PHP script for client records

Hello, I need a simple one page script to easily manage the client records. My client will upload multiple (max. 10) 'doc' files using this script and the script will create a record for no. of doc files, payment calculation ($1.5 per file), and paid/unpaid status. To easily understand the project, I've attached the drawing of the project. There is a login for me through which i can change the status from unpaid to paid with amount. Please have a look and let me know if i can give more details.