3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $wat = "wat"; $wat[2] = z; print $wat;
Output for 7.2.0 - 7.3.0rc4
Warning: Use of undefined constant z - assumed 'z' (this will throw an Error in a future version of PHP) in /in/vpW10 on line 3 waz
Output for 4.3.0 - 7.1.20
Notice: Use of undefined constant z - assumed 'z' in /in/vpW10 on line 3 waz