I have a PHP application and I need a programmer to:
1) Add a payment gateway using QuantumGateways API (code examples provided)
2) Add an invoice process so users can see and pay invoices, including recurring payments.
3) Set up a free-mium process so users can start with a limited free trial and upgrade to paid accounts.
4) Make minor tweaks to the code to improve the look and functionality of the application.
5) Tweak the reporting charts on the application to allow more correlations and to look better using a free chart provider: [url removed, login to view]
Should take approximately 20 hours. Database is MySQL.