3v4l.org

run code in 500+ PHP versions simultaneously
<?php function my_function($hello = 123) { var_dump($hello); } my_function(null); // > null my_function(undefined); // > 123
Output for rfc.property-hooks, git.master, git.master_jit
NULL Fatal error: Uncaught Error: Undefined constant "undefined" in /in/SBibm:9 Stack trace: #0 {main} thrown in /in/SBibm on line 9
Process exited with code 255.

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:
58.93 ms | 2741 KiB | 4 Q