public function findWebserver()
    {
        // Try finding from SERVER_SIGNATURE or SERVER_SOFTWARE
        if (!empty($_SERVER['SERVER_SIGNATURE'])) {
            $webserver = $_SERVER['SERVER_SIGNATURE'];
        } elseif (!empty($_SERVER['SERVER_SOFTWARE'])) {
            $webserver = $_SERVER['SERVER_SOFTWARE'];
        } else {
            return false;
        }

        return strip_tags(trim($webserver));
    }