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<?php class Foo {} class Bar extends Foo {} class Baz {} $foo = new Foo; $bar = new Bar; $baz = new Baz; var_dump([ !($bar instanceof Foo), !(Bar instanceof Foo), !($baz instanceof $foo), ]);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Undefined constant "Bar" in /in/2LuN6:15 Stack trace: #0 {main} thrown in /in/2LuN6 on line 15
Process exited with code 255.

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