3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Foo\Bar; define('\\Foo\\Bar\\true', 'I AM REDEFINED', true); define('\\Foo\\Bar\\false', 'I AM REDEFINED'); define('\\Foo\\Bar\\null', 'I AM REDEFINED'); var_dump('true:', true, constant('\\Foo\\Bar\\true')); var_dump('false:', false, constant('\\Foo\\Bar\\false')); var_dump('null:', null, constant('\\Foo\\Bar\\null'));
Output for git.master, git.master_jit, rfc.property-hooks
Warning: define(): Argument #3 ($case_insensitive) is ignored since declaration of case-insensitive constants is no longer supported in /in/K32Yp on line 4 Fatal error: Uncaught Error: Undefined constant "Foo\Bar\true" in /in/K32Yp:8 Stack trace: #0 /in/K32Yp(8): constant('\\Foo\\Bar\\true') #1 {main} thrown in /in/K32Yp on line 8
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:
45.25 ms | 401 KiB | 8 Q