$result = array();
        $ak = 'GQFu5UG9TgcdSze4FWWku7AsSpvO4T2N';//您的百度地图ak，可以去百度开发者中心去免费申请
        // echo 1;die;
  //=36.666277,117.127513
        $url ="http://api.map.baidu.com/reverse_geocoding/v3/?ak=".$ak."&output=json&coordtype=wgs84ll&location=".$lon.",".$lat;


 
        
        $data = file_get_contents($url);