3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $k = (string) $_POST['folder_name']; var_dump($k);
Output for 5.3.0 - 7.1.0
Notice: Undefined index: folder_name in /in/E4BQb on line 3 string(0) ""
Output for 4.3.0 - 5.2.17
Notice: Undefined index: folder_name in /in/E4BQb on line 3 string(0) ""