Question

I’ve recently come across something like:

• <form method="get" action="/somewebdir/script.php">
     <input type="radio" name="param0" value="foo" />
     <input type="radio" name="param1" value="foo" />
     <input type="radio" name="param2" value="bar" />
     <input type="radio" name="param2" value="bar" checked="checked" />
  </form>
  

I was curious if there was a way to send multiple key/values, if the second param2 is sent, without any JS.
So that the page would result to something like:

• http://domain/somewebdir/script.php?param2=bar&param3=foobar

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I changed the value from "bar" to "bar&param3=foobar", but obviously the special chars (& and =) will be encoded.

Any ideas? (again w/o JS)

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Hidden elements won’t work as it will always send the parameter, which would have a negative affect on other things being called by the handler (script.php)

Answer 1

No, it can’t be done. Instead, do it from the server side (as in, expect the input, and if it arrives act accordingly). If it’s not coming from the user, it’s not user input!

If you need a specific value for each user, you can use a hidden input, and cross check that with your radio button.

<input type="hidden" name="param3" value="value here">