3v4l.org

run code in 300+ PHP versions simultaneously
<?php Interface Singleton{public static function instance();} if (class_exists('Singleton')) { $reason = 'class already exists'; } else { class Singleton{ static function getInstance(){ return true; } } }
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Cannot declare class Singleton, because the name is already in use in /in/RBgcu on line 7
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:
35.58 ms | 401 KiB | 8 Q