Evaluation. Easy Question but I need some help

I'm trying to evaluate form submissions. When I return a form submission cause of a missing field I want the radio and checkboxes to reflect what the client submitted. So if somone forgets to fill in their address, but has done everything else fine, I dont want them to have to refill out the form. So how would I in PHP say if $var == "value1" then this radio button is checked? And how do I do it and keeping the code compact? ===== -------------------------------------------------------- "Theres no such thing as a problem unless the servers are on fire!" __________________________________________________ Do You Yahoo!? Yahoo! - Official partner of 2002 FIFA World Cup http://fifaworldcup.yahoo.com