Connection of RFID to PHP via serial

Hi all!!! I want to create a RFID based attendance system. Now I want to transfer the rfid tag no. to php via serial without any use of ethernet shield. Can I do the project and if I could do that, can anybody provide me idea how to do the project!!

I don't see why not. You can send the serial data to a program you write in the Processing language and that can add the php data format. In fact why not feed it straight into processing and not use an Arduino.