I have a link class.php?event=donbass2012 and I have a html form. How to send value from form to url to get link like this:
class.php?event=donbass2012&class=f1a
Is this what you want?
<form name="input" action="class.php" method="get">
<input type="hidden" name="event" value="donbass2012" />
<input type="hidden" name="class" value="f1a" />
<input type="submit" value="Submit" />
</form>