PHP排序数组通过子数组值 [英] PHP Sort Array By SubArray Value

问题描述

我有数组的下structue：

 阵列
        （
            [0] =＆GT;排列
                （
                    [configuration_id] =＆GT; 10
                    [ID] =＆GT; 1
                    [OPTIONNUMBER] =＆GT; 3
                    [optionActive] =＆GT; 1
                    [LASTUPDATED] =＆GT; 2010-03-17 15点44分十二秒
                ）            [1] =＆GT;排列
                （
                    [configuration_id] =＆GT; 9
                    [ID] =＆GT; 1
                    [OPTIONNUMBER] =＆GT; 2
                    [optionActive] =＆GT; 1
                    [LASTUPDATED] =＆GT; 2010-03-17 15点44分十二秒
                ）            [2] =＆GT;排列
                （
                    [configuration_id] =＆GT; 8
                    [ID] =＆GT; 1
                    [OPTIONNUMBER] =＆GT; 1
                    [optionActive] =＆GT; 1
                    [LASTUPDATED] =＆GT; 2010-03-17 15点44分十二秒
                ）
    ）
 

什么订单是最好的方式排列，以增量的方式基础上，OPTIONNUMBER？

因此​​，结果如下：

 阵列
        （
            [0] =＆GT;排列
                （
                    [configuration_id] =＆GT; 8
                    [ID] =＆GT; 1
                    [OPTIONNUMBER] =＆GT; 1
                    [optionActive] =＆GT; 1
                    [LASTUPDATED] =＆GT; 2010-03-17 15点44分十二秒
                ）            [1] =＆GT;排列
                （
                    [configuration_id] =＆GT; 9
                    [ID] =＆GT; 1
                    [OPTIONNUMBER] =＆GT; 2
                    [optionActive] =＆GT; 1
                    [LASTUPDATED] =＆GT; 2010-03-17 15点44分十二秒
                ）            [2] =＆GT;排列
                （
                    [configuration_id] =＆GT; 10
                    [ID] =＆GT; 1
                    [OPTIONNUMBER] =＆GT; 3
                    [optionActive] =＆GT; 1
                    [LASTUPDATED] =＆GT; 2010-03-17 15点44分十二秒
                ）
    ）
 

解决方案

使用 usort 。

 函数cmp_by_optionNumber（$ A，$ B）{
  返回$一个[OPTIONNUMBER]  -  $ B [OPTIONNUMBER];
}...usort（$阵列cmp_by_optionNumber）;
 

I've got the following structue of array:

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
                )
    )

What's the best way for order the array, in an incremental way based on the optionNumber?

So the results look like:

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
                )
    )

解决方案

Use usort.

function cmp_by_optionNumber($a, $b) {
  return $a["optionNumber"] - $b["optionNumber"];
}

...

usort($array, "cmp_by_optionNumber");

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