Function Development fz

I have two task below: TASK 1: I need a javascript to store the registered user "time spending" on my website in daily. Please develop a function that can track the user time spending on website and store it into the sql database. I want to have the purpose to calculate total time spending of every user in my website. You are require to develop a prototype with the working code for me to test. TASK 2: i will provide the login. click "my account" -> "my minimall". when click on "change plan". i want to have a data store into mysql, please provide me the code. ** This project will not provide FTP, you are require to work the script and send to me for implementation. Your script must be tested.