Create an authentication script that works with BuzzTouch

My request is simple, I need a php authentication script that will enable me authenticate my app users against my own database instead of the Buzztouch control panel. [login to view URL] offers a login plugin that allows you to regulate access to your app. This authenticates using a dataurl. What I need is for a simple php authentication script that will instead authenticate users against my own mysql database. Please only apply IF YOU KNOW YOU CAN ACHIVE THIS. APPLICANTS MUST BE FAMILIAR WITH THE [login to view URL] APP BUILDING PLATFORM.