<?php

/**

 * Project:QQ授权登陆

 * User: luokakale

 * Date: 2019/1/25

 * Time: 14:22

 */

//应用的APPID

$app_id = "";

//应用的APPKEY

$app_secret = "";

//【成功授权】后的回调地址，即此地址在腾讯的信息中有储存

$my_url = "http://XXXXXXX/login.php";

/*

 * No1：获取Authorization Code

 */

session_start();

if(empty($code))

{

    //state参数用于防止CSRF攻击，成功授权后回调时会原样带回

    $_SESSION['qq_state'] = md5(uniqid(rand(), TRUE));

    //拼接URL

    $dialog_url = "https://graph.qq.com/oauth2.0/authorize?response_type=code&client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url) . "&state=" . $_SESSION['qq_state'];

    echo("<script> top.location.href='" . $dialog_url . "'</script>");

}

//获取qq回调时返回的code参数

$code = $_REQUEST["code"];//存放Authorization Code

/*

 * NO.2 通过Authorization Code获取Access Token

 */

if($_REQUEST['state'] == $_SESSION['qq_state'] ) {

    //拼接URL获取access_token

    $token_url = "https://graph.qq.com/oauth2.0/token?grant_type=authorization_code&"."client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url)."&client_secret=" . $app_secret . "&code=" . $code;

    $response = file_get_contents($token_url);

}

/*

 * NO.3:获取用户openID

 */

//把传回来的数据参数变量化

$params = array();

parse_str($response, $params);

$graph_url = "https://graph.qq.com/oauth2.0/me?access_token=".$params['access_token'];

$str = file_get_contents($graph_url);

$user = json_decode($str);//存放返回的数据 client_id ，openid

/*

 * NO.4：使用access_token来获取所接受的用户信息。

 */

$user_data_url = "https://graph.qq.com/user/get_user_info?access_token={$params['access_token']}&oauth_consumer_key={$app_id}&openid={$user->openid}&format=json";

$user_data = file_get_contents($user_data_url);//此为获取到的user信息

$user_data = json_decode($user_data, true);