Online PHP editor | vld for lpJfU

<?php header("Content-type:text/plain; charset=utf-8"); error_reporting(E_ALL); ini_set('display_errors', 1); class A { public function f(array $array) { var_dump($array); } } class B extends A { public function f(A $a, array $b) { var_dump($b); } } $a = new A(); $a->f([1, 2, 3]); $b = new B(); $b->f($a, []);