Detailed explanation of website access to QQ, WeChat and Weibo third-party login

The overall idea of ​​three-party login isGet the openid in the third party, then associate it with the user (store it in the database), and log in. This article mainly shares with you the detailed explanation of third-party login for website access to QQ, WeChat, and Weibo. I hope it can help everyone.

The current requirement is: two (or more) first-level domain names, such as maxiye.cn and yexima.com, and each domain name has multiple Second-level domain name distribution, such as: app.maxiye.cn, new.maxiye.cn, old.maxiye.cn, app.yexima.com, new.yexima.com, old.yexima.com.. .etc., but these domain names use the same code (yes, the vest) and share the database and session. At the same time, each of its domain names includes PC, ios, and Android terminals. How to access all third-party logins?

QQ, WeChat, Weibo access points:
1.Application entrance: QQ is QQ Internet, WeChat is WeChat open platform, and Weibo is Weibo open platform;
2.Callback domain setting: QQ can set a first-level domain name and there can be multiple, it must start with http:// and end with ;, such as http://maxiye.cn;http://yexima.com;; WeChat can only be set to a second-level domain name and only one, the format is: app.maxiye.cn;
Weibo can also set a first-level domain name and it is one: maxiye.cn;
3.unionid acquisition: multiple apps (same ) shared database under developer account, so unionid needs to be used to confirm identity. QQ needs to apply for additional permissions to obtain uuid. For details, please refer to how to connect different appid applications under the same developer account; WeChat already has a unionid acquisition interface; Weibo uses uid as unionid;

pit:
1.QQ Many of the results returned by the interface are in jsonp format, which needs to be stripped manuallycallback();
2. Weibo acquisitionobtain access_tokenactually must be used post, shocked;
3. WeChat does not support filling in the first-level domain name for the callback address, so you need to use unified domain name (agent) as the callback address, and then redirect internally to the person who sent the application Domain name;

The following is a written tool class:

<?php
/* PHP SDK 第三方登录授权验证
 * @version 1.0.0
 * @author zyl
 * @copyright
 */

namespace app\helpers;

use yii\helpers\Url;
use Yii;

class OauthLogin
{
    public $server = &#39;&#39;;//接入第三方的域名
    public $proxy = &#39;app.maxiye.cn&#39;;//微信登录代理中转站点
    private $type = &#39;&#39;;//第三方类型：qq,weixin,weibo
    private $app_id = &#39;&#39;;//分配给网站的appid。
    private $app_secret = &#39;&#39;;//分配给网站的appkey。
    private $state = &#39;&#39;;//client端的状态值。用于第三方应用防止CSRF攻击，成功授权后回调时会原样带回。请务必严格按照流程检查用户与state参数状态的绑定。
    private $code = &#39;&#39;;//用户成功登录并授权，则会跳转到指定的回调地址，并在URL中带上Authorization Code。
    private $access_token;
    private $config = [//配置多个网站的appid&appkey
        &#39;maxiye.cn&#39; => [
            'qq' => [
                'app_id' => '100000000',
                'app_secret' => 'f9038c3d07c*******7884edf3e31708',
            ],
            'weixin' => [
                'app_id' => 'wxee7c90a7744c2002',
                'app_secret' => '13e649627894*******7a85a0e2f50e7',
            ],
            'weibo' => [
                'app_id' => '1200000000',
                'app_secret' => 'e074de8*******d3818d0df9ca28c459',
            ],
        ],
        'yexima.com' => [
            'qq' => [
                'app_id' => '101111244',
                'app_secret' => '6ca59c6a1b1*******77e636a10ac334',
            ],
            'weixin' => [
                'app_id' => 'wx0b822222ea9ee323',
                'app_secret' => '7f9cbd*******f37ce7b4c267bdde029',
            ],
            'weibo' => [
                'app_id' => '911111998',
                'app_secret' => '5b21c452f88e2982*******1722d8fcd',
            ],
        ],
    ];

    function __construct($params = [])
    {
        $this->type = $params['type'];
        $this->server = $_SERVER['SERVER_NAME'];
        foreach ($this->config as $k => $v) {
            if (stristr($this->server, $k) && isset($v[$this->type])) {
                $this->app_id = $v[$this->type]['app_id'];
                $this->app_secret = $v[$this->type]['app_secret'];
            }
        }
        if (isset($params['code'])) {
            $this->code = $params['code'];
        }
    }

