微信公众号一键登录 授权三方平台

class WxloginController extends Controller{
    public $user_info;//微信账号信息
    public function actionIndex(){
        $class =new wxlogin();
        $redirect_url = "http://域名/wxlogin/callback";
        $state = "STATE";
        $data = $class->get_authorize_url($redirect_url,$state);
    }

    public function actionCallback(){
        $class = new wxlogin();
        $code = $_GET['code'];
        if(!$code)
            $this->redirect('/');
        $arr = $class->get_access_token('','',$code);
        if(!$arr)
            $this->redirect('/');
        $userinfo = $class->get_user_info($arr['access_token'],$arr['openid']);//获得微信用户信息
        if(!$userinfo)
            $this->redirect('/');

        //nickname,openid,sex,language,city,province,country,headimageurl,微信用户参数
      
            //echo "<script>alert('您使用微信账号登陆成功！');window.location.href='/'</script>";
    }

wxlogin这个类 就是企鹅提供的SDK类 改$app_id，$app_secret即可