function unregister_GLOBALS()
{
if (!ini_get('register_globals')) {
       return;
   }

   // Might want to change this perhaps to a nicer error
   if (isset($_REQUEST['GLOBALS']) || isset($_FILES['GLOBALS'])) {
       die('GLOBALS overwrite attempt detected');
   }

   // Variables that shouldn't be unset
   $noUnset = array('GLOBALS',  '_GET',
                     '_POST',    '_COOKIE',
                     '_REQUEST', '_SERVER',
                     '_ENV',    '_FILES');

   $input = array_merge($_GET,    $_POST,
                         $_COOKIE, $_SERVER,
                         $_ENV,    $_FILES,
                         isset($_SESSION) && is_array($_SESSION) ? $_SESSION : array());
  
   foreach ($input as $k => $v) {
       if (!in_array($k, $noUnset) && isset($GLOBALS[$k])) {
           unset($GLOBALS[$k]);
       }
   }
}

unregister_GLOBALS();