php 微信授权登录

  1 <?php
  2 /**
  3  *微信授权实例
  4  */
  5 class ClassName extends AnotherClass
  6 {
  7     /**
  8     * wechat oauth 之后的回调页面
  9     */
 10     public function callback()
 11     {
 12         $this->_globals();
 13         if (!isset($_GET['code']) || !$_GET['code']) {
 14              echo "无效的地址";
 15              exit;
 16         }
 17         if ($_SERVER['HTTP_HOST'] == _WECHAT_OAUTH_DOMAIN) {
 18             //redirect to customer domain
 19             $customDomain = $_GET['state'];
 20             $url = "http://" . $customDomain . $_SERVER["REQUEST_URI"];
 21             header("Location: {$url}");
 22             exit;
 23         }
 24         $wechat = new Wechat($this->client['appid'], $this->client['appsecret']);
 25         $accessToken = $wechat->getAccessToken($_GET['code']);  //获取accessToken
 26         $userInfo = $wechat->getUserInfo($accessToken['access_token'], $accessToken['openid']); //获取用户信息
 27 
 28         $thirdUserMdl = model('CoreUserOpenids');
 29         $filter = array("client_id='{$this->client['id']}'", "utype='wechat'", "openid='{$userInfo['openid']}'");
 30         $res = $thirdUserMdl->getRow($filter);
 31        
 32         $userMdl = model('CoreUsers');
 33         $user = $userMdl->getRow(array("id='{$res['uid']}'"));
 34 
 35         $_SESSION['login_user'] = $user;
 36         $_SESSION['wechat_user'] = $res;
 37 
 38         $targetUrl = empty($_SESSION['target_url']) ? '/' : $_SESSION['target_url'];
 39         header('location:' . $targetUrl);
 40         exit;
 41     }
 42 
 43 
 44     public function getAuthorizeUrl($redirectUri, $scope = 'snsapi_userinfo', $state = '') {
 45         $baseurl = 'https://open.weixin.qq.com/connect/oauth2/authorize';
 46         $params = [
 47            'appid' => $this->appid,
 48            'redirect_uri' => $redirectUri,
 49            'response_type' => 'code',
 50            'scope' => $scope,
 51            'state' => $state,
 52         ];
 53         $url = $baseurl . '?' . http_build_query($params);
 54         return $url;
 55     }
 56 
 57 
 58     /**
 59      * Notes:code 换access_token
 60      * Created by xxg@seabig.cn
 61      * Date: 2020/5/8
 62      * Time: 0:38
 63      */
 64    public function getAccessToken($code) {
 65        $baseurl = 'https://api.weixin.qq.com/sns/oauth2/access_token';
 66        $params = [
 67            'appid' => $this->appid,
 68            'secret' => $this->appsecret,
 69            'code' => $code,
 70            'grant_type' => 'authorization_code',
 71        ];
 72        $url = $baseurl . '?' . http_build_query($params);
 73        $ch = curl_init();
 74        curl_setopt($ch, CURLOPT_URL, $url);
 75        curl_setopt($ch, CURLOPT_HEADER, 0);
 76        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 77        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
 78        curl_setopt($ch, CURLOPT_TIMEOUT, 15);
 79        $res = curl_exec($ch);
 80        curl_close($ch);
 81        $json_obj = json_decode($res, true);
 82        $access_token = $json_obj['access_token'];
 83        $openid = $json_obj['openid'];
 84        $data = array("access_token" =>$access_token , "openid" => $openid);
 85        return $data;
 86    }
 87 
 88     /**
 89      * Notes:获取用户信息
 90      * Created by xxg@seabig.cn
 91      * Date: 2020/5/8
 92      * Time: 0:39
 93      */
 94     public function getUserInfo($access_token,$openid) {
 95        $baseurl = 'https://api.weixin.qq.com/sns/userinfo';
 96        $params = [
 97            'access_token' => $access_token,
 98            'openid' => $openid,
 99            'lang' => 'zh_CN',
100        ];
101        $url = $baseurl . '?' . http_build_query($params);
102        $ch = curl_init();
103        curl_setopt($ch, CURLOPT_URL, $url);
104        curl_setopt($ch, CURLOPT_HEADER, 0);
105        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
106        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
107        curl_setopt($ch, CURLOPT_TIMEOUT, 15);
108        $res = curl_exec($ch);
109        curl_close($ch);
110        //解析json
111        $userinfo = json_decode($res, true);
112        return $userinfo;
113     }
117 }