Question

我目前正在尝试按其totalPoints对多维数组进行排序。每个数组lineupSet都有n个项目。我正在尝试使lineupSet总数最高。我怎样才能最有效地实现？以下是sudocode，因此无法正常工作。不确定如何处理。

代码

totalPoints

所需结果：

public function getHighestTotalPoints($testArray)
{
    if (isset($testArray) && !empty($testArray)) {
        uasort($testArray, function ($a, $b) {
            return $a['lineupSet']['formula']['totalPoints'] <=> $b['lineupSet']['formula']['totalPoints'] ;
        });
        return array_reverse($testArray);
    }
    return null;
}

$testArray = [[
    "lineupSet" => [
        [[
            "formula" => [
                "totalPoints" => 214.61,
            ],
            "name"    => "test1",
        ], [
            "formula" => [
                "totalPoints" => 201.17,
            ],
            "name"    => "test2",
        ]], [
            "formula" => [
                "totalPoints" => 5.01,
            ],
            "name"    => "test3",
        ]],
], [
    "lineupSet" => [
        [[
            "formula" => [
                "totalPoints" => 220.66,
            ],
            "name"    => "test1",
        ], [
            "formula" => [
                "totalPoints" => 214.76,
            ],
            "name"    => "test2",
        ]],
    ],
], [
    "lineupSet" => [
        [[
            "formula" => [
                "totalPoints" => 205.71,
            ],
            "name"    => "test1",
        ], [
            "formula" => [
                "totalPoints" => 204.43,
            ],
            "name"    => "test2",
        ]],
    ],
], [
    "lineupSet" => [
        [[
            "formula" => [
                "totalPoints" => 205.48,
            ],
            "name"    => "test1",
        ], [
            "formula" => [
                "totalPoints" => 203.51,
            ],
            "name"    => "test2",
        ]],
    ],
]];

Answer 1

您可以使用usort根据自定义函数对数组进行排序。此函数确定给定totalPoints的{{1}}：

lineupSet

要对降序进行排序（因此最大总点位于数组的第一个条目中），然后使用排序函数，当第二个值function sum_points($v) { $totalPoints = 0; foreach ($v['lineupSet'] as $lset) { if (isset($lset['formula'])) { $totalPoints += $lset['formula']['totalPoints']; } else { foreach ($lset as $l) { $totalPoints += $l['formula']['totalPoints']; } } } return $totalPoints; }大于第一个值时，该函数将返回一个正数，为负数较小时为数字，相同时为0：

totalPoints

最后，我们使用此函数调用function sort_points($a, $b) { return sum_points($b) - sum_points($a); }并输出数组的第一个元素：

usort

输出：

usort($testArray, 'sort_points');
print_r($testArray[0]);

Demo on 3v4l.org

将多维数组排序几个级别

1 个答案: