3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = 0; var_dump($a ?? 5, $b ?? 5);
Output for 7.0.0 - 7.2.0
int(0) int(5)
Output for 5.3.22 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/VHKe8 on line 4
Process exited with code 255.