Online PHP editor | vld for 5oNs4

<?php class ParentClassBackCompat { public function walk($param1, $param2) {} } class ChildClassBackCompat extends ParentClassBackCompat { function walk($param1, $param2, ...$spread) {} } class ParentClass { public function walk($param1, $param2, ...$spread) {} } class ChildClass extends ParentClass { function walk($param1, $param2, $param3, ...$spread) {} }