Question

我有下一个multidimensioanl数组（它相当长，但我在这里复制了第一个元素）：

[0] => Array
    (
        [cpt] => Product
        [tax] => Type A
        [year] => 2012
    )

[1] => Array
    (
        [cpt] => Product
        [tax] => Type B
        [year] => 2012
    )

[2] => Array
    (
        [cpt] => Product
        [tax] => Type C
        [year] => 2011
    )

[3] => Array
    (
        [cpt] => Product
        [tax] => Type C
        [year] => 2011
    )

[4] => Array
    (
        [cpt] => Product
        [tax] => Type D
        [year] => 2015
    )

[5] => Array
    (
        [cpt] => Review
        [tax] => Figure
        [year] => 2014
    )

[6] => Array
    (
        [cpt] => Review
        [tax] => Sample
        [year] => 2012
    )

[7] => Array
    (
        [cpt] => Review
        [tax] => Figure
        [year] => 2012
    )

[8] => Array
    (
        [cpt] => Review
        [tax] => Picture based
        [year] => 2015
    )

[9] => Array
    (
        [cpt] => Review
        [tax] => Figure
        [year] => 2012
    )

[10] => Array
    (
        [cpt] => Review
        [tax] => Picture based
        [year] => 2013
    )
[11] => Array
    (
        [cpt] => Template
        [tax] => L
        [year] => 2013
    )

[12] => Array
    (
        [cpt] => Template
        [tax] => L
        [year] => 2015
    )

[13] => Array
    (
        [cpt] => Template
        [tax] => M
        [year] => 2011
    )

[14] => Array
    (
        [cpt] => Template
        [tax] => S
        [year] => 2011
    )

我需要首先按“cpt”值排序，然后按“税”值排序，最后按“年”排序。

问题是“cpt”和“tax”的排序顺序应该是自定义顺序，而不是按字母顺序排列。

好消息是：

数组始终按“cpt”完美排序（尽可能看到）。所以我不关心它的排序。
我只需要应用这些排序更改（首先是“税”） “年”下一个）特定的“cpt”，即“评论”。

这是我的代码，但它无效，因为它也会更改“cpt”顺序。

$sort_tax = array("Sample","Figure","Picture based");
usort($the_array, function ($a, $b) use ($sort_tax) {
    $pos_a = array_search($a['tax'], $sort_tax);
    $pos_b = array_search($b['tax'], $sort_tax);
    $result = $pos_a - $pos_b;
    if ($result == 0) {
        $difference = $a['year'] - $b['year'];
        if ($difference >= 0) {
            $value = 0;
        } else {
            $value = 1;
        }
        return $value;
    } else {
        return $pos_a - $pos_b;
    }
});

有什么想法吗？非常感谢提前！

Answer 1

$array = array();
foreach($array_name as $arr){
  $array['cpt'] = $arr['cpt'];
  $array['tax'] = $arr['tax'];
  $array['year'] = $arr['year'];
} 

array_multisort($array['tax'], SORT_DESC, $array['year'], SORT_ASC,$Your_array_name);

您可以从here

检查array_multisort

有条件地按不同值对多维数组进行排序

1 个答案: