Not vuln. :\
$this_path =
substr($_SERVER["SCRIPT_FILENAME"],0,max(strrpos($_SERVER["SCRIPT_FILENAME"],"/"),strrpos($_SERVER["SCRIPT_FILENAME"],"\\"))+1);
// uncomment the following line if you run into an error like "Fatal
error trying to include config.inc.php"
// $this_path = "/absolute/path/to/naig/";