fastadmin微信插件 加入扫码关注自动注册的功能，扫码登录扫码注册

\addons\weixin\library\WechatEvent.php

//复制扫码事件，并判断ticket是否为空，为空则说明不是由参数二维码关注的，不做处理，也可以不加此判断，关注即注册。

    /**
     * @notes 关注事件
     * @author Xing <464401240@qq.com>
     */
    private function subscribe()
    {
        $event_key = str_replace('qrscene_', '', $this->message['EventKey']);
        //扫码登录
        if ($event_key == 'scan_login' && !empty($this->message['Ticket'])) {
            $userServer = new WechatUserService([
                'openid' => $this->message['FromUserName'],
                'ticket' => $this->message['Ticket']
            ], 'wechat');
            $auth = new \app\common\library\Auth();
            $userInfo = $userServer->getResopnseByUserInfo()->authUserLogin($auth)->getUserInfo();
            if (empty($userInfo)) {
                $replyContent = $auth->getError() ?? '发生未知错误';
            } else {
                $replyContent = '恭喜 [' . $userInfo['nickname'] . '] 注册成功！';
            }
            return (new MessageReply)->text($replyContent);
        }

        return (new MessageReply)->handle('subscribe');
    }