如何基于值os子数组对数组进行排序

Question

下面是我的数组，我想根据[属性] - ＆gt; [0] - ＆gt; [value]对其进行排序 我怎么能这样做，请指导我。 我尝试使用排序，但如何让它适用于子数组的值。 请指导我新的。

[549246] => Array
        (
            [info] => Array
                (
                    [price] => $281.00
                    [qty] => 10
                    [prod_id] => 549246
                )

            [attributes] => Array
                (
                    [0] => Array
                        (
                            [code] => sizes
                            [label] => Size
                            [value] => 25mg
                            [attribute_id] => 191
                            [option_id] => 26
                        )

                )

        )

    [549245] => Array
        (
            [info] => Array
                (
                    [price] => $75.00
                    [qty] => 10
                    [prod_id] => 549245
                )

            [attributes] => Array
                (
                    [0] => Array
                        (
                            [code] => sizes
                            [label] => Size
                            [value] => 5mg
                            [attribute_id] => 191
                            [option_id] => 24
                        )

                )

        )

Answer 1

尝试以下;

function customer_sort ($a, $b) {

if ((int)$a['attributes'][0]['value'] == (int)$b['attributes'][0]['value']) {
    return 0;
}

return (int)$a['attributes'][0]['value'] > (int)$b['attributes'][0]['value'] ? 1 : -1;

}
uasort($arr, 'customer_sort');