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<?php Interface foo { public function bar($argument); } class A implements foo { public function bar(string $argument) { return $argument; } } $a = new A(); var_dump($a->bar('foo'));
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of A::bar(string $argument) must be compatible with foo::bar($argument) in /in/cMfng on line 8
Process exited with code 255.

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