Whats the function to get radio buttons, or i guess anything for that matter in input forms to reset what has been typed in once a user refreshes a page or clicks another radio box?

$_GET or $_POST depending on how you submit the form, check this Tizag (http://www.tizag.com/phpT/examples/formex.php/) tutorial.

use $_POST if you have passwords or other sensitive information...other than that you can use either $_GET or $_POST.