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How do I conditionally execute HTML code without using variables in PHP?

I am trying to conditionally display HTML on my form based on user selected options (maybe using html buttons). I managed to do that once at the beginning of the form using the $_GET variable but I cant successfully use it again on another section below without affecting what I had already assigned to it.

Please help.

Niki Molnar
Niki Molnar
25,698 Points

Are you compiling everything when the page loads or does the user have to click a button before the second section changes?

(It would be easier if you can you give an example of your code, otherwise it's difficult to understand what you're trying to accomplish.)