微信小程序登录并生成小程序二维码

后台操作

 

 

    public function login(){
        $post = $this->request->param();
        $url="https://api.weixin.qq.com/sns/jscode2session?appid=".$post['appid']."&secret=".$post['secret']."&js_code=".$post['code']."&grant_type=authorization_code";
        $html = file_get_contents($url);
        $arr = json_decode($html,true);
        if (false == DB::name('users')->where(['openid' => $arr['openid']])->find()) {
        // Db::query('SET nicheng utf8mb4');$post['nickname'] = $post['userinfo']['nickName'];
            $post['create_time'] = time();
            $post['update_time'] = time();
            $post['thumb'] = $post['userinfo']['avatarUrl'];$post['sex'] = '保密';$post['openid'] = $arr['openid'];$post['users_cate_id'] = db("users_cate")->where("name","会员")->value("id");
            model('users')->allowField(true)->save($post);
            $id = model('users')->id;
            $data['qrcode'] = $this->qrcode($id);
            db("users")->where("id",$id)->update($data);
        }else{
            DB::name('users')->where('openid',$arr['openid'])->update(['login_time'=>time(),'nickname'=>$post['userinfo']['nickName'],'thumb'=>$post['userinfo']['avatarUrl']]);
        }
        $info = Db::name('users')->where('openid',$arr['openid'])->find();

        $data = [
            'token'=>createToken($info['id']),
            'openid' => $arr['openid']
        ];
        return json_success(1,"登录成功",$data);
    }

     //获取用户经销商信息 及生成推广二维码
    public function qrcode($uid)
    {
        $info = db("users")->where('id',$uid)->find();
        //拿到openid  查找用户表内是否有该用户  没有则拒绝生成二维码   有则查看是否已生成二维码   有生成则发送数据   没有则生成
        $dealer =  $info['qrcode'];
        // $dealer =  1;
        if($dealer==NULL){
            if($dealer == ''){
                $appid = '***************';
                $secret = '****************';//AppSecret(小程序密钥)
                $url_access_token = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid='.$appid.'&secret='.$secret;
                $json_access_token = $this -> sendCmd($url_access_token,array());
                $arr_access_token = json_decode($json_access_token,true);
                $access_token = $arr_access_token['access_token'];
                if(!empty($access_token)) {
                    $url = 'https://api.weixin.qq.com/cgi-bin/wxaapp/createwxaqrcode?access_token='.$access_token;
                    $data = '{"path": "pages/my/my?uid='.$dealer.'", "width": 430}';
                    $result = $this -> sendCmd($url,$data);
                    $name = $uid.time();
                    file_put_contents('./qrcode/code-'.$name.'.jpg',$result);
                    //存储二维码路径
                    $arr['qrcode'] = '/qrcode/code-'.$name.'.jpg';
                    return $arr['qrcode'];
                } else {
                    return '';
                }
            }else{
                return $info['qrcode'];
            }
        }else{
            return $info['qrcode'];
        }
    }

        /**
     * 发起请求
     * @param  string $url  请求地址
     * @param  string $data 请求数据包
     * @return   string      请求返回数据
     */
    function sendCmd($url,$data)
    {
        $curl = curl_init(); // 启动一个CURL会话
        curl_setopt($curl, CURLOPT_URL, $url); // 要访问的地址
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); // 对认证证书来源的检测
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 2); // 从证书中检查SSL加密算法是否存在
        curl_setopt($curl, CURLOPT_HTTPHEADER, array('Expect:')); //解决数据包大不能提交
        curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1); // 使用自动跳转
        curl_setopt($curl, CURLOPT_AUTOREFERER, 1); // 自动设置Referer
        curl_setopt($curl, CURLOPT_POST, 1); // 发送一个常规的Post请求
        curl_setopt($curl, CURLOPT_POSTFIELDS, $data); // Post提交的数据包
        curl_setopt($curl, CURLOPT_TIMEOUT, 30); // 设置超时限制防止死循
        curl_setopt($curl, CURLOPT_HEADER, 0); // 显示返回的Header区域内容
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); // 获取的信息以文件流的形式返回

        $tmpInfo = curl_exec($curl); // 执行操作
        if (curl_errno($curl)) {
            echo 'Errno'.curl_error($curl);
        }
        curl_close($curl); // 关键CURL会话
        return $tmpInfo; // 返回数据
    }