数组唯一并合并对象数组中的值

Question

我有一个大数组，我想让它在 doc_id 上唯一并合并 roleid

 Array
(
    [0] => stdClass Object
        (
            [title] => Test ÆØÅ
            [doc_id] => 279
            [mid] => 
            [type] => 3
            [label] => 
            [roleid] =>  76, 276
        )

    [1] => stdClass Object
        (
            [title] => Test ÆØÅ
            [doc_id] => 279
            [mid] => 
            [type] => 3
            [label] => 
            [roleid] =>  76, 276
        )

    [2] => stdClass Object
        (
            [title] => NVD AS
            [doc_id] => 415
            [mid] => 
            [type] => 3
            [label] => 
            [roleid] =>  2
        )

    [3] => stdClass Object
        (
            [title] => NVD AS
            [doc_id] => 415
            [mid] => 
            [type] => 3
            [label] => 
            [roleid] =>  76, 276
        )

    [4] => stdClass Object
        (
            [title] => Test for SN
            [doc_id] => 506
            [mid] => 
            [type] => 3
            [label] => 
            [roleid] =>  76, 276
        )

    [5] => stdClass Object
        (
            [title] => Test for SN
            [doc_id] => 506
            [mid] => 
            [type] => 3
            [label] => 
            [roleid] =>  6
        )

为了让它独一无二，我使用下面的代码

foreach ($arry as $val) {
            $newArr[$arry ->doc_id] = $val;
        }
        $result = array_values($newArr);

我可以获得唯一的文档，但我丢失了 roleid，我需要将 roleid 与 doc_id 合并 应该是

Array
(
    [0] => stdClass Object
        (
            [title] => Test ÆØÅ
            [doc_id] => 279
            [mid] => 
            [type] => 3
            [label] => 
            [roleid] =>  76, 276
        )

    [1] => stdClass Object
        (
            [title] => NVD AS
            [doc_id] => 415
            [mid] => 
            [type] => 3
            [label] => 
            [roleid] =>  2,76, 276
        )

    [2] => stdClass Object
        (
            [title] => Test for SN
            [doc_id] => 506
            [mid] => 
            [type] => 3
            [label] => 
            [roleid] => 6,76, 276
        )
Can anyone help in this

提前致谢

Answer 1

您当前的roleid 格式不是处理的最佳格式。如果将其更改为数组，则可以执行类似的操作：

$item1 = new stdClass();
$item1->doc_id = 279;
$item1->role_id = '76, 276, 3';

$item2 = new stdClass();
$item2->doc_id = 279;
$item2->role_id = '1, 44, 76';

$item3 = new stdClass();
$item3->doc_id = 279;
$item3->role_id = '8, 44, 1';

$data = [$item1, $item2, $item3];

$result = [];
foreach ($data as $item) {
    if (isset($result[$item->doc_id])) {
        $existingIds = explode(', ', $result[$item->doc_id]->role_id);
        $newIds = explode(', ', $item->role_id);

        $result[$item->doc_id]->role_id = implode(', ', array_unique(array_merge(
            $existingIds,
            $newIds
        )));

        continue;
    }

    $result[$item->doc_id] = $item;
}


print_r($result);

结果：

Array
(
    [279] => stdClass Object
        (
            [doc_id] => 279
            [role_id] => 76, 276, 3, 1, 44, 8
        )

)

Answer 2

您可以尝试使用array_merge_recursive() 函数合并您的数组。

$mergedArray = array_merge_recursive($arr1, $arr2);

编辑

您正在丢失值，因为您覆盖了它们。你应该使用两个循环。

foreach ($array as $key => $value) {
    foreach ($value as $subkey => $subvalue) {
        $newArray[$value->doc_id][$subkey] = $subvalue;
    }
}

我似乎找不到上述方法对您不起作用的原因。虽然我会给你写另一个解决方案：

$newaArray = array();
foreach ($array as $value) {
    if (!is_array($newArray[$value->doc_id])) {
        $newArray[$value->doc_id] = array();
    }
    $newArray[$value->doc_id] = array_merge($newArray[$value->doc_id], $value);
}

资源

• array_merge_recursive() - Manual