3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Hello { private static $greeting = 'Hello'; private static $initialized = false; private static function initialize() { if (self::$initialized) return; self::$greeting .= ' There!'; self::$initialized = true; } public static function greet() { self::initialize(); echo self::$greeting; } } Hello::greet(); // Hello There!
Output for git.master, git.master_jit, rfc.property-hooks
Hello There!

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:
39.7 ms | 401 KiB | 8 Q