array_multisort無法正常工作？

Question

我一直都在使用array_multisort，但是這一次在排序時遇到了問題。

我用它來排序多維數組（$數據），但我簡化本例中的問題：

$data = array(6 => 'WEEK 48', 7 => 'WEEK 49', 8 => 'WEEK 47', 9 => 'WEEK 50', 10 => 'WEEK 51'); 

    $sort = array(8 => 201647, 6 => 201648, 7 => 201649, 9 => 201650, 10 => 201651); 

    array_multisort($sort, SORT_ASC, $data); 

    Output: 
    Array 
    (
     [0] => WEEK 48 
     [1] => WEEK 49 
     [2] => WEEK 47 
     [3] => WEEK 50 
     [4] => WEEK 51 
    ) 

我缺少什麼？

Answer 1

笨箱，有在其擰向上分揀線之間的ksort($data)。

Answer 2

試試這個

<?php 

     $data = array(6 => 'WEEK 48', 7 => 'WEEK 49', 8 => 'WEEK 47', 9 => 'WEEK 50', 10 => 'WEEK 51'); 

     $sort = array(8 => 201647, 6 => 201648, 7 => 201649, 9 => 201650, 10 => 201651); 

     array_multisort($data, SORT_ASC, $sort); 

     echo '<pre>'; 
     print_r($data); 

    ?> 

輸出：

Array 
(
    [0] => WEEK 47 
    [1] => WEEK 48 
    [2] => WEEK 49 
    [3] => WEEK 50 
    [4] => WEEK 51 
) 

Answer 3

語法

array_multisort(array1,sorting order,sorting type,array2,array3...) 

你應該爲你的陣列提供sorting_type

array_multisort($sort, SORT_ASC, SORT_STRING, $data, SORT_ASC, SORT_NUMERIC); 

var_dump($sort); 
var_dump($data); 

結果：

array(5) { 
    [0]=> int(201647) 
    [1]=> int(201648) 
    [2]=> int(201649) 
    [3]=> int(201650) 
    [4]=> int(201651) 
} 

array(5) { 
    [0]=> string(7) "WEEK 47" 
    [1]=> string(7) "WEEK 48" 
    [2]=> string(7) "WEEK 49" 
    [3]=> string(7) "WEEK 50" 
    [4]=> string(7) "WEEK 51" 
}