上传时Wordpress和剪切URL

I m working with wordpress + acf + rest acf and I'm needing to cut some URL.

Instead of having a full URL of image displayed in my JSON :

"intro_img": {
            "url": "http:\/\/127.0.0.1\/app\/wp-content\/uploads\/2016\/10\/intro.png",
        }

I need something much more like :

"intro_img": {
                "url": "uploads/2016/10/intro.png",
            }

What can I do to cut that URL of only for files uploaded ?

Thanks for your help

Check this,

$data = array('intro_img'=>array('url'=>"http:/127.0.0.1/app/wp-content/uploads/2016/10/intro.png"));
$data = json_encode($data, JSON_UNESCAPED_SLASHES);
echo $data;