CClusterQueue::UnQuoteParam

static function UnQuoteParam($str)
{
	if($str <> '')
	{
		$prefix = mb_substr($str, 0, 2);
		if($prefix === "s:")
			return mb_substr($str, 2);
		if($prefix === "b:")
			return mb_substr($str, 2) === "t";
	}
	return null;
}