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<?php $obj = new \stdClass; $obj->{"12"} = "foobar"; $arr = ((array)$obj); var_dump($arr, isset($arr["12"])); $arr = get_object_vars($obj); var_dump($arr, isset($arr["12"]));
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { [12]=> string(6) "foobar" } bool(true) array(1) { [12]=> string(6) "foobar" } bool(true)

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