php数组排序面试题,PHP按子数组值对数组排序
我有以下數組結構：
Array
(
[0] => Array
(
[configuration_id] => 10
[id] => 1
[optionNumber] => 3
[optionActive] => 1
[lastUpdated] => 2010-03-17 15:44:12
)
[1] => Array
(
[configuration_id] => 9
[id] => 1
[optionNumber] => 2
[optionActive] => 1
[lastUpdated] => 2010-03-17 15:44:12
)
[2] => Array
(
[configuration_id] => 8
[id] => 1
[optionNumber] => 1
[optionActive] => 1
[lastUpdated] => 2010-03-17 15:44:12
)
)
基于，以增量方式對數組進行排序的最佳方法是optionNumber什么？
因此結果如下所示：
Array
(
[0] => Array
(
[configuration_id] => 8
[id] => 1
[optionNumber] => 1
[optionActive] => 1
[lastUpdated] => 2010-03-17 15:44:12
)
[1] => Array
(
[configuration_id] => 9
[id] => 1
[optionNumber] => 2
[optionActive] => 1
[lastUpdated] => 2010-03-17 15:44:12
)
[2] => Array
(
[configuration_id] => 10
[id] => 1
[optionNumber] => 3
[optionActive] => 1
[lastUpdated] => 2010-03-17 15:44:12
)
)
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