百度api根据ip获取省市区

$ip = $_SERVER['REMOTE_ADDR'];
        // $ip = '36.5.106.8';

        $ak = "你的百度APIAK";
        $url = "http://api.map.baidu.com/location/ip?ak=$ak&ip=$ip&coor=bd09ll";
        $re = file_get_contents($url);
        $re = json_decode($re);