和array_diff（）与多维数组 [英] array_diff() with multidimensional arrays

问题描述

使用和array_diff（），我可以比较和删除类似的项目，但如果我有以下的阵列？

Using array_diff(), I can compare and remove similar items, but what if I have the following arrays?

数组1

Array
(
    [0] => Array
        (
            [ITEM] => 1
        )

    [1] => Array
        (
            [ITEM] => 2
        )

    [2] => Array
        (
            [ITEM] => 3
        )
)

ARRAY2

Array2

Array
(
    [0] => Array
        (
            [ITEM] => 2
        )

    [1] => Array
        (
            [ITEM] => 3
        )

    [2] => Array
        (
            [ITEM] => 1
        )
    [3] => Array
        (
            [ITEM] => 4
        )
)

我想筛选出类似物品;结果应该返回4.我如何可以重新安排我的数组，这样我可以使用和array_diff（）？

推荐答案

我可能会通过原数组进行迭代，并让他们一维...像

I would probably iterate through the original arrays and make them 1-dimensional... something like

foreach($array1 as $aV){
    $aTmp1[] = $aV['ITEM'];
}

foreach($array2 as $aV){
    $aTmp2[] = $aV['ITEM'];
}

$new_array = array_diff($aTmp1,$aTmp2);

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