Serial Port in PHP

I need a code in PHP which can read and write serial port RS232. Operating System windows 7, windows XP SP2. Software should have following options. 1. Com port Name selection 2. Bard Rate selection 3. Send/Receive selection 4. Text Box for Data transmit or received data. 5. Submit button. Its a very simple program. Please do not use any addition software like activexperts, virtual port. I need this code to add serial port read/write function in my website.