    /**
     * 获取用户授权验证的链接
     * @return string
     */
    public function getOauthUrl()
    {
        $this->state = md5(uniqid(rand(), TRUE));
        Yii::$app->session->setFlash('oauth_state', $this->state);
        $redirect_uri = urlencode(Url::to(['login-by-openid', 'type' => $this->type, true));
        if ($this->type == 'weixin' && $this->server != $this->proxy) {//微信回调多域名代理处理
            $redirect_uri = str_replace($this->server, $this->proxy, $redirect_uri) . '%26redirect%3D' . $this->server;
        }
        $url = '';
        switch ($this->type) {
            case 'qq'://qq回调域填写一级域名并以“;”结束：http://maxiye.cn;http://yexima.com;
                $url = "https://graph.qq.com/oauth/show?which=Login&display=pc&response_type=code&client_id={$this->app_id}&state={$this->state}&display=web&redirect_uri={$redirect_uri}";
                break;
            case 'weixin'://app.maxiye.cn不支持只填写二级域名
                $url = "https://open.weixin.qq.com/connect/qrconnect?response_type=code&appid={$this->app_id}&state={$this->state}&scope=snsapi_login&redirect_uri={$redirect_uri}#wechat_redirect";
                break;
            case 'weibo'://微博设置安全域名：maxiye.cn
                $url = "https://api.weibo.com/oauth2/authorize?response_type=code&client_id={$this->app_id}&state={$this->state}&display=web&redirect_uri={$redirect_uri}";
                break;

            default:

                break;
        }
        return $url;
    }

    /**
     * 获取针对开发者账号的惟一uuid
     * @return string unionid或uid
     */
    public function getUuid()
    {
        $openid = '';
        if ($this->type == 'qq') {
            $this->getAccessToken();
        } else {
            $openid = $this->getOpenid();
        }
        $access_token = $this->access_token;
        $uuid = '';
        if ($access_token) {
            switch ($this->type) {
                case 'qq':
                    $url = "https://graph.qq.com/oauth2.0/me?access_token={$access_token}&unionid=1";
                    // 返回示例...
                    /*callback({
                           "client_id":"YOUR_APPID",
                           "openid":"YOUR_OPENID",
                           "unionid":"YOUR_UNIONID"
                    });*/
                    $result = $this->get_contents($url);
                    if (strpos($result, "callback") !== false) {
                        $lpos = strpos($result, "(");
                        $rpos = strrpos($result, ")");
                        $result = json_decode(substr($result, $lpos + 1, $rpos - $lpos - 1), true);
                        $uuid = isset($result['unionid']) ? $result['unionid'] : '';
                    }
                    return $uuid;
                    // return $openid;
                    break;
                case 'weixin':
                    $url = "https://api.weixin.qq.com/sns/userinfo?access_token={$access_token}&openid={$openid}";
                    // 返回示例
                    /*{
                        "openid":"OPENID",
                        "nickname":"NICKNAME",
                        "sex":1,
                        "province":"PROVINCE",
                        "city":"CITY",
                        "country":"COUNTRY",
                        "headimgurl": "http://wx.qlogo.cn/mmopen/g3MonUZtNHkdmzicIlibx6iaFqAc56vxLSUfpb6n5WKSYVY0ChQKkiaJSgQ1dZuTOgvLLrhJbERQQ4eMsv84eavHiaiceqxibJxCfHe/0",
                        "privilege":[
                            "PRIVILEGE1",
                            "PRIVILEGE2"
                        ],
                        "unionid": " o6_bmasdasdsad6_2sgVt7hMZOPfL"

                    }*/
                    $result = json_decode($this->get_contents($url), true);
                    return isset($result['unionid']) ? $result['unionid'] : '';
                    break;
                case 'weibo':
                    return $openid;
                    break;

                default:

                    break;
            }
        }
        return $uuid;
    }

    /**
     * 获取access_token
     * @param boolean $true false表示获取原始结果，true获取真正的access_token
     * @return string json包|string
     */
    public function getAccessToken($true = true)
    {
        //验证state
        if (Yii::$app->request->get('state', '') != Yii::$app->session->getFlash('oauth_state')) {
            return '';
        }
        $redirect_uri = urlencode(Url::to(['login-by-openid', 'type' => $this->type], true));
        $url = '';
        switch ($this->type) {
            case 'qq':
                $url = "https://graph.qq.com/oauth2.0/token?grant_type=authorization_code&code={$this->code}&client_id={$this->app_id}&client_secret={$this->app_secret}&redirect_uri={$redirect_uri}";
                //返回示例...
                //access_token=15C0CE01C0311240F9091A7DB6828E62&expires_in=7776000&refresh_token=7BFCE2E5B773D4F5531561A10E1C2B2D
                break;
            case 'weixin':
                $url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid={$this->app_id}&secret={$this->app_secret}&code={$this->code}&grant_type=authorization_code";
                //返回示例
                /*{
                "access_token":"ACCESS_TOKEN",
                "expires_in":7200,
                "refresh_token":"REFRESH_TOKEN",
                "openid":"OPENID",
                "scope":"SCOPE"
                }*/
                break;
            case 'weibo':
                $url = "https://api.weibo.com/oauth2/access_token?client_id={$this->app_id}&client_secret={$this->app_secret}&grant_type=authorization_code&redirect_uri={$redirect_uri}&code={$this->code}";//新浪微博
                $post_data = [];
                return $this->post($url, $post_data);//撒币制杖
                //返回示例
                /*{
                    "access_token": "SlAV32hkKG",
                    "remind_in": 3600,
                    "expires_in": 3600,
                    "uid":"12341234"
                }*/
                break;

            default:

                break;
        }
        if ($true) {
            $res_access_token = $this->get_contents($url);
            if ($this->type == 'qq' && strpos($res_access_token, "access_token") !== false) {
                $token_result = ['access_token' => explode('=', explode('&', $res_access_token)[0])[1]];
            } else {
                $token_result = json_decode($res_access_token ?: '{}', true);
            }
            $access_token = !empty($token_result['access_token']) ? $token_result['access_token'] : '';
            $this->access_token = $access_token;
            return $access_token;
        } else {
            return $this->get_contents($url);
        }
    }

