private $appid=‘‘;
private $secret=‘‘;
private function getAccessToken() {        // access_token 应该全局存储与更新，以下代码以写入到文件中做示例        $data = S(‘access_token‘);        if ($data[‘expire_time‘] < time()) {            // 如果是企业号用以下URL获取access_token            // $url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$this->appId&corpsecret=$this->appSecret";            $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$this->appid."&secret=".$this->secret;            $res = json_decode($this->http_curl($url),true);            $access_token = $res[‘access_token‘];            if ($access_token) {                $data[‘expire_time‘] = time() + 7000;                $data[‘access_token‘] = $access_token;                S(‘access_token‘,$data);            }        } else {            $access_token = $data[‘access_token‘];        }        return $access_token;    }

 1     public function attention(){ 2         $openid=$_SESSION[‘weinfo‘][‘openid‘]; 3         // 获取公众号的access_token，此access_token不是用户授权后的access_token 4         $accessToken = $this->getAccessToken(); 5         $subscribe_msg = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=".$accessToken."&openid=".$openid; 6         $subscribe_info = $this->http_curl($subscribe_msg); 7         $subscribe_info = json_decode($subscribe_info); 8         if($subscribe_info->subscribe){ 9             $msg[‘status‘]=1;10         }else{11             $msg[‘status‘]=0;12         }13         return $msg;14     }