haow can i make a button and assign code to its press : i've a forum and i want to list the messages by author, i did a list of all the authors with a FORM, i've heard that all variables of the form where usable in php, but how can i ...?
Start with some of the tutorials which cover basic forms. It's dead simple but you have to start with some learning and examples before you can move into the real life situations. If you don't you'll just end up spending longer as you struggle.
I started with http://www.php.net/tut.php - you should too.
Sarah