使用array_multisort对多维数组进行排序

问题描述：

我有这个数组

Array
(
    [0] => Array
        (
            [brand] => blah blah
            [location] => blah blah
            [address] => blah blah
            [city] => blah blah
            [state] => CA
            [zip] => 90210
            [country] => USA
            [phone] => 555-1212
            [long] => -111
            [lat] => 34
            [distance] => 3.08
        )
    [1] => Array
        (
            [brand] => blah blah
            [location] => blah blah
            [address] => blah blah
            [city] => blah blah
            [state] => CA
            [zip] => 90210
            [country] => USA
            [phone] => 555-1212
            [long] => -111
            [lat] => 34
            [distance] => 5
        )
.
.
.

}

我希望能够按距离对散列中的数组进行排序.

I want to be able to sort the arrays in the hash by distance.

答

您需要先提取所有距离，然后将距离和数据都传递给函数.如 array_multisort 文档中的示例3所示.

You need to extract all the distances first, then pass both the distance and the data to the function. As shown in example 3 in the array_multisort documentation.

foreach ($data as $key => $row) {
    $distance[$key] = $row['distance'];
}

array_multisort($distance, SORT_ASC, $data);

这假设您首先要最短的距离，否则将SORT_ASC更改为SORT_DESC

This assumes you want the shortest distances first, otherwise change the SORT_ASC to SORT_DESC

使用array_multisort对多维数组进行排序

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