Online PHP editor | refs for lGiPH

<?php interface A {} interface B {} interface C {} interface AB extends A, B {} interface AC extends A, C {} interface BC extends B, C {} interface ABC extends AB, AC, BC {} $o = new class implements ABC {}; var_dump($o instanceof A); var_dump($o instanceof B); var_dump($o instanceof C); var_dump($o instanceof AB); var_dump($o instanceof ABC);