SimplePie_Misc::change_encoding_mbstring

		// 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')
		{
			$input = 'EUC-KR';
		}
		if ($output === 'windows-949')
		{
			$output = 'EUC-KR';
		}
		if ($input === 'Windows-31J')
		{
			$input = 'SJIS';
		}
		if ($output === 'Windows-31J')
		{
			$output = 'SJIS';
		}

		// Check that the encoding is supported
		if (@mb_convert_encoding("\x80", 'UTF-16BE', $input) === "\x00\x80")
		{