<?php

$Json = '{"status":"success","images":"https:\/\/scontent-frt3-1.cdninstagram.com\/v\/t51.2885-19\/","userid":123456789,"kullaniciAdi":"1234"}';

$Json2Array = json_decode($Json, true);

print_r($Json2Array);

Array
(
[status] => success
[images] => https://scontent-frt3-1.cdninstagram.com/v/t51.2885-19/
[userid] => 123456789
[kullaniciAdi] => 1234
)