3v4l.org

run code in 300+ PHP versions simultaneously
<?php $A = [3,45,67,8]; $B = [ 1 => [1,6,8], 2 => [5,67,3,4,5,66,6,45], 3 => [55,56,57,58], 4 => [45,80,81,82] ]; foreach ($B as $key => $haystack) { foreach ($haystack as $hay) { $C[$hay][] = $key; } } var_export(array_keys(array_flip((array_merge(...array_intersect_key($C, array_flip($A)))))));
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => 1, 1 => 2, 2 => 4, )

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:
112.23 ms | 405 KiB | 5 Q