»Google weiterleiten, falls Session ID in der URL steht

// redirect if url contains session id 
if ((!$logged_in || $is_bot) && strpos($_SERVER['REQUEST_URI'], 'sid=') !== false) { 
   header('HTTP/1.1 301 Moved Permanently'); 
   $_SERVER['REQUEST_URI'] = preg_replace('#sid=[a-f0-9]{32}#i', '', $_SERVER['REQUEST_URI']); 
   $row = strlen($_SERVER['REQUEST_URI'])-1; 
   $_SERVER['REQUEST_URI'] = $_SERVER['REQUEST_URI']{ $row } == '?' ? substr($_SERVER['REQUEST_URI'], 0, $row) : $_SERVER['REQUEST_URI']; 
   header('Location: http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']); 
   exit; 
}