Controller\Member::buyTransfer PHP 메소드

    public function buyTransfer()
    {
        $user = User::getCurrent();
        if (!$user) {
            throw new Error('login timeout', 405);
        }
        $user = User::getUserByUserId($user->uid);
        if ($user->transfer - $user->getUseTransfer() > Utils::GB * 10) {
            throw new Error('流量还很充足，无需购买临时流量', 200);
        }
        if ($user->money <= 0) {
            throw new Error('您的余额不足，无法购买', 200);
        }
        if ($user->expireTime <= time()) {
            throw new Error('告诉你一个秘密，你的账号已经到期了，到期账户是无法购买流量的。你需要先续期哟 (●\'◡\'●)', 200);
        }
        $user->money--;
        $user->flow_down = $user->flow_down - Utils::GB;
        $user->enable = 1;
        $user->save();
        $_SESSION['currentUser'] = $user;
        // 将用户信息更新到 session 中.
        return array('useTransfer' => Utils::flowAutoShow($user->getUseTransfer()), 'slaTransfer' => Utils::flowAutoShow($user->transfer - $user->getUseTransfer()), 'money' => $user->money, 'message' => '系统发动功力，将您之前使用的流量减去了 1GB。现在你可以继续使用了');
    }