AttendeeCodeTrait.php

См. документацию.

<?php
 
namespace Bitrix\Socialnetwork\Space\List\RecentActivity\Event\Trait;
 
trait AttendeeCodeTrait
{
    private function getGroupIdFromAttendeeCode(string $attendeeCode): ?int
    {
        if (!str_starts_with($attendeeCode, 'SG'))
        {
            return null;
        }
        $attendeeCodeMainInfo = explode('_', $attendeeCode)[0] ?? '';
        $groupId = (int)substr($attendeeCodeMainInfo, 2);
 
        if ($groupId <= 0)
        {
            return null;
        }
 
        return $groupId;
    }
}