/**
* Returns `$_GET`, `$_POST` and `$_FILES` and the `PUT`/`DELTE` post data to the state they were at before ::filter() was called
*
* @internal
*
* @return void
*/
public static function unfilter()
{
if (self::$backup_get === array()) {
throw new fProgrammerException('%1$s can only be called after %2$s', __CLASS__ . '::unfilter()', __CLASS__ . '::filter()');
}
$_FILES = array_pop(self::$backup_files);
$_GET = array_pop(self::$backup_get);
$_POST = array_pop(self::$backup_post);
self::$put_delete = array_pop(self::$backup_put_delete);
}