网页授权获取用户基本信息

 public function openOAuth(){
        //获取回调连接中带有的code
        $code = $_GET[‘code‘];
        //获取access_token openid
        $json = file_get_contents("https://api.weixin.qq.com/sns/oauth2/access_token?appid=wx7a5423a6f023716c5&secret=6bb7bstddekxrsa3bdcd296979bfb66967f41&code=$code&grant_type=authorization_code");
        $json = json_decode($json);

        $refresh_token =  $json->refresh_token;
　　　　　　//通过refresh_token 获取需要的access_token
        $json_ref = file_get_contents("https://api.weixin.qq.com/sns/oauth2/refresh_token?appid=wx3a542a6f094310c5&grant_type=refresh_token&refresh_token=$refresh_token");
        $json_ref = json_decode($json_ref);
        $access_token = $json_ref->access_token;
        $openId = $json_ref->openid;
        $json_userinfo = file_get_contents("https://api.weixin.qq.com/sns/userinfo?access_token=$access_token&openid=$openId&lang=zh_CN");
        $json_userinfo = json_decode($json_userinfo);
        $nikename = $json_userinfo->nickname;
        $sex = $json_userinfo->sex;
        $area = $json_userinfo->province.‘-‘.$json_userinfo->city.‘-‘.$json_userinfo->country;
        $headimgurl = $json_userinfo->headimgurl;
        //echo $headimgurl;
        $privilege = $json_userinfo->privilege;
        $unionid = $json_userinfo->unionid;
        echo "<h1>展示身份信息</h1>";
        echo"<h2>昵称：$nikename</h2>";
        echo"<h2>性别：$sex</h2>";
        echo"<h2>地址：$area</h2>";
        echo‘<h2>头像</h2><img src="‘.$headimgurl.‘">‘;
        echo"<h2>privilege:$privilege </h2>";
        echo"<h2>unionid:$unionid</h2>";

    }