if (send_regiter_hash($user_id))
    {
        $result['message'] = $_LANG['validate_mail_ok'];
        die($json->encode($result));
    }

    if (isset($_SESSION['send_email_time']))
    {
        if (gmtime()-$_SESSION['send_email_time'] < 30)
        {
            $result['error']   = 1;
            $result['message'] ='您的操作过于频繁，30秒内请勿重复操作！';
            die($json->encode($result));
        }
    }
    if (send_regiter_hash($user_id))
    {
        $result['message'] = $_LANG['validate_mail_ok'];
        $_SESSION['send_email_time'] = gmtime();
        die($json->encode($result));
    }