3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [1 => 'a', 2=> 'b', 3 => 'c']; $b = [1, 3]; var_dump(array_intersect_ukey($a, $b, function ($item, $c) { var_dump($item); var_dump($c); return $item === $c; }));
Output for git.master, git.master_jit, rfc.property-hooks
int(1) int(2) Deprecated: array_intersect_ukey(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/RCZFC on line 5 int(2) int(1) int(2) int(3) int(3) int(2) int(0) int(1) int(1) int(0) int(1) int(0) int(0) int(1) int(2) int(1) int(1) int(2) array(2) { [1]=> string(1) "a" [2]=> string(1) "b" }

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:
49.57 ms | 402 KiB | 8 Q