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<?php class Foo { public function __toString(): string { return "foo@example.com"; } } $val = new Foo(); var_dump(filter_var($val, FILTER_VALIDATE_EMAIL)); var_dump($val);
Output for git.master, git.master_jit, rfc.property-hooks
string(15) "foo@example.com" object(Foo)#1 (0) { }

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