We are trying to develop this simple web app with my friends. We would need a little bump to right direction. The program itself would be written in html with some php and JavaScript in it. It would be driven in localhost environment. We have a NFC reader for our computer already. We would need to read uid from nfc tag and write it to html form. Is it possible and with what language we should do it? Thank you for your help.
It is possible and you should look for a sdk for your NFC reader and then use one of the languages the reader supports.
You find a linux sdk here:
http://www.acs.com.hk/index.php?pid=product&id=ACR122U
It is written in c, so unless you find another one: use c ;)