如何对多维数组

时间:2015-12-30 11:27:52

标签: php

我有以下数组:

Array
(
[0] => Array
    (
        [days] => Wed
        [count] => 0
    )

[1] => Array
    (
        [days] => Tue
        [count] => 0
    )

[2] => Array
    (
        [days] => Mon
        [count] => 1
    )

[3] => Array
    (
        [days] => Sun
        [count] => 0
    )

我想对它进行排序,所以看起来像这样:

Array
(
    [3] => Array
        (
            [days] => Sun
            [count] => 0
        )

    [2] => Array
        (
            [days] => Mon
            [count] => 1
        )

    [1] => Array
        (
            [days] => Tue
            [count] => 0
        )

    [0] => Array
        (
            [days] => Wed
            [count] => 0
        )

任何人都可以帮我这么做吗?

5 个答案:

答案 0 :(得分:1)

usort($myArray, function($a, $b) {
    return $a['days'] - $b['days']; // your operation for checking value 
});

答案 1 :(得分:1)

尝试usort:如果您仍然使用PHP 5.2或更早版本,则必须首先定义排序功能:

function sortByOrder($a, $b) {
    return $a['days'] - $b['days'];
}

usort($myArray, 'sortByOrder');

从PHP 5.3开始,您可以使用匿名函数:

usort($myArray, function($a, $b) {
    return $a['days'] - $b['days'];
});

最后,使用PHP 7,您可以使用"太空飞船运营商":

usort($myArray, function($a, $b) {
    return $a['days'] <=> $b['days'];
});

答案 2 :(得分:1)

function compareOrder($a, $b)
    {
      return $a['days'] - $b['days'];
    }

    usort($array, 'compareOrder');

答案 3 :(得分:1)

以下php函数可以提供帮助:

bool array_multisort ( array &$array1 [, mixed $array1_sort_order = SORT_ASC [, mixed $array1_sort_flags = SORT_REGULAR [, mixed $... ]]] )

答案 4 :(得分:0)

可能会帮助你

usort($inputArray, function($first, $second) {
    return $first['days'] - $second['days']; 
});