function add_material($obj) {
            $file_info = array(
   > '/Public/Public/download.png', //圖片片相對於網站根目錄的路徑
                        'content-type' => 'image/png',                   'filelength'   => '11011'                       );
         
            $access_token = $this -> get_access_token();

            $url = "https://api.weixin.qq.com/cgi-bin/material/add_material?access_token={$qq.com/cgi-bin/material/add_material?access_token={$qq.com/cgi-bin/material/add_material?access_token={$qq.com/cgi-bin/material/add_material?access_token={$qq.） ;
         
            $real_path = "{$_SERVER['SERVER_NAME']}{$file_info['filename']}";
##; {$real_path}", 'form-data' => $file_info);

            $result = $this->https_request($url json_decode($result, true);

            if($result['media_id'])
       ($obj,$result['media_id']) ;
            }else {
                return $this->replyText($         
        }
#