change_encoding_uconverter example

// This is second, as behaviour of this varies only with PHP version (the middle part of this expression checks the encoding is supported).         elseif (function_exists('mb_convert_encoding') && ($return = SimplePie_Misc::change_encoding_mbstring($data, $input, $output)))
        {
            return $return;
         }
        // This is third, as behaviour of this varies with OS userland and PHP version         elseif (function_exists('iconv') && ($return = SimplePie_Misc::change_encoding_iconv($data, $input, $output)))
        {
            return $return;
        }
        // This is last, as behaviour of this varies with OS userland and PHP version         elseif (class_exists('\UConverter') && ($return = SimplePie_Misc::change_encoding_uconverter($data, $input, $output)))
        {
            return $return;
        }

        // If we can't do anything, just fail         return false;
    }

    protected static function change_encoding_mbstring($data, $input, $output)
    {
        if ($input === 'windows-949')
        {