按列值对多维数组的每个子数组进行排序

Question

我有以下数组，我想按 value 对子数组进行排序。

[
    'bwin' => [
        ['bookie' => 'bwin', 'id_bookie' => 178537, 'value' => 6.00, 'bet' => 1],
        ['bookie' => 'bwin', 'id_bookie' => 178537, 'value' => 1.45, 'bet' => 2],
        ['bookie' => 'bwin', 'id_bookie' => 178537, 'value' => 4.50, 'bet' => 'x']
    ],
    'NordicBet' => [
        ['bookie' => 'NordicBet', 'id_bookie' => 201581, 'value' => 5.75, 'bet' => 1],
        ['bookie' => 'NordicBet', 'id_bookie' => 201581, 'value' => 1.50, 'bet' => 2],
        ['bookie' => 'NordicBet', 'id_bookie' => 201581, 'value' => 4.30, 'bet' => 'x']
    ],
    'Canbet' => [
        ['bookie' => 'Canbet', 'id_bookie' => 176582, 'value' => 5.60, 'bet' => 1],
        ['bookie' => 'Canbet', 'id_bookie' => 176582, 'value' => 1.56, 'bet' => 2],
        ['bookie' => 'Canbet', 'id_bookie' => 176582, 'value' => 3.80, 'bet' => 'x']
    ],
    'Expekt' => [
        ['bookie' => 'Expekt', 'id_bookie' => 235615, 'value' => 5.60, 'bet' => 1],
        ['bookie' => 'Expekt', 'id_bookie' => 235615, 'value' => 1.50, 'bet' => 2],
        ['bookie' => 'Expekt', 'id_bookie' => 235615, 'value' => 4.25, 'bet' => 'x']
    ],
    'StanJames' => [
        ['bookie' => 'StanJames', 'id_bookie' => 243649, 'value' => 5.50, 'bet' => 1],
        ['bookie' => 'StanJames', 'id_bookie' => 243649, 'value' => 1.53, 'bet' => 2],
        ['bookie' => 'StanJames', 'id_bookie' => 243649, 'value' => 4.00, 'bet' => 'x']
    ],
    'Gamebookers' => [
        ['bookie' => 'Gamebookers', 'id_bookie' => 203620, 'value' => 5.00, 'bet' => 1],
        ['bookie' => 'Gamebookers', 'id_bookie' => 203620, 'value' => 1.50, 'bet' => 2],
        ['bookie' => 'Gamebookers', 'id_bookie' => 203620, 'value' => 4.25, 'bet' => 'x']
    ],
    'Tipp3' => [
        ['bookie' => 'Tipp3', 'id_bookie' => 292604, 'value' => 4.10, 'bet' => 1],
        ['bookie' => 'Tipp3', 'id_bookie' => 292604, 'value' => 1.50, 'bet' => 2],
        ['bookie' => 'Tipp3', 'id_bookie' => 292604, 'value' => 3.40, 'bet' => 'x']
    ]
];

这是未排序的数组输出，但我想对行为 2 的数组进行排序，但行会发生变化，有时我必须对行为 x 或 1 的位置进行排序。

Answer 1

迭代集合并通过引用修改行。
调用 usort() 按 value 列值对子集进行排序。

代码：(演示)

foreach ($array as &$row) {
    usort($row, fn($a, $b) => $b['value'] <=> $a['value']);
}
var_export($array);

Answer 2

您可以使用 usort。这是一个小片段。在此功能中您几乎可以做您想做的事情。

function sorting_function($x, $y)
{
    if ($x['value'] == $y['value'])
        return 0;
    else if ($x['value'] < $y['value'])
        return -1;
    else
        return 1;
}

usort($table_array, 'sorting_function');