排序數組而不更改密鑰

Question

如何排序下面的數組，因此頂部和鍵的較大值不會更改。

Array 
(
    [8] => 2 
    [9] => 2 
    [10] => 1 
    [12] => 1 
    [16] => 1 
    [17] => 1 
    [18] => 1 
    [19] => 1 
    [20] => 2 
    [23] => 1 
    [24] => 2 
    [25] => 2 
    [27] => 1 
    [50] => 2 
    [4] => 1 
    [14] => 1 
) 

感謝

Answer 1

您應該能夠使用asort/arsort。從PHP.net（http://www.php.net/manual/en/function.arsort.php）的arsort用法示例：

<?php 
    $fruits = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple"); 
    arsort($fruits); 
    foreach ($fruits as $key => $val) { 
     echo "$key = $val\n"; 
    } 
?> 

Answer 2

直接從PHP Manual

This function sorts an array such that array indices maintain their correlation with the array elements they are associated with. This is used mainly when sorting associative arrays where the actual element order is significant.

<?php 
$fruits = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple"); 
asort($fruits); 
foreach ($fruits as $key => $val) { 
    echo "$key = $val\n"; 
} 
?>