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<?php function demo(callable $callback) { $callback(); } class A { function great($name) { return 'Hello ' . $name; } } demo(new class ("Monde") extends A { public function __invoke() { echo $this->greate('world'); } });
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined method A@anonymous::greate() in /in/PoMh9:16 Stack trace: #0 /in/PoMh9(4): A@anonymous->__invoke() #1 /in/PoMh9(14): demo(Object(A@anonymous)) #2 {main} thrown in /in/PoMh9 on line 16
Process exited with code 255.

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