title: setcookie does not work
body: <p>I have a simple file called index.php. I need to pass it a querystring that will be stored inside a never-expiring cookie. The file looks exactly like this :</p>
  
  <pre><code>&lt;?php
  
  if (isset($_GET['referrer_id']))
  {
      $querystringWithJunk = $_GET['referrer_id'];
      $querystringArray = explode('/', $querystringWithJunk);
  
      setcookie("referrer_id", $querystringArray[0], time() + 60*60*24*365*100);
  }?&gt;
  </code></pre>
  
  <p>However, no cookie is set. What is inside referrer_id is a simple integer (in the tests I made, it's 1). Function setCoookie return true and everything seems to works fine but no cookie is set. Am I doing something wrong?</p>