Online PHP editor | output for 7VZD5

<?php class BaseClass { private static $queryClass = 'StaticSqlQuery'; public static function setQueryClass($className) { static::$queryClass = $className; } public static function test() { return forward_static_call([static::$queryClass, 'init']); } } class StaticSqlQuery { public static function init() { return 'Original call'; } } echo BaseClass::test(); BaseClass::setQueryClass( get_class(new class extends StaticSQLQuery { public static function init() { return 'My stub'; } }) ); echo BaseClass::test();