    /**
     * post
     * post方式请求资源
     * @param string $url 基于的baseUrl
     * @param array $keysArr 请求的参数列表
     * @param int $flag 标志位
     * @return string           返回的资源内容
     */
    public function post($url, $keysArr, $flag = 0)
    {

        $ch = curl_init();
        if (!$flag) curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($ch, CURLOPT_POST, TRUE);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $keysArr);
        curl_setopt($ch, CURLOPT_URL, $url);
        $ret = curl_exec($ch);

        curl_close($ch);
        return $ret;
    }

    /**
     * get_contents
     * 服务器通过get请求获得内容
     * @param string $url 请求的url,拼接后的
     * @return string           请求返回的内容
     */
    public function get_contents($url)
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($ch, CURLOPT_URL, $url);
        $response = curl_exec($ch);
        curl_close($ch);

        //-------请求为空
        if (empty($response)) {
            return '{}';
        }

        return $response;
    }

    /**
     * 获取openid
     * @return string openid
     */
    public function getOpenid()
    {
        $res_access_token = $this->getAccessToken(false);
        if ($this->type == 'qq' && strpos($res_access_token, "access_token") !== false) {
            $access_token = ['access_token' => explode('=', explode('&', $res_access_token)[0])[1]];
        } else {
            $access_token = json_decode($res_access_token ?: '{}', true);
        }
        $openid = '';
        if (isset($access_token['access_token'])) {
            $this->access_token = $access_token['access_token'];
            switch ($this->type) {
                case 'qq':
                    $url = "https://graph.qq.com/oauth2.0/me?access_token={$access_token['access_token']}";
                    // 返回示例...
                    // callback( {"client_id":"101406183","openid":"6C611CBE0C72F765572AE2472C9B59A4"} );
                    $result = $this->get_contents($url);
                    if (strpos($result, "callback") !== false) {
                        $lpos = strpos($result, "(");
                        $rpos = strrpos($result, ")");
                        $result = json_decode(substr($result, $lpos + 1, $rpos - $lpos - 1), true);
                        $openid = isset($result['openid']) ? $result['openid'] : '';
                    }
                    break;
                case 'weixin':
                    return $access_token['openid'];
                    break;
                case 'weibo':
                    return $access_token['uid'];
                    /*$url = "https://api.weibo.com/oauth2/get_token_info?access_token={$access_token['access_token']}";
                    //返回示例
                    {
                        "uid": 1073880650,
                        "appkey": 1352222456,
                        "scope": null,
                        "create_at": 1352267591,
                        "expire_in": 157679471
                    }
                    $result = $this->get_contents($url);
                    $openid = isset($result['uid'])?$result['uid']:'';*/
                    break;

                default:

                    break;
            }
        }
        return $openid;
    }
}

The usage method is as follows:

//第三方登录界面处理
public function actionLoginByOpenid(){
    Yii::$app->response->format= Response::FORMAT_HTML;
    $params = Yii::$app->request->get();
    $oauth = new OauthLogin($params);
    if(empty($params['code'])){
        $url = $oauth->getOauthUrl();
        return $this->redirect($url);
    }else{
        //微信代理跳转处理
        if(isset($params['redirect']) && $params['redirect'] != $oauth->server){
            $proxy = $oauth->proxy;
            $server = $params['redirect'];
            return $this->redirect(str_replace($proxy, $server, Url::current(['redirect'=>null], 'http')));
        }
        $openid = $oauth->getUuid();
        if (!$openid) {
            //失败处理TODO
        } else {
            //成功处理TODO
        }
        
    }
}

The specific process (qq as an example) is as follows:
1. User Click the QQ login icon and access the link http://app.maxiye.cn/site/login-by-openid?type=qq;
2. The server processes to obtain the QQ authorization link and redirect ;
3.QQ adds the code parameter (Authorization Code) in the callback address, callbackhttp://app.maxiye.cn/site/login-by-openid?type=qq&state=4a78***&code =1CA8DF***;
4. The server verifies the state according to the code parameter, obtains the access_token, then obtains the unionid (uid), and processes the result.

Related recommendations:

Add a third-party login PHP version to the website

##php QQ third-party login SDK program code_PHP tutorial

Sina Weibo Third Party Login