title: How to keep already-set GET parameter values on form submission?
body: <p>I have a URL : <code>foo.php?name=adam&amp;lName=scott</code>, and in <code>foo.php</code> I have a form which gives me values of <code>rectangleLength</code> &amp; <code>rectangleBreadth</code> with a submit button.</p>
  
  <p>When I click this submit button with form action as <code>$_SERVER['REQUEST_URI']</code>, I get this result URL: <code>foo.php?rectangleLength=10&amp;rectangleBreadth=5</code> (these values have been filled in by the user).</p>
  
  <p>Notice that I am losing my previous values <code>name</code> &amp; <code>lName</code> from the URL.</p>
  
  <p>How can I keep them?</p>
  
  <p>Also, keep in mind that I have to come back to <code>foo.php</code> and if the user wants to submit the form again then the length and breadth values should change.</p>