3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [1, [2, 3]]; $array[1][1] = &$array; json_encode($array); echo json_last_error_msg() . ', ' . json_last_error ();
Output for git.master, git.master_jit, rfc.property-hooks
Recursion detected, 6

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:
50.14 ms | 405 KiB | 5 Q