3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $paul = 'paul'; $user = $pierre ?? $paul ?? $jean; echo $user;
based on bLZdY
Output for 7.0.0 - 7.2.0
paul
Output for 5.3.18 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/ZK9WV on line 5
Process exited with code 255.