title: Show Redirecting In.. CountDown Timer PHP
body: <p>I have this code so far that redirects the user after 5 seconds to the correct URL:</p>
  
  <p><code>&lt;?php 
  $url = $_GET['url'];
  header("refresh:5;url=$url"); 
  include('ads.php');
  ?&gt;</code></p>
  
  <p>Please could you tell me how i could display a countdown timer saying Redirecting In.. with .. being the amount of seconds left. I am new to web development so all code will be helpful!</p>