3v4l.org

run code in 300+ PHP versions simultaneously
<?php $source = ["a" => 1, "b" => 2, "c" => 3]; $input = ["d" => 4, "b" => 10]; $new = $source + ($source + $input); print_r($new);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [a] => 1 [b] => 2 [c] => 3 [d] => 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:
30.1 ms | 405 KiB | 5 Q