3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; $b = [&$a]; $c = $b; unset($a); // <-- $b[0] = 2; echo "$b[0] $c[0]"; // 2 1
Output for git.master, git.master_jit, rfc.property-hooks
2 1

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:
64.35 ms | 405 KiB | 5 Q