        // Format for output
+	$sOutputFormat = 'xml';
+        if (isset($_GET['format']) && ($_GET['format'] == 'xml' || $_GET['format'] == 'json'))
+        {
+                $sOutputFormat = $_GET['format'];
+        }
+
+        // Prefered language
+        $aLangPrefOrder = getPrefferedLangauges();
+        $sLanguagePrefArraySQL = "ARRAY[".join(',',array_map("getDBQuoted",$aLangPrefOrder))."]";
+
+	$hLog = logStart($oDB, 'reverse', $_SERVER['QUERY_STRING'], $aLangPrefOrder);
+
+        if (isset($_GET['osm_type']) && isset($_GET['osm_id']) && (int)$_GET['osm_id'] && ($_GET['osm_type'] == 'N' || $_GET['osm_type'] == 'W' || $_GET['osm_type'] == 'R'))
+        {
+                $iPlaceID = $oDB->getOne("select place_id from placex where osm_type = '".$_GET['osm_type']."' and osm_id = ".(int)$_GET['osm_id']." order by type = 'postcode' asc");
+		if (!$iPlaceID) $sError = 'OSM ID Not Found';
+        }
+	else
+	{
+		// Location to look up
+		$fLat = (float)$_GET['lat'];
+		$fLon = (float)$_GET['lon'];
+		$sPointSQL = "ST_SetSRID(ST_Point($fLon,$fLat),4326)";
+
+		// Zoom to rank, this could probably be calculated but a lookup gives fine control
+		$aZoomRank = array(
+			0 => 2, // Continent / Sea
+			1 => 2,
+			2 => 2,
+			3 => 4, // Country
+			4 => 4,
+			5 => 8, // State
+			6 => 10, // Region
+			7 => 10, 
+			8 => 12, // County
+			9 => 12,  
+			10 => 17, // City
+			11 => 17, 
+			12 => 18, // Town / Village
+			13 => 18, 
+			14 => 22, // Suburb
+			15 => 22,
+			16 => 26, // Street, TODO: major street?
+			17 => 26, 
+			18 => 28, // or >, Building
+			19 => 30, // or >, Building
+			);
+		$iMaxRank = isset($aZoomRank[$_GET['zoom']])?$aZoomRank[$_GET['zoom']]:28;
+
+		// Find the nearest point
+		$fSearchDiam = 0.0001;
+		$iPlaceID = null;
+		$aArea = false;
+		$fMaxAreaDistance = 10;
+		while(!$iPlaceID && $fSearchDiam < $fMaxAreaDistance)
+		{
+			$fSearchDiam = $fSearchDiam * 2;
+
+			// If we have to expand the search area by a large amount then we need a larger feature
+			// then there is a limit to how small the feature should be
+			if ($fSearchDiam > 2 && $iMaxRank > 4) $iMaxRank = 4;
+			if ($fSearchDiam > 1 && $iMaxRank > 9) $iMaxRank = 8;
+			if ($fSearchDiam > 0.8 && $iMaxRank > 10) $iMaxRank = 10;
+			if ($fSearchDiam > 0.6 && $iMaxRank > 12) $iMaxRank = 12;
+			if ($fSearchDiam > 0.2 && $iMaxRank > 17) $iMaxRank = 17;
+			if ($fSearchDiam > 0.1 && $iMaxRank > 18) $iMaxRank = 18;
+			if ($fSearchDiam > 0.01 && $iMaxRank > 22) $iMaxRank = 22;
+
+			if ($iMaxRank >= 26)
+			{
+				// Street level search is done using placex table
+				$sSQL = 'select place_id from placex';
+				$sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
+				$sSQL .= ' and rank_search >= 26 and rank_search <= '.$iMaxRank;
+				$sSQL .= ' and (ST_GeometryType(geometry) not in (\'ST_Polygon\',\'ST_MultiPolygon\') ';
+				$sSQL .= ' OR ST_DWithin('.$sPointSQL.', ST_Centroid(geometry), '.$fSearchDiam.'))';
+				$sSQL .= ' ORDER BY rank_search desc, ST_distance('.$sPointSQL.', geometry) ASC limit 1';
+				$iPlaceID = $oDB->getOne($sSQL);
+				if (PEAR::IsError($iPlaceID))
+				{
+					var_Dump($sSQL, $iPlaceID); 
+					exit;
+				}
+			}
+			else
+			{
+				// Other search uses the location_point and location_area tables
+
+				// If we've not yet done the area search do it now
+				if ($aArea === false)
+				{
+					$sSQL = 'select place_id,rank_address,ST_distance('.$sPointSQL.', centroid) as distance from location_area';
+					$sSQL .= ' WHERE ST_Contains(area,'.$sPointSQL.') and rank_search <= '.$iMaxRank;
+					$sSQL .= ' ORDER BY rank_address desc, ST_distance('.$sPointSQL.', centroid) ASC limit 1';
+					$aArea = $oDB->getRow($sSQL);
+					if ($aArea) $fMaxAreaDistance = $aArea['distance'];
+				}
+
+				// Different search depending if we found an area match
+				if ($aArea)
+				{
+					// Found best match area - is there a better point match?
+					$sSQL = 'select place_id from location_point_'.($iMaxRank+1);
+					$sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.') ';
+					$sSQL .= ' and rank_search > '.($aArea['rank_address']+3);
+					$sSQL .= ' ORDER BY rank_address desc, ST_distance('.$sPointSQL.', centroid) ASC limit 1';
+					$iPlaceID = $oDB->getOne($sSQL);
+					if (PEAR::IsError($iPlaceID))
+					{
+						var_Dump($sSQL, $iPlaceID); 
+						exit;
+					}
+				}
+				else
+				{
+					$sSQL = 'select place_id from location_point_'.($iMaxRank+1);
+					$sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.') ';
+					$sSQL .= ' ORDER BY rank_address desc, ST_distance('.$sPointSQL.', centroid) ASC limit 1';
+					$iPlaceID = $oDB->getOne($sSQL);
+					if (PEAR::IsError($iPlaceID))
+					{
+						var_Dump($sSQL, $iPlaceID); 
+						exit;
+					}
+				}
+			}
+		}
+		if (!$iPlaceID && $aArea) $iPlaceID = $aArea['place_id'];
+	}
+
+	if ($iPlaceID)
+	{
+		$sSQL = "select placex.*,";
+        	$sSQL .= " get_address_by_language(place_id, $sLanguagePrefArraySQL) as langaddress,";
+	        $sSQL .= " get_name_by_language(name, $sLanguagePrefArraySQL) as placename,";
+        	$sSQL .= " get_name_by_language(name, ARRAY['ref']) as ref";
+	        $sSQL .= " from placex where place_id = $iPlaceID ";
+		$aPlace = $oDB->getRow($sSQL);
+
+		$aAddress = getAddressDetails($oDB, $sLanguagePrefArraySQL, $iPlaceID, $aPlace['country_code']);
+	}
+	include('.htlib/output/address-'.$sOutputFormat.'.php');