3v4l.org

run code in 300+ PHP versions simultaneously
<?php class test { function register() { if (!function_exists('test_init')) { function test_init() { echo 'Initializing library'.PHP_EOL; } } } } $test = new test; $test->register(); test_init(); ?>
Output for git.master, git.master_jit, rfc.property-hooks
Initializing library

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:
30.23 ms | 401 KiB | 8 Q