Reverse geocoding of minor stops to street names
[bus.git] / maxious-canberra-transit-feed / 04-locatebetweenpoints.reversegeocode.php
blob:a/maxious-canberra-transit-feed/04-locatebetweenpoints.reversegeocode.php -> blob:b/maxious-canberra-transit-feed/04-locatebetweenpoints.reversegeocode.php
--- a/maxious-canberra-transit-feed/04-locatebetweenpoints.reversegeocode.php
+++ b/maxious-canberra-transit-feed/04-locatebetweenpoints.reversegeocode.php
@@ -1,1 +1,38 @@
+<?php
+function getPage($url)
+{
+    $ch = curl_init($url);
+curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1 );
+curl_setopt( $ch, CURLOPT_HEADER, 0 );
+$page = curl_exec($ch);
+curl_close($ch);
+return $page;
+}
+// 
+// http://developers.cloudmade.com/wiki/geocoding-http-api/Documentation
+$conn = pg_connect("dbname=bus user=postgres password=snmc");
+if (!$conn) {
+  echo "An error occured.\n";
+  exit;
+}
+$sql = "Select * from stops where name is null";
+     $result_stops = pg_query($conn, $sql);
+     if (!$result_stops) {
+	cho("Error in SQL query: " . pg_last_error() ."<br>\n");
+     }
+     while ($stop = pg_fetch_assoc($result_stops)) {
+      echo "Processing ".$stop['geohash'] . " ... ";
+      $url = "http://geocoding.cloudmade.com/daa03470bb8740298d4b10e3f03d63e6/geocoding/v2/find.js?around=".($stop['lat']/10000000).",".($stop['lng']/10000000)."&distance=closest&object_type=road";
+      $contents = json_decode(getPage($url));
+      $name = $contents->features[0]->properties->name;
+      echo "Saving $name ! <br>" ;
+      $result_save = pg_query($conn, "UPDATE stops set name = '".pg_escape_string($name)."' where geohash = '{$stop['geohash']}' ");
+			      if (!$result_save) {
+	echo("Error in SQL query: " . pg_last_error() ."<br>\n");
+     }
+     flush();
+     }
 
+?>
+
+