3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ ["2" => 6, "5" => 1], ["2" => 1, "5" => 3], ]; $result = []; foreach ($array as $row) { foreach ($row as $k => $v) { if (!isset($result[$k]) || $result[$k] < $v){ $result[$k] = $v; } } } var_export($result);
Output for git.master_jit, git.master, rfc.property-hooks
array ( 2 => 6, 5 => 3, )

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:
51.1 ms | 405 KiB | 5 Q