3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = 42; $foo = []; $foo[] = [$a]; $bar = []; $bar[] = [42];
based on RVFX7
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0beta1