title: get parameter changing url?
body: <p>I am trying to send a form via get.My point is to reopen the same page,     just with another value.
  So i am at the page.</p>
  
  <pre><code>index.php?url=category
  </code></pre>
  
  <p>at the site i have a form with the.</p>
  
  <pre><code>action="index.php?url=category"
  </code></pre>
  
  <p>in the form i have a select with the </p>
  
  <pre><code>name="food".
  </code></pre>
  
  <p>Now i want the page URL to be like </p>
  
  <pre><code>index.php?url=category&amp;food=1
  </code></pre>
  
  <p>What should insert at the action value to get to this url?
  Whatever i try, it changes the url to </p>
  
  <pre><code>index.php?food=1
  </code></pre>