Question

我有2个阵列（一个单一和一个多维）。

单阵列＆＃34; A＆＃34;看起来像

[questionid] => Array
        (
            [0] => 12
            [1] => 13
            [2] => 55
            [3] => 15
            [4] => 16
        )

多维数组＆＃34; B＆＃34;看起来像

Array
(
    [0] => Array
        (
            [quid] => 12
            [answer] => AAA
        )

    [1] => Array
        (
            [quid] => 13
            [answer] => neighbour
        )

    [2] => Array
        (
            [quid] => 15
            [answer] =>
        )

    [3] => Array
        (
            [quid] => 16
            [answer] =>
        )

     [4] => Array
        (
            [quid] => 55
            [answer] =>
        )
)

现在我希望根据数组A中的值重新排列数组B（quid）值。因此，在数组B中，quid最后一个元素（55）的值位于最后，而在数组A中，它是第三个位置。

我希望数组B看起来像这样

Array
(
    [0] => Array
        (
            [quid] => 12
            [answer] => AAA
        )

    [1] => Array
        (
            [quid] => 13
            [answer] => neighbour
        )

    [2] => Array
        (
            [quid] => 55
            [answer] =>
        )

    [3] => Array
        (
            [quid] => 15
            [answer] =>
        )

     [4] => Array
        (
            [quid] => 16
            [answer] =>
        )
)

多维数组的代码是

$ansid = array
(
     array
        (
            "quid" => 12,
            "answer" => "AAA"
        ),

     array
        (
            "quid" => 13,
            "answer" => "neighbour"
        ),

     array
        (
            "quid" => 15,
            "answer" =>""
        ),
     array
        (
            "quid" => 16,
            "answer" =>""
        ),

     array
        (
            "quid" => 55,
            "answer" =>""
        )
);

Answer 1

不使用array_walk()更具说明性，您可以

$newB=array()
foreach ($arrayB as $b) $newB[$b['quid']]=$b;
$newA=array()
foreach ($arrayA as $k=>$v) $newA[$k]=$newB[$v]
//$newA has the required structure

Answer 2

使用用户排序功能：

$single_array = ...; // order by the index of this array
$mult_dim_array = ...; // to be ordered by the 'quid' value of the elements

function my_comp($a, $b) {
    return array_search($a['quid'], $single_array ) - array_search($b['quid'], $single_array );
}

usort($mult_dim_array, "my_comp");

这将获得第一个数组的索引，以确定哪个元素首先或更晚。该函数将$single_array读作全局变量（在函数外部定义）。

http://php.net/manual/en/function.usort.php

上的文档

根据php中的另一个数组值重新排列数组值

2 个答案: