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<?php var_dump(array_keys(json_decode(json_encode(array("foo\0bar" => 'xyz')), true)), json_encode(array("foo\0bar" => 'xyz')));
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { [0]=> string(7) "foobar" } string(22) "{"foo\u0000bar":"xyz"}"

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