title: how to detect first visit to site with cookies, and without cookies
body: <p>I am adding a "welcome loader" to a website. </p>
  
  <p>I can detect if the visit is new or not with cookies:</p>
  
  <pre><code>function show_loader()
  {
   setcookie("loader_shown", "1", time() + 80,"/"); 
  
   echo "&lt;div class='loader'&gt;hello&lt;/div&gt;";    
  
  }
  
  if(! $_COOKIE['loader_shown'])
  {
   die(show_loader());
  }
  
  // the rest of the code to show the site.......
  </code></pre>
  
  <p>all good for browsers with cookies enabled.... but how would I handle this situation for non cookie enabled browsers? Thinking about setting another cookie, then seeing if it is set before running this bit....</p>
  
  <p>answers on a postcard!</p>