3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $foo = []; //$foo['bar'] = 1; var_dump([$foo['bar'] ?? []]);
based on nAEc2
Output for hhvm-3.18.5 - 3.22.0, 7.1.0 - 7.3.0beta1
array(1) { [0]=> array(0) { } }
Output for 5.6.0 - 5.6.30
Parse error: syntax error, unexpected '?' in /in/pJT55 on line 6
Process exited with code 255.