charset_converter.php

См. документацию.

<?
class CharsetConverter
{
    private static $instance;

    public static function GetInstance()
    {
        if (!isset(self::$instance))
        {
            $c = __CLASS__;
            self::$instance = new $c;
        }
 
        return self::$instance;
    }

    public static function ConvertCharset($string, $charset_in, $charset_out, &$errorMessage = "", $ignoreErrors = false)
    {
        $string = strval($string);
 
        return \Bitrix\Main\Text\Encoding::convertEncoding($string, $charset_in, $charset_out);
    }

    public function Convert($sourceString, $charsetFrom, $charsetTo)
    {
        return self::ConvertCharset($sourceString, $charsetFrom, $charsetTo);
    }
}