addons for wampserver 2.4 (1 reply)

I am using Wampserver 2.4 (64-bit) on Windows 8.1. Everything works fine on the default settings, but the project I am taking require Php 5.6 or higher. I know it is possible to set up Wamp to work with multiple versions of a language, but after hours of attempts and following various directions found on Google, I have failed to get this working.
I have been searching for addons to install but also been unsuccessful.
If someone could help I would be grateful