Is there way to use two PHP versions in XAMPP?

We are running XAMPP with PHP 7.0 because our new products requires PHP 7. But there are old projects which use functions like `mysql_connect`, etc. Those are removed in PHP 7.0. So, is there a way to easily change PHP versions in XAMPP? > **Note**: Please don't suggest to upgrade old project to compatible with new versions because I am not in a position to do it because of that > decisions I can't get as a developer (just an employee).