Question

我已经看了很多关于SO的例子，但是我无法找到解决这个问题的方法。我有一个大型数组，我需要用2个元素对它进行排序。

首先，通过自定义顺序中的优先级字段：S1，S2，S3，S4，S5，D，NS



其次，将数组中的2个字段加在一起。（这一点有效。）

我已经制作了一个排序功能，它将按上述两种方式排序，但是，它在S1-S5之前对D和NS进行排序，因为D首先按字母顺序排列。 - 因此我需要定义一个包含我想要排序的自定义顺序的数组。请任何人帮忙吗？

我使用的功能是：

function compdaily($a, $b) {
    if ($a['Priority'] == $b['Priority']) 
    {
        return ($a['Value1'] + $a['Value2']) < ($b['Value1'] + $b['Value2']);
    }
    return strcmp($a['Priority'], $b['Priority']);
}

然后我以这种方式调用上面的函数：

usort($Array, 'compdaily');

以此顺序显示项目：

Array
(
    [0] => Array
        (
            [SomeID] => 1234
            [Priority] => D
            [Value1] => 250
            [Value2] => 100
        )
    [1] => Array
        (
            [SomeID] => 456
            [Priority] => NS
            [Value1] => 250
            [Value2] => 100
        )
    [2] => Array
        (
            [SomeID] => 124
            [Priority] => S1
            [Value1] => 200
            [Value2] => 200
        )
    [3] => Array
        (
            [SomeID] => 1235
            [Priority] => S1
            [Value1] => 100
            [Value2] => 100
        )
    [4] => Array
        (
            [SomeID] => 1230
            [Priority] => S2
            [Value1] => 250
            [Value2] => 100
        )
    [5] => Array
        (
            [SomeID] => 123495
            [Priority] => S3
            [Value1] => 250
            [Value2] => 100
        )
    [6] => Array
        (
            [SomeID] => 123498
            [Priority] => S3
            [Value1] => 100
            [Value2] => 100
        )
    [7] => Array
        (
            [SomeID] => 12345
            [Priority] => S4
            [Value1] => 250
            [Value2] => 100
        )
)

但是，我按此顺序需要它们：

Array
(
    [0] => Array
        (
            [SomeID] => 124
            [Priority] => S1
            [Value1] => 200
            [Value2] => 200
        )
    [1] => Array
        (
            [SomeID] => 1235
            [Priority] => S1
            [Value1] => 100
            [Value2] => 100
        )
    [2] => Array
        (
            [SomeID] => 1230
            [Priority] => S2
            [Value1] => 250
            [Value2] => 100
        )
    [3] => Array
        (
            [SomeID] => 123495
            [Priority] => S3
            [Value1] => 250
            [Value2] => 100
        )
    [4] => Array
        (
            [SomeID] => 123498
            [Priority] => S3
            [Value1] => 100
            [Value2] => 100
        )
    [5] => Array
        (
            [SomeID] => 12345
            [Priority] => S4
            [Value1] => 250
            [Value2] => 100
        )
    [6] => Array
        (
            [SomeID] => 1234
            [Priority] => D
            [Value1] => 250
            [Value2] => 100
        )
    [7] => Array
        (
            [SomeID] => 456
            [Priority] => NS
            [Value1] => 250
            [Value2] => 100
        )
)

我尝试过使用以下示例：Sort an array by multiple keys in a certain order 但是我无法将其与上述工作结合起来。

Answer 1

不是直接在排序中使用$a['Priority']，而是可以使用查找表来获取实际订单

类似......

$mapp = array('S1'=>1, 'S2'=>2, 'S3'=>3, 'S4'=>4, 'S5'=>5, 'D'=>6, 'NS'=>7);

function compdaily($a, $b) {
    global $mapp;
    ...
    return ($mapp[$a['Priority']] < $mapp[$b['Priority']]);
}

（if语句不需要更改，因为可以直接比较字符串是否相等）

对数组进行排序：首先按定义的顺序排列1个元素，然后排除总共2个其他元素

1 个答案: