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<?php Enum Val: string { case Bar = 'bar'; case Baz = 'baz'; } class A { public function foo(string $s) { print $s; } } class B extends A { public function foo(string|Val $s) { if (is_string($s)) { print $s; } else { print $s->value; } } } $b = new B(); $b->foo('beep'); $b->foo(Val::Baz);
Output for git.master_jit, git.master
beepbaz

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