Question

我有一个像下面提到的数组

Array
(
[6] => Array
    (
        [name] => Extras
        [total_products] => 0
        [total_sales] => 0
        [total_affiliation] => 0
    )

[5] => Array
    (
        [name] => Office Products
        [total_products] => 7
        [total_sales] => 17
        [total_affiliation] => 8
    )

[1] => Array
    (
        [name] => Hardware Parts
        [total_products] => 6
        [total_sales] => 0
        [total_affiliation] => 0
    )

)

目前，订单是：附加产品，办公用品，硬件配件

我想按顺序对主数组进行排序，以便按顺序排列内部数组的total_sales

所以订单将是：办公用品，附加产品，硬件零件

任何帮助人员

Answer 1

PHP 5.3：

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

PHP 5.2 - ：

usort($array, create_function('$a,$b', 'return $b["total_sales"] - $a["total_sales"];'));

Answer 2

这是您可以用来进行多维排序的类

注意：您必须拥有PHP5

class MultiDimensionSort
{
    const ASCENDING = 0,DESCENDING = 1;

    public  $sortColumn,$sortType;

    public function __construct($column = 'price', $type = self::ASCENDING)
    {
        $this->column = $column;
        $this->type = $type;
    }

    public function cmp($a, $b)
    {
        switch($this->type)
        {
            case self::ASCENDING:
                return ($a[$this->column] == $b[$this->column]) ? 0 : (($a[$this->column] < $b[$this->column]) ? -1 : 1);
            case self::DESCENDING:
                return ($a[$this->column] == $b[$this->column]) ? 0 :(($a[$this->column] < $b[$this->column]) ? 1 : -1);
            default:
                assert(0); // unkown type
        }
    }
}

就像你有包含上面数组的数组命名摘要一样。你可以按照以下陈述排序。 //假设你的数组变量是$summary

$s = new MultiDimensionSort('total_sales', MultiDimensionSort::DESCENDING); // sort by total_sales

usort($summary, array($s, 'cmp'));
print"<pre>";print_r($summary);

干杯！可能会帮助你

Answer 3

使用自定义功能和usort：

<?php
function custom_sale_sort($a, $b)
{
    if ($a['total_sales'] < $b['total_sales'])
        return 1;
    elseif ($a['total_sales'] == $b['total_sales'])
        return 0;
    else
        return -1;
}

usort($array, 'custom_sale_sort');

如果您需要在另一个方向上排序数组，请在自定义函数中切换(1,-1)值。

基于内部数组键值排序数组

3 个答案: