3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [['key' => 5], ['key' => 6], ['key' => 7]]; array_walk_recursive($array, function(&$item) {null;}); $result = array_column($array, null, 'key'); var_dump($result);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [5]=> array(1) { ["key"]=> int(5) } [6]=> array(1) { ["key"]=> int(6) } [7]=> array(1) { ["key"]=> int(7) } }

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:
130.21 ms | 405 KiB | 5 Q