array_multisort():数组大小不一致 [英] array_multisort(): Array sizes are inconsistent

问题描述

我正在尝试使用array_multisort()函数在其子数组的基础上对数组进行排序...

I am trying to sort an array on the base of its child array using array_multisort() function......

正在尝试；

print_r($mar); echo '<br>';
$arr2 = array_multisort($mar, array('wek'=>SORT_ASC));
print_r($arr2);

得到错误array_multisort(): Array sizes are inconsistent

排序前的输出是

Array ( 
    [0] => Array ( [dat] => 1 [wek] => 5 [mac] => A100 [mcr] => #00c8ff ) 
    [1] => Array ( [dat] => 2 [wek] => 9 [mac] => A100 [mcr] => #00c8ff ) 
    [2] => Array ( [dat] => 5 [wek] => 13 [mac] => A100 [mcr] => #00c8ff ) 
    [3] => Array ( [dat] => 5 [wek] => 6 [mac] => A101 [mcr] => #ff8800 ) 
    [4] => Array ( [dat] => 13 [wek] => 17 [mac] => A100 [mcr] => #00c8ff ) 
    [5] => Array ( [dat] => 20 [wek] => 21 [mac] => A100 [mcr] => #00c8ff ) 
    [6] => Array ( [dat] => 8 [wek] => 14 [mac] => A101 [mcr] => #ff8800 ) 
)

我需要的是:

Array ( 
    [0] => Array ( [dat] => 1 [wek] => 5 [mac] => A100 [mcr] => #00c8ff ) 
    [3] => Array ( [dat] => 5 [wek] => 6 [mac] => A101 [mcr] => #ff8800 ) 
    [1] => Array ( [dat] => 2 [wek] => 9 [mac] => A100 [mcr] => #00c8ff ) 
    [2] => Array ( [dat] => 5 [wek] => 13 [mac] => A100 [mcr] => #00c8ff ) 
    [6] => Array ( [dat] => 8 [wek] => 14 [mac] => A101 [mcr] => #ff8800 ) 
    [4] => Array ( [dat] => 13 [wek] => 17 [mac] => A100 [mcr] => #00c8ff ) 
    [5] => Array ( [dat] => 20 [wek] => 21 [mac] => A100 [mcr] => #00c8ff ) 
)

推荐答案

以下行中存在错误:

$arr2 = array_multisort($mar, array('wek'=>SORT_ASC));

您正尝试将返回结果存储到数组中，但array_multisort返回布尔值而不是已排序数组:

you are trying to store the return result to an array, but array_multisort returns boolean values not the sorted array:

执行此操作以对多维数组 $ mar 进行排序:

do this for sorting your multidimensional array $mar:

foreach ($mar as $key => $row)
{
    $wek[$key]  = $row['wek'];
}    

// Sort the data with wek ascending order, add $mar as the last parameter, to sort by the common key

array_multisort($wek, SORT_ASC, $mar);

$ mar 数组现在在上述操作之后进行排序..

The $mar array is now sorted after the above operations..

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