ThinkPHP を QQ インターネットに接続してログインを実現する事例分析

<?php
/* PHP SDK
 * @version 2.0.0
 * @author connect@qq.com
 * @copyright © 2013, Tencent Corporation. All rights reserved.
 */
namespace qqlogin;
use qqlogin;
class Oauth{
    const VERSION = "2.0";
    const GET_AUTH_CODE_URL = "https://graph.qq.com/oauth2.0/authorize";
    const GET_ACCESS_TOKEN_URL = "https://graph.qq.com/oauth2.0/token";
    const GET_OPENID_URL = "https://graph.qq.com/oauth2.0/me";
    // protected $recorder;
    public $urlUtils;
    // protected $error;
    
    function __construct(){
        // $this->recorder = new Recorder();
        $this->urlUtils = new URL();
        // $this->error = new ErrorCase();
    }
    public function qq_login(){
        // $appid = $this->recorder->readInc("appid");
        // $callback = $this->recorder->readInc("callback");
        // $scope = $this->recorder->readInc("scope");
        $appid = $this->appid;
        $callback = $this->callback;
        $scope = $this->scope;
        //-------生成唯一随机串防CSRF攻击
        $state = md5(uniqid(rand(), TRUE));
        // $this->recorder->write(&#39;state&#39;,$state);
        session(&#39;state&#39;,$state);
        //-------构造请求参数列表
        $keysArr = array(
            "response_type" => "code",
            "client_id" => $appid,
            "redirect_uri" => $callback,
            "state" => $state,
            "scope" => $scope
        );
        $login_url =  $this->urlUtils->combineURL(self::GET_AUTH_CODE_URL, $keysArr);
        return $login_url;
    }
    public function qq_callback(){
        // $state = $this->recorder->read("state");
        //--------验证state防止CSRF攻击
        if(input(&#39;state&#39;) != session(&#39;state&#39;)){
            // $this->error->showError("30001");
            exit(&#39;30001&#39;);
        }
        //-------请求参数列表
        $keysArr = array(
            "grant_type" => "authorization_code",
            "client_id" => $this->appid,
            "redirect_uri" => urlencode($this->callback),
            "client_secret" => $this->appkey,
            "code" => $_GET[&#39;code&#39;]
        );
        //------构造请求access_token的url
        $token_url = $this->urlUtils->combineURL(self::GET_ACCESS_TOKEN_URL, $keysArr);
        $response = $this->urlUtils->get_contents($token_url);
        if(strpos($response, "callback") !== false){
            $lpos = strpos($response, "(");
            $rpos = strrpos($response, ")");
            $response  = substr($response, $lpos + 1, $rpos - $lpos -1);
            $msg = json_decode($response);
            // if(isset($msg->error)){
            //     $this->error->showError($msg->error, $msg->error_description);
            // }
        }
        $params = array();
        parse_str($response, $params);
        // $this->recorder->write("access_token", $params["access_token"]);
        // return $params["access_token"];
        session(&#39;access_token&#39;,$params["access_token"]);
    }
}

use qqlogin\QC;
// 处理qq登录
    public function qqlogin(){
        $qq = new QC();
        $url = $qq->qq_login();
        $this->redirect($url);
    }
    // qq登录回调函数
    public function qqcallback(){
        $qq = new QC();
        $qq->qq_callback();
        $qq->get_openid();
        $qq = new QC();
        $datas = $qq->get_user_info();
        die(var_dump($datas));//为用户数据
    }