Did you know that WAMP is totally different with XAMPP? Read the explanation of WAMP and XAMPP caferully:
WAMP Server or you can call it as Windows, Apache, MySQL and PHP or Apache, MySQL and PHP on Windows, is a Windows web development environment. Once WampServer is installed, you have the possibility to add as many Apache, MySQL and PHP releases as you want but all the PHP releases aren't compatible with the Apache releases. It didn't mean WampServer knows which releases can work together and lets you know when it is not possible to switch...