1 files changed, 3 insertions, 3 deletions
diff --git a/index.php b/index.php
index a95fd6f..72213b0 100644
--- a/index.php
+++ b/index.php
@@ -1,9 +1,9 @@
 <?php
 session_start();
 
-if(isset($_REQUEST['lat'])) $lat = mysql_escape_string($_REQUEST['lat']);
-if(isset($_REQUEST['lng'])) $lng = mysql_escape_string($_REQUEST['lng']);
-if(isset($_REQUEST['res'])) $res = $_REQUEST['res'];
+if(isset($_REQUEST['lat']) && preg_match('/^\-?[0-9\.]+$/', $_REQUEST['lat']) $lat = $_REQUEST['lat'];
+if(isset($_REQUEST['lng']) && preg_match('/^\-?[0-9\.]+$/', $_REQUEST['lng']) $lng = $_REQUEST['lng'];
+if(isset($_REQUEST['res']) && preg_match('/^[0-9]+$/', $_REQUEST['res'])) $res = $_REQUEST['res'];
 
 //default values
 if(empty($lat)) $lat=47.07102;