Need PHP help please!! Thank you.

In this assignment you will be writing a simple chat program, where you can talk to yourself and see the message history. Step 1: You need to write a simple web page that will use PHP to run a single or multi-user chat program. Your page will have a small text box (input box), a large text box (history box) and a button. The input box is where you will type messages and the button will append what is in the input box (provided it isn't empty) to the history box. The chat data should be stored in a database table. Design the table in any way that you want. For a multi-user chat you will need to add a box for the user's name. You could also provide time stamp information. You do not need to thread the discussions. Simply show the input line by line as it as type into the input textbox. When you save the chat messages in a database, they will appear the next time you go back to the page and chat again