GetMembersTrait.php

См. документацию.

<?php
 
namespace Bitrix\Socialnetwork\Control\Member\Trait;
 
use Bitrix\Main\Type\Collection;
use Bitrix\Socialnetwork\UserToGroupTable;
 
trait GetMembersTrait
{
    protected function getMemberIds(int $groupId, ?string $role = null): array
    {
        $query = UserToGroupTable::query()
            ->setSelect(['USER_ID'])
            ->where('GROUP_ID', $groupId)
        ;
 
        if ($role !== null)
        {
            $query->setFilter(['ROLE' => $role]);
        }
 
        $rows = $query->exec()->fetchAll();
 
        $memberIds = array_column($rows, 'USER_ID');
 
        Collection::normalizeArrayValuesByInt($memberIds, false);
 
        return $memberIds;
    }
}