3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(2 ?? 3 ? 4 : 5);
based on HMnOQ
Output for 7.0.0 - 7.2.0
int(4)
Output for 5.3.19 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/LudGI on line 2
Process exited with code 255.