Online PHP editor | refs for 65ocv

<?php class A { function a() {echo "a";} } class B { function a() {echo "b";} } class C extends A { function a() {echo "c";} } $b = new B(); var_dump($b instanceof A); $c = new C(); var_dump($c instanceof A); var_dump('bla' instanceof A); var_dump(null instanceof A);