eXorithm – Execute Algorithm: View / Run Algorithm address_elevation

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function address_elevation ($address

{

  // get the lat/long for this address

  $data = file_get_contents"http://maps.google.com/maps/geo?output=csv&q="urlencode$address));

  $arr = explode","$data);

  if (count$arr)>=4) {

    if ($arr[0]==200) {

      // get the elevation for this lat/long

      $data = file_get_contents"http://maps.googleapis.com/maps/api/elevation/xml?sensor=false&locations="$arr[2].','$arr[3]);

      $obj = simplexml_load_string$data);

      if ($obj instanceof SimpleXMLElement) {

        $obj = (array) $obj

        $obj = $obj'result'];

        if ($obj instanceof SimpleXMLElement) {

          $obj = (array) $obj

          return $obj'elevation'];

        } else {

          throw new Exception'Elevation lookup failed');

        }

      } else {

        throw new Exception'Elevation lookup failed');

      }

    } else {

      throw new Exception'Address lookup failed');

    }

  } else {

    throw new Exception'Address lookup failed');

  }