3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = [[1, 2], [1, 2]]; print_r(array_unshift($a, [3, 4]));
based on dvAAX
Output for 5.6.0 - 5.6.38, hhvm-3.15.4 - 3.22.0, 7.0.0 - 7.2.12
3