使用子键值对PHP数组排序 [英] Sorting PHP array using subkey-values

问题描述

我有一个看起来像这样的数组:

I have an array that looks something like this:

Array
(
    [Erik] => Array
    ( 
        [count] => 10
        [changes] => 1
    )
    [Morten] => Array
    (
        [count] => 8
        [changes] => 1
    )
)

现在，数组中的键是我们帮助台系统中技术人员的姓名.我试图根据[count]加[changes]的数量对此进行排序，然后显示它们.我尝试使用 usort ，但随后将数组键替换为索引号.如何排序并保留数组键?

Now, the keys in the array are names of technicians in our Helpdesk-system. I'm trying to sort this based on number of [count] plus [changes] and then show them. I've tried to use usort, but then the array keys are replaced by index numbers. How can I sort this and keep the array keys?

推荐答案

您应该为此使用uasort.

bool uasort(array& $ array，回调 $ cmp_function)

bool uasort ( array &$array , callback $cmp_function )

此函数对数组进行排序，使得 数组索引保持其 与数组元素的相关性 它们与使用 用户定义的比较功能. 主要在排序时使用 实际关联数组 元素顺序很重要.

This function sorts an array such that array indices maintain their correlation with the array elements they are associated with, using a user-defined comparison function. This is used mainly when sorting associative arrays where the actual element order is significant.

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