public function TrustedShopsImage_CacheCheck($filename_cache, $timeout = 10800)
    {
        $bRet = false;
        if (file_exists($filename_cache)) {
            $timestamp = filemtime($filename_cache);
            // Seconds
            if (mktime() - $timestamp < $timeout) {
                $bRet = true;
            } else {
                $bRet = false;
            }
        } else {
            $bRet = false;
        }

        return $bRet;
    }