regionfinder.php

См. документацию.

<?php
 
namespace Bitrix\Location\Common;
 
use Bitrix\Main\Loader;

class RegionFinder
{
    public static function getCurrentRegion(): string
    {
        $result = null;
 
        if (Loader::includeModule('bitrix24'))
        {
            $licensePrefix = \CBitrix24::getLicensePrefix();
            if ($licensePrefix !== false)
            {
                $result = (string)$licensePrefix;
            }
        }
        elseif (Loader::includeModule('intranet'))
        {
            $result = (string)\CIntranetUtils::getPortalZone();
        }
        elseif (defined('LANGUAGE_ID'))
        {
            $result = LANGUAGE_ID;
        }
 
        if (!$result)
        {
            $result = 'en';
        }
 
        return $result;
    }
}