MySQL server error report:Array
(
    [0] => Array
        (
            [message] => MySQL Query Error
        )

    [1] => Array
        (
            [sql] => SELECT volume_number , volume_price FROM `OK_ELEC`.`ok_volume_price` WHERE goods_id = '303727' ORDER BY volume_number
        )

    [2] => Array
        (
            [error] => MySQL server has gone away
        )

    [3] => Array
        (
            [errno] => 2006
        )

)
MySQL server error report:Array
(
    [0] => Array
        (
            [message] => MySQL Query Error
        )

    [1] => Array
        (
            [sql] => SELECT volume_number , volume_price FROM `OK_ELEC`.`ok_volume_price` WHERE goods_id = '303727' ORDER BY volume_number
        )

    [2] => Array
        (
            [error] => MySQL server has gone away
        )

    [3] => Array
        (
            [errno] => 2006
        )

    [4] => Array
        (
            [message] => MySQL Query Error
        )

    [5] => Array
        (
            [sql] => DELETE FROM `OK_ELEC`.`ok_sessions_data` WHERE expiry < 1762957554
        )

    [6] => Array
        (
            [error] => MySQL server has gone away
        )

    [7] => Array
        (
            [errno] => 2006
        )

)