private function get_cookie_save_path()
{
$this->cookie_path = $this->base_siteurl . '/';
$cookie_domain = preg_replace('/^([w]{3})\\./', '', $this->server_name);
$this->cookie_domain = preg_match('/^([0-9a-z][0-9a-z-]+\\.)+[a-z]{2,6}$/', $cookie_domain) ? '.' . $cookie_domain : '';
}