Question

我想使用php对数据库行（数组）进行2次排序。首先排序一列，然后在第一排序安排中排序第二种。

我在$ result

中存储了一行

Array
(
    [0] => Array
        (
            [brand] => nike
            [product] => 1020
        )
    [1] => Array
        (
            [brand] => adidas
            [product] => 1008
        )
    [2] => Array
        (
            [brand] => nike
            [product] => 1010
        )
    [3] => Array
        (
            [brand] => adidas
            [product] => 1001
        )
    [4] => Array
        (
            [brand] => nike
            [product] => 1018
        )
}

我首先排序品牌，订单没有必要，但我只需要组合在一起，我收到一个排序结果，如

Array
(
    [4] => Array
        (
            [brand] => nike
            [product] => 1018
        )
    [0] => Array
        (
            [brand] => nike
            [product] => 1020
        )
    [2] => Array
        (
            [brand] => nike
            [product] => 1010
        )
    [1] => Array
        (
            [brand] => adidas
            [product] => 1008
        )
    [3] => Array
        (
            [brand] => adidas
            [product] => 1001
        )
}

现在我需要按行键按升序排序，但在每个品牌中，我想要的结果看起来像这样

Array
(
    [0] => Array
        (
            [brand] => nike
            [product] => 1020
        )
    [2] => Array
        (
            [brand] => nike
            [product] => 1010
        )
    [4] => Array
        (
            [brand] => nike
            [product] => 1018
        )
    [1] => Array
        (
            [brand] => adidas
            [product] => 1008
        )
    [3] => Array
        (
            [brand] => adidas
            [product] => 1001
        )
}

我设法实现了这样的结果

$result = original row unaltered/sorted

//create brand array for column data also preserving row key

foreach($rows as $array => $row)
{
    $brand[$array] = $row['brand'];
}

//sort_natural here irrelevant, this is just to group together brands

arsort($brand, SORT_NATURAL);

$brand_count = array_count_values($brand);
$unique_brands = array_unique($brand);

//I separate the brand array by each brand, whilst also maintaining row keys, and put them in a multidimensional array

foreach($unique_brands as $key => $value)
{
       $i = 1;
       while($i <= $brand_count[$value])
       {
            $sorted_brands[$value][key($brand)] = current($brand);
            next($brand);
            $i++;
       }
}

//sort row keys we preserved which represent the original row ascendingly

foreach($sorted_brands as $key => $value)
    ksort($sorted_brands[$key], SORT_ASC);

//now I put all this back into 1 array

foreach($sorted_brands as $multi)
    foreach($multi as $key => $value)
        $final[$key] = $value;

现在这给我们留下了结果

Array
(
    [0] => nike
    [2] => nike
    [4] => nike
    [1] => adidas
    [3] => adidas
)

我现在使用这些键为订单创建一个新数组，并引用旧的原始数组来加载相应的值

foreach($final as $key => $value)
    $complete[$key] = $result[$key];

这会产生预期的结果，但是说到这一切，我想知道它们是否是一种更简单，更简单的方法来实现这一点，我尝试使用诸如array_multisort，array_column，array_values和其他一些函数实现这一结果。无法到达任何地方。

提前感谢您的建议/帮助。

Answer 1

因为您的数据行具有相同的结构和大小，所以您只需调用sort()（Demo）

sort($array);
var_export($array);

这将按行先按brand值，然后按product值将行按字母顺序排列。

多次排序数据库行

1 个答案: