php & MySQL Project

We have a BETA Website that has question and answers on it. The database and PHP exist, but do not communicate. We need the php to call the database to update the site. Users (What we need) Set a default category per day via calendar and logged in users should be able pick the category of their choice. Users can upload a profile picture Users correct answers are stored, but erased front site once page is closed Users can see amount donated by Correct Answer during quiz and displayed in dashboard Questions and Answers (What the home screen needs) Include real projects ([login to view URL]) Link php code to new database, so the data can be visible front side and stored backside Minor modifications to admin page and calendar(add additional calender feature) Create ability to remember Incorrect and Correct Answers to database(displayed in Admin page) Set increment and decrement regarding Question Difficulty