uniapp微信小程序一键登录，配合后端php的easyWechat

功能示例图如下

用户点击一键登录，用户点击允许后获取用户手机号码

前端代码：

<button class="confirm-btn" open-type="getPhoneNumber" @getphonenumber="onGetPhoneNumber" style="background: linear-gradient(55deg, #377ffd, #5db7fb);">
      一键登录
</button>

js代码

    // 手机号授权
    onGetPhoneNumber(e){

        // 用户已授权
        if (e.detail.errMsg === 'getPhoneNumber:ok') {
            const iv = e.detail.iv
            const code = e.detail.code
            const encryptedData = e.detail.encryptedData
            // 将 encryptedData 和 iv 发送到后端解密
            this.quickLogin(encryptedData, iv)
        } else {
            // 用户拒绝授权
            uni.showToast({
                title: '授权失败',
                icon: 'error'
            })
        }
    },


    quickLogin(_encryptedData=null, _iv=null){
        const that = this
        uni.login({
            provider: 'weixin',
            success: function(loginRes) {
                uni.getUserInfo({
                    success: (userInfoRes) => {

                        const iv = _iv ?? userInfoRes.iv 
                        const encryptedData = _encryptedData ?? userInfoRes.encryptedData

                        http.post('/user/login', {
                            iv: iv,
                            register: true,
                            code: loginRes.code,
                            encryptedData: encryptedData,
                        }).then(res => {
                            if(res.code == 0){
                                //登录成功，设置用户信息


                            }else{
                                uni.showModal({
                                    title: '登录失败',
                                    content: res.msg,
                                    showCancel: false,
                                    confirmText: '确定',
                                })
                            }
                        })

                    },fail: (res) =>{
                        console.log('失败', res)
                    }
                })
            },fail: (res) =>{
                console.log('失败', res)
            }
        })
    }

后端使用的是thinkphp6，和easyWeChat的SKD4.0版本
文档：https://easywechat.com/4.x/

    /**
     * 一键登录
     */
    public function quickLogin()
    {
        $param = $this->request->param();

        $code = $param['code'];
        $iv = $param['iv'];
        $encryptedData = $param['encryptedData'];

        $app = Factory::miniProgram($config);

         //根据code获取session_key
         $wxUserInfo = $this->app->auth->session($code);

        //消息解密。比如获取电话等功能，信息是加密的，需要解密。
        $data = $this->app->encryptor->decryptData($wxUserInfo['session_key'], $iv, $encryptedData);

        //输出
        dump($data);

//        [
//            "phoneNumber" => "手机号"
//            "purePhoneNumber" => "手机号"
//            "countryCode" => "86"
//            "watermark" => array:2 [
//            "timestamp" => 1721456497
//                "appid" => ""
//            ]
//        ]

        //登录逻辑...

    }