Standard input is empty

stdClass Object
(
    [b] => stdClass Object
        (
            [c] => stdClass Object
                (
                    [d] => stdClass Object
                        (
                            [e] => stdClass Object
                                (
                                    [f] => stdClass Object
                                        (
                                            [g] => stdClass Object
                                                (
                                                    [h] => stdClass Object
                                                        (
                                                            [i] => stdClass Object
                                                                (
                                                                    [j] => 
                                                                )

                                                        )

                                                )

                                        )

                                )

                        )

                )

        )

)