微信授權(quán)登陸

第一步：用戶同意授權(quán)，獲取code

在確保微信公眾賬號(hào)擁有授權(quán)作用域（scope參數(shù)）的權(quán)限的前提下（服務(wù)號(hào)獲得高級(jí)接口后，默認(rèn)擁有scope參數(shù)中的snsapi_base和snsapi_userinfo），引導(dǎo)關(guān)注者打開如下頁(yè)面：

https://open.weixin.qq.com/connect/oauth2/authorize?appid=APPID&redirect_uri=REDIRECT_URI&response_type=code&scope=SCOPE&state=STATE#wechat_redirect

第二步：通過(guò)code換取網(wǎng)頁(yè)授權(quán)access_token

https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code 

第三步：刷新access_token（如果需要）

https://api.weixin.qq.com/sns/oauth2/refresh_token?appid=APPID&grant_type=refresh_token&refresh_token=REFRESH_TOKEN 

第四步：拉取用戶信息(需scope為 snsapi_userinfo)

https://api.weixin.qq.com/sns/userinfo?access_token=ACCESS_TOKEN&openid=OPENID&lang=zh_CN 

具體代碼實(shí)現(xiàn)

public function actionGetUserInfo(){
        //第一步：用戶同意授權(quán)，獲取code
        $appid = "wx9c044f";
        $redirect_url = urlencode("http://admin.cheesebeer.net/index.php?r=share/get-user");
        $url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=".$appid."&redirect_uri=".$redirect_url."&response_type=code&scope=snsapi_userinfo&state=".time()."#wechat_redirect";
        header("location:".$url);
    }
public function actionGetUser(){
        $code = $_GET['code'];
        $appid = "wx9c044f981";
        $app_secret = "3fd73bb4cd76af92528e3";
        $url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$appid."&secret=".$app_secret."&code=".$code."&grant_type=authorization_code";
        $res = json_decode($this->_http_curl_get($url));

        if(isset($res->access_token)){
            $get_user_url = "https://api.weixin.qq.com/sns/userinfo?access_token=".$res->access_token."&openid=".$res->openid."&lang=zh_CN";
            $user_info = json_decode($this->_http_curl_get($get_user_url));
            $target_url = "http://movietip1.duapp.com/index.html?headimgurl=".$user_info->headimgurl."&nickname=".$user_info->nickname;
            header("location:".$target_url);
        }
    }

注意點(diǎn)

需要在微信后臺(tái)填寫 授權(quán)回調(diào)頁(yè)面域名: 即上面的$redirect_url，$redirect_url需要urlencode,才能正常使用

Paste_Image.png

自定義分享接口

代碼采用的是yii2框架作為開發(fā)的基礎(chǔ)框架

public function actionShare()
    {

        $app_id = Yii::$app->request->get('app_id','wx3639f3e999c3');
        $app_secret = Yii::$app->request->get('app_secret','5e0d10f0f9b8c593e48f5dec');
        $url = Yii::$app->request->get('url','http://marqian.duapp.com/');

        $options = [
            "app_id"=>$app_id,
            "secret"=>$app_secret,
        ];

        $wechat = new Application($options);
        $wechat->js->setUrl($url);

        return ($wechat->js->config(['onMenuShareTimeline','onMenuShareAppMessage'],true));

    }