3v4l.org

run code in 300+ PHP versions simultaneously
<?php $input_array = array("FirSt" => 1, "SecOnd" => 4); print_r(array_change_key_case($input_array, CASE_UPPER));
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [FIRST] => 1 [SECOND] => 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:
33.99 ms | 401 KiB | 8 Q