按 a desc 和 b asc 排序 - array(key => array(a, b)

Question

我有一个这样的数组：

$array = array($team => array('points' => x, 'runs' => y))

我汇总积分并与同一支球队一起跑步，结果是这样的：

[team1] => Array
    (
        [points] => 12
        [runs] => 1
    )

[team2] => Array
    (
        [points] => 11
        [runs] => 3
    )

[team3] => Array
    (
        [points] => 11
        [runs] => 2
    )

[team4] => Array
    (
        [points] => 8
        [runs] => 3
    )

我想通过运行 DESC 和点 ASC 对其进行排序。 变成这样：

[team4] => Array
    (
        [points] => 8
        [runs] => 3
    )
[team2] => Array
    (
        [points] => 11
        [runs] => 3
    )
[team3] => Array
    (
        [points] => 11
        [runs] => 2
    )
[team1] => Array
    (
        [points] => 12
        [runs] => 1
    )

Answer 1

您可以将uasort 与自定义比较功能一起使用（为了保持密钥完整，您可以使用usort）：

uasort($teamArray, function($first, $second) {
    // first preference to points
    if ($first['points'] < $second['points']) return -1;
    if ($first['points'] > $second['points']) return 1;

    // points are equal, compare runs in descending order
    if ($first['runs'] > $second['runs']) return -1;
    if ($first['runs'] < $second['runs']) return 1;

    // both points and runs are equal
    return 0;
});

print_r($teamArray);