PHP redirection

Очень удобная штука. Редиректит на http://172.26.18.179/cacti/

$ref=$_SERVER['QUERY_STRING'];
if ($ref!='') $ref='?'.$ref;
header('HTTP/1.1 301 Moved Permanently');
header('Location: http://172.26.18.179/cacti/'.$ref);
exit();
?>