Build me a PHP modification / Ad on

I already have a php website set-up. I have a generic script with a simply set-up database. All you have to do is for example, I want to show a leaderboard for a certain category, for example number of emails read, you can set it up for me where I would pick a certain start and end date and the leaderboard will come out and I can post it on an html / php I'll pay per category. So bid small since there will be a couple more categories Ill have made. Note : All the database needs are already setup, all you have to do is call them up and arrange them. Pretty simple if you're already knowledgeable in PHP and mysql.