我的数组是
Array
(
[0] => Array
(
[package] => Bag
[qty] => 10.00
[price] => 19.00
)
[1] => Array
(
[package] => kgs
[qty] => 1.00
[price] => 2.00
)
[2] => Array
(
[package] => Bag
[qty] => 25.00
[price] => 50.00
)
)
我需要根据价格上升值对此数组进行排序。我使用 usort 。我的代码看起来像
usort($array, function ($b, $a) { return $b['price'] - $a['price']; });
然后我得到了结果数组
Array
(
[0] => Array
(
[package] => kgs
[qty] => 1.00
[price] => 2.00
)
[1] => Array
(
[package] => Bag
[qty] => 10.00
[price] => 19.00
)
[2] => Array
(
[package] => Bag
[qty] => 25.00
[price] => 50.00
)
)
但我的实际需求是通过保留键来获得结果。也就是说，
Array
(
[1] => Array
(
[package] => kgs
[qty] => 1.00
[price] => 2.00
)
[0] => Array
(
[package] => Bag
[qty] => 10.00
[price] => 19.00
)
[2] => Array
(
[package] => Bag
[qty] => 25.00
[price] => 50.00
)
)
我该怎么办？请帮帮我。