Array
(
    [0] => Warning! Number of check  in != check out times.
    [1] => Array
        (
            [0] => stdClass Object
                (
                    [booking_id] => 2578
                    [booking_date] => 0000-00-00 00:00:00
                    [approved] => 1
                )

            [1] => stdClass Object
                (
                    [booking_id] => 2578
                    [booking_date] => 2023-02-15 16:00:01
                    [approved] => 1
                )

        )

    [2] => 1
)

Array
(
    [0] => Warning! Number of check  in != check out times.
    [1] => Array
        (
            [0] => stdClass Object
                (
                    [booking_id] => 2576
                    [booking_date] => 0000-00-00 00:00:00
                    [approved] => 1
                )

            [1] => stdClass Object
                (
                    [booking_id] => 2576
                    [booking_date] => 2023-02-11 00:00:01
                    [approved] => 1
                )

        )

    [2] => 1
)

Array
(
    [0] => Warning! Number of check  in != check out times.
    [1] => Array
        (
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                (
                    [booking_id] => 2574
                    [booking_date] => 0000-00-00 00:00:00
                    [approved] => 1
                )

            [1] => stdClass Object
                (
                    [booking_id] => 2574
                    [booking_date] => 2023-02-10 16:00:01
                    [approved] => 1
                )

        )

    [2] => 1
)