3v4l.org

run code in 500+ PHP versions simultaneously
<?php $hash = ['a' => 1, 'b' => 2]; print_r(array_map(function($v, $k) { return "$k: $v";}, $hash, array_keys($hash) )); ?>
Output for git.master_jit, git.master
Array ( [0] => a: 1 [1] => b: 2 )

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

preferences:
39.35 ms | 849 KiB | 4 Q