基于内部数组键值排序数组

Question

我有一个如下所述的数组

Array
(
[6] => Array
    (
        [name] => Extras
        [total_products] => 0
        [total_sales] => 0
        [total_affiliation] => 0
    )

[5] => Array
    (
        [name] => Office Products
        [total_products] => 7
        [total_sales] => 17
        [total_affiliation] => 8
    )

[1] => Array
    (
        [name] => Hardware Parts
        [total_products] => 6
        [total_sales] => 0
        [total_affiliation] => 0
    )

)

现在,订单是:额外,办公用品,硬件零件

我想按顺序排序主数组,它是按顺序排列的内部数组的total_sales

所以订单将是:办公用品,附加产品,硬件零件

任何帮助家伙

Answer 1

PHP 5.3:

usort($array, function ($a, $b) { return $b['total_sales'] - $a['total_sales']; });

PHP 5.2-:

usort($array, create_function('$a,$b', 'return $b["total_sales"] - $a["total_sales"];'));