Black technology for multi-dimensional sorting of PHP arrays: implemented using third-party libraries

第三方库ksortRecursive可用于PHP多维数组排序，支持按多个键的升序或降序排序，简化了处理复杂多维数组的排序过程。

Black technology for multi-dimensional sorting of PHP arrays: implemented using third-party libraries

在处理复杂的多维数组时，对它们进行多维排序往往是一个令人头疼的任务。PHP原生函数只能对一维数组排序，无法满足多维排序的需求。这时，我们可以求助于第三方库来简化排序过程。

库推荐：ksortRecursive

ksortRecursive是一个轻量级的PHP库，专门针对多维数组排序设计。它提供了一种简单易用的API，可以快速方便地实现各种多维排序。

安装

使用Composer安装ksortRecursive：

composer require justinwalsh/ksort

用法

使用ksortRecursive对多维数组排序非常简单。以下代码演示如何根据多个键对数组进行多维排序：

use JustinWalsh\KsortRecursive\KsortRecursive;

$arr = [
    [
        'name' => 'John Doe',
        'age' => 50,
        'city' => 'New York'
    ],
    [
        'name' => 'Jane Doe',
        'age' => 40,
        'city' => 'London'
    ],
    [
        'name' => 'Peter Jones',
        'age' => 30,
        'city' => 'Paris'
    ]
];

$sortedArr = KsortRecursive::sortNestedArrayByKey($arr, ['name', 'age', 'city'], true);

print_r($sortedArr);

输出结果：

Array
(
    [0] => Array
        (
            [name] => Jane Doe
            [age] => 40
            [city] => London
        )
    [1] => Array
        (
            [name] => John Doe
            [age] => 50
            [city] => New York
        )
    [2] => Array
        (
            [name] => Peter Jones
            [age] => 30
            [city] => Paris
        )
)

实战案例

在电商网站中，我们需要对商品列表进行多维排序。以下代码演示如何按价格和名称对商品列表排序：

$products = [
    [
        'id' => 1,
        'name' => 'Product 1',
        'price' => 100
    ],
    [
        'id' => 2,
        'name' => 'Product 2',
        'price' => 200
    ],
    [
        'id' => 3,
        'name' => 'Product 3',
        'price' => 150
    ]
];

$sortedProducts = KsortRecursive::sortNestedArrayByKey($products, ['price', 'name'], true);

foreach ($sortedProducts as $product) {
    echo $product['name'] . ' - $' . $product['price'] . '<br>';
}

输出结果：

Product 1 - $100
Product 3 - $150
Product 2 - $200

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