使用php在第5维值中按日期排序5维数组？

Question

我需要使用日期对数组进行排序,但问题是第一个数组在键中存储该值,added_date而第二个数组使用键date_added.

如何根据日期对其进行排序(首先是新元素)？

该数组具有以下结构:

[0] => Array
    (
        [data] => Array
            (
                [0] => Array
                    (
                        [media] => upcomingEvents_1214_1429325758.jpeg
                        [reference] => upcomingEvents
                        [added_date] => 2015-04-18 08:26:00
                        [type] => image/jpeg
                    )

                [1] => Array
                    (
                        [media] => upcomingEvents_1214_1429325809.jpeg
                        [reference] => upcomingEvents
                        [added_date] => 2015-04-18 08:26:51
                        [type] => image/jpeg
                    )

                [2] => Array
                    (
                        [media] => diary_1214_1434190391.jpeg
                        [reference] => diary
                        [added_date] => 2015-06-13 15:43:11
                        [type] => image/jpeg
                    )

            )

        [identifier] => media
    )
 [1] => Array
    (
        [data] => Array
            (
                [0] => Array
                    (
                        [media] => image.jpg
                        [media_thumb] => 
                        [couple_id] => 312
                        [date_added] => 2015-06-22 08:38:09
                        [chat_type] => image/jpeg
                    )

                [1] => Array
                    (
                        [media] => 1432787219556.jpg
                        [media_thumb] => 
                        [couple_id] => 312
                        [date_added] => 2015-06-22 17:45:45
                        [chat_type] => image/jpeg
                    )

                [2] => Array
                    (
                        [media] => 1436160762565.jpg
                        [media_thumb] => 
                        [couple_id] => 312
                        [date_added] => 2015-07-06 09:03:27
                        [chat_type] => image/jpeg
                    )

            )

        [identifier] => chat
    )