3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php define("aa", 10); $data = array('id' => 10); echo $data['id']; echo $data["id"]; echo $data[id]; echo aa;
Output for 7.2.0
1010 Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /in/6I7GU on line 6 1010
Output for 4.3.0 - 7.1.10
1010 Notice: Use of undefined constant id - assumed 'id' in /in/6I7GU on line 6 1010