hyperlink update data based on 2 field ?

[eluser]mungmung[/eluser]
Hi !
I’d like an update of research data is based on the “nip” and “id”,
I’ve created a hyperlink to its update button but only by his “nip”..
This code hyperlinks which have been made:

Code:

<a href="updatedata/&lt;?php echo $data-&gt;nip; ?&gt;;"> Update </a>

how to write the code, so “nip” and “id” can read?? where is the id had been added?

PLEASE HELP !!!!!