3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public readonly int $v; } $a = new A; $b = new ArrayObject($a); $b['v'] = 'hello'; $b['v'] = 'world'; echo $a->v; //"world"
Output for git.master_jit, git.master
world

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:
29.91 ms | 405 KiB | 5 Q