How do I auto refresh a page after a certain number of seconds

Add this code in the header of the page.

This must be loaded BEFORE anything else.

1. Straight Auto Refresh

<?php header('Refresh: 120'); ?>

2. Auto Refresh and redirect to a new page

<?php header('Refresh: 120; url=http://www.pageto') ; ?>

Another Countdown and redirect scripts

<script language="Javascript">
<!--
/*
This credit must stay here for use
For this script, visit java-scripts.net
or http://wsabstract.com
*/
var countdown = "1800"

function doCount() {
      if (countdown > 0) {
        countdown--
      } else {
            document.location = "../../../general/no_success.php"
      }
window.status=countdown + " seconds left to view this page."
setTimeout('doCount()',1000)
}
doCount()
//-->
</script>