$dir = $this->getParameter('session.save_path');
        $files = scandir($dir);
        $minutes = 1;
        $delay = time() - $minutes * 60;
        $online = 0;
        foreach ($files as $file) {
            if ($file != '.' and $file != '..' and filesize($dir.'/'.$file) != 0) {
                $updateStamp = filemtime($dir.'/'.$file);
                if ($updateStamp > $delay) {
                    $online++;
                    //echo date("H:i:s d.m.y", $updateStamp)."<br>";
                }
            }
        }