--- a/betweenpoint.submit.php
+++ b/betweenpoint.submit.php
@@ -5,9 +5,9 @@
   exit;

 }

 print_r($_REQUEST);

-$reverse=$_REQUEST["reverse"];

-$from=$_REQUEST["from"];

-$to=$_REQUEST["to"];

+$reverse=(isset($_REQUEST["reverse"]) ? $_REQUEST["reverse"] : "off");

+$from=pg_escape_string($_REQUEST["from"]);

+$to=pg_escape_string($_REQUEST["to"]);

 $routes=$_REQUEST["routes"] ;

 $points=$_REQUEST["between_points"];

    $sql = "INSERT INTO between_stops (fromLocation, toLocation, points, routes) VALUES('$from','$to','$points','$routes')";