3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace One { trait foo { static $bar = []; public static function a() { } } } namespace Two { use One\foo as OneFoo; trait bat { use OneFoo; public static function a() { $bar[] = 'qux'; } } } namespace Three { class qux { use \Two\bat; public static function a() { \Two\bat::a(); } } class bing extends qux { } } namespace { error_reporting(32767); \Three\bing::a(); }

preferences:
54.6 ms | 402 KiB | 5 Q