Form Submittal Challenge

How can I reduce number of variables?

[treeline]

I'm trying to design a form that selects multiple locations. For usability reasons I'm using three seperate SELECT boxes to choose 3 locations. This gives me 3 variables passed back.

place=ohio&place2=texas&place3=iowa

My script is designed to take one variable, with commas separating places:

place=ohio,texas,iowa

How can I use multiple SELECT boxes and end up with this single variable & commas between locations? Is there another approach I should look at?

Thanks for your help! :)

[dcrombie]

There's a number of ways you could do this using JavaScript - but just as many reasons not to.

IMHO best practice would be to name all three SELECT boxes "place[]". Then, when the form is submitted, you will have a single variable, $_POST["place"], which is an array of the values.

;)