commonnormalizer.php

<?php
namespace Bitrix\Location\Entity\Address\Normalizer;
 
use Bitrix\Main\Text\Encoding;
 
class CommonNormalizer implements INormalizer
{
    public function normalize(string $string): string
    {
        $result = $string;
 
        // todo: \w on non-utf-8 sites
        if(mb_strtolower(SITE_CHARSET) != 'utf-8')
        {
            $result = Encoding::convertEncoding($result, SITE_CHARSET, 'utf-8');
        }
 
        $result = preg_replace('/([^\w\s]|_)/iu', ' ', $result);
 
        if(mb_strtolower(SITE_CHARSET) != 'utf-8')
        {
            $result = Encoding::convertEncoding($result, 'utf-8', SITE_CHARSET);
        }
 
        $result = preg_replace('/\s+/i'.BX_UTF_PCRE_MODIFIER, ' ', $result);
        $result = trim($result);
        return ToUpper($result);
    }
}