filedecodefilter.php

<?php
 
namespace Bitrix\Main\Web;
 
use Bitrix\Main\Application;
use Bitrix\Main\Text\Encoding;
use Bitrix\Main\Type;
 
class FileDecodeFilter implements Type\IRequestFilter
{
    public function filter(array $values)
    {
        if (Application::getInstance()->isUtfMode())
        {
            return null;
        }
 
        if (empty($values['files']) || !is_array($values['files']))
        {
            return null;
        }
 
        return [
            'files' => Encoding::convertEncoding($values['files'], 'UTF-8', SITE_CHARSET),
        ];
    }
}