3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $userdata='Tzo0OiJVc2VyIjoyOntzOjI6ImlkIjtpOjU7czo1OiJsb2dpbiI7czo4OiJ1c2VybmFtZSI7fQ%3D%3D'; echo base64_decode(urldecode($userdata)); ?>
based on DnkfO
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0alpha1
O:4:"User":2:{s:2:"id";i:5;s:5:"login";s:8:"username";}