Online PHP editor | output for YhZrD

<?php abstract class HiddenFactory { protected function __construct() { } final protected static function create() { return new static(); } } class B extends HiddenFactory {} class C extends B { public static function create() { return new static(); } } class A extends HiddenFactory { protected static $recordClass = 'B'; final public static function createB() { $rc = static::$recordClass; return $rc::create(); } } class D extends A { protected static $recordClass = 'C'; } echo get_class(A::createB()); echo get_class(D::createB()); echo get_class(C::create());