按多个字段对数组进行排序

Question

在我的后端，我有一些代码处理团队用于循环赛小组赛，最后团队以数组形式返回并包含比赛 results/stats 等

我有以下数组，我想按以下顺序按两个字段排序：points (desc), round_difference (desc).

最终的正确顺序是：TeamOne、TeamThree、TeamTwo。

我将如何处理这种格式的数组？有可能吗？我查看了 array_multisort() 但是我的数组 keys/structure 总体上有点 "odd" 与我在页面上找到的其他代码示例相比我很困惑。

希望有人能帮助我。

Array
(
    [1] => Array
        (
            [1] => Array
                (
                    [id] => 1
                    [group] => 1
                    [name] => TeamOne
                    [tag] => One
                    [matches] => Array
                        (
                            [played] => 1
                            [won] => 0
                            [ot_won] => 1
                            [ot_lost] => 0
                            [lost] => 0
                            [round_difference] => 3
                            [points] => 2
                        )

                )

            [238] => Array
                (
                    [id] => 238
                    [group] => 1
                    [name] => TeamTwo
                    [tag] => Two
                    [matches] => Array
                        (
                            [played] => 0
                            [won] => 0
                            [ot_won] => 0
                            [ot_lost] => 0
                            [lost] => 0
                            [round_difference] => 0
                            [points] => 0
                        )

                )

            [14] => Array
                (
                    [id] => 14
                    [group] => 1
                    [name] => TeamThree
                    [tag] => Three
                    [matches] => Array
                        (
                            [played] => 1
                            [won] => 0
                            [ot_won] => 0
                            [ot_lost] => 1
                            [lost] => 0
                            [round_difference] => -3
                            [points] => 1
                        )
                )
        )

Answer 1

尝试 uasort() 并像这样比较键：

uasort($arr[1],function($a,$b){
    # If the points are more/less right off the bat, return results
    if($a['matches']['points'] < $b['matches']['points'])
        return true;
    # If they are the same
    elseif($a['matches']['points'] == $b['matches']['points'])
        # Compare round_difference sort by that
        return ($a['matches']['round_difference'] < $b['matches']['round_difference']);
});

因此，排序如下：

$arr    =   array(
    1 => array(
        1 => array(
                'id' => 1,
                'group' => 1,
                'name' => 'TeamOne',
                'tag' => 'One',
                'matches' => array(
                        'played' => 1,
                        'won' => 0,
                        'ot_won' => 1,
                        'ot_lost' => 0,
                        'lost' => 0,
                        'round_difference' => 3,
                        'points' => 2
                    )

            ),
        238 => array
            (
                'id' => 238,
                'group' => 1,
                'name' => 'TeamTwo',
                'tag' => 'Two',
                'matches' => array(
                        'played' => 0,
                        'won' => 0,
                        'ot_won' => 0,
                        'ot_lost' => 0,
                        'lost' => 0,
                        'round_difference' => 0,
                        'points' => 0,
                    )

            ),
        14 => array
            (
                'id' => 14,
                'group' => 1,
                'name' => 'TeamThree',
                'tag' => 'Three',
                'matches' => array
                    (
                        'played' => 1,
                        'won' => 0,
                        'ot_won' => 0,
                        'ot_lost' => 1,
                        'lost' => 0,
                        'round_difference' => '-3',
                        'points' => 1,
                    )

            ),
        17 => array
            (
                'id' => 17,
                'group' => 1,
                'name' => 'TeamFive',
                'tag' => 'Five',
                'matches' => array
                    (
                        'played' => 1,
                        'won' => 0,
                        'ot_won' => 0,
                        'ot_lost' => 1,
                        'lost' => 0,
                        'round_difference' => '-3',
                        'points' => 2,
                    )

            )
        )
    );

给你：

按多个字段对数组进行排序

Sorting an array by multiple fields

php

arrays

array-multisort