PHP数组按唯一值分组

Question

假设我有一个数组，其中所有内容均按TemplateID值排序：

Array
(
    [Template 1] => Array
        (
            [0] => Array
                (
                    [CustomerID] => 1
                    [TemplateID] => Template 1
                    [ScheduledTime] => 2019-08-30 10:01:00


                )

            [1] => Array
                (
                    [CustomerID] => 2
                    [TemplateID] => Template 1
                    [ScheduledTime] => 2019-08-30 10:02:00


                )

            [2] => Array
                (
                    [CustomerID] => 3
                    [TemplateID] => Template 1
                    [ScheduledTime] => 2019-08-30 10:03:00


                )

        )

    [Template2] => Array
        (
            [3] => Array
                (
                    [CustomerID] => 4
                    [TemplateID] => Template2
                    [ScheduledTime] => 2019-07-30 10:02:00


                )

        )

)

如何修改数组，以便ScheduledTime的所有唯一值都是每个TemplateID的子元素？

我实质上是在尝试为所有具有相同TemplateID但具有不同ScheduledTime的组创建一个组：

Array
(
[Template 1] => Array (
[2019-08-30 10:01:00] => Array (
    [0] => Array (
        [CustomerID] => 1
        [TemplateID] => Template 1
        [ScheduledTime] => 2019-08-30 10:01:00
        )
    [1] => Array (
        [CustomerID] => 2
        [TemplateID] => Template 1
        [ScheduledTime] => 2019-08-30 10:01:00
        )
    )
[2019-08-30 10:03:00] => Array (
    [0] => Array (
        [CustomerID] => 3
        [TemplateID] => Template 1
        [ScheduledTime] => 2019-08-30 10:03:00
        )
    )
)
[Template2] => Array (
[2019-07-30 10:02:00] => Array (
    [0] => Array (
        [CustomerID] => 4
        [TemplateID] => Template2
        [ScheduledTime] => 2019-07-30 10:02:00
        )
    )
)
)

Answer 1

我确实不明白您想要什么，但是如果您想使2数组变为1并过滤唯一值，也许可以使用函数

  

array_merge

您可以see here for the example