save MULTIPLE changes to database

hello,

I have read in different topics how to save changes back to the database using hidden fields. My problem is that I'm allowing to change different number of rows, so I don't know a priori how many hidden fields I would need to use, and since the template is the only part of code where I can keep the count of modified rows (correct me if i'm wrong) I cannot create the hidden fields dinamically from my php page. Is there any solution without using Ajax and the XMLHttpRequest object, which, as I have read, would make it more easily.

Thank you!