数组唯一并合并对象数组中的值

Question

I have one big array and I want to make it unique on doc_id and merge 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
        )

Just to make it unique I am using below code

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

I am able to get unique document but I lost roleid, I need to merge roleid with doc_id it should be

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

Thanks in advance

Answer 1

Your current format of roleid is not in the best format for processing. If you change it to array you can do something similar to this:

$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);

With the result:

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

)