3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = []; var_dump($a['t'] ?? null ?: null);
based on tm0J8
Output for hhvm-3.15.4, 7.0.0 - 7.3.0rc3
NULL
Output for 5.6.0 - 5.6.30
Parse error: syntax error, unexpected '?' in /in/nQBCe on line 5
Process exited with code 255.