Question

我有以下两个数组：

数组1

Array
(
    [0] => 6012
    [1] => 7792
)

数组2

Array
(
    [6012] => Array
        (
            [title] => COIN Group           
            [nid] => 6012            
        )

    [7792] => Array
        (
            [title] => fdsfsdafdsa
            [nid] => 7792            
        )

    [4689] => Array
        (
            [title] => General Group            
            [nid] => 4689           
        )

    [6784] => Array
        (
            [title] => Invitation to join the group Applied Economics for Managers 
            [nid] => 6784           
        )

)

我需要比较这两个数组并找出数组1和数组2之间值的差异。我的输出需要看起来像这样：

Array
(

   [4689] => Array
        (
            [title] => General Group            
            [nid] => 4689           
        )

    [6784] => Array
        (
            [title] => Invitation to join the group Applied Economics for Managers 
            [nid] => 6784           
        )

)

如何使用PHP完成这项工作？

Answer 1

$compare_array1 = array_values($array1);
$compare_array2 = array_keys($array2);

$diff_keys = array_diff($compare_array2, $compare_array1);

$result = array();

foreach ($diff_keys as $key)
    $result[$key] = $array2[$key];

Answer 2

伪代码：

result = array();

foreach array2 as key => value {
    if (in_array(key, array1) {
        result[key] = value;
    }
}

Answer 3

function diffArrays($array1,$array2){
    foreach($array1 as $key)
        unset($array2[$key];
    return $array2;
}

或

function diffArrays2($array1,$array2){
    return array_diff_key($array2,array_flip($array1));

获取两种类型的数组之间的区别

3 个答案: