util.php

<?php
 
namespace Bitrix\Socialnetwork\Component\WorkgroupList;
 
class Util
{
    public static function filterNumericIdList(array $idList = []): array
    {
        $idList = array_map(static function($value) {
            return (int)$value;
        }, $idList);
 
        $idList = array_filter($idList, static function($value) {
            return ($value > 0);
        });
 
        $idList = array_unique($idList);
 
        return $idList;
    }
}