如何像PHP中的cron一样每15分钟自动刷新一次页面？

I am using Server Side Scripting for my callback notification sections

 header("Refresh:10;url='domain/admin/callback.php'"); 

but the all the admin panel pages are redirecting to same page which I have given in URL section. Please help me out. Thank you.

I have one PHP page which contains mail notification to customer. I want to run that file for every 15 minutes. Apart from above logic if you have any better suggestions will be appreciated.

Thank you.

Edit: I think I've just worked out what you were asking.

You can call a PHP script every 15 minutes via an AJAX request.

setInterval(function() {
   $.post(
    "/path/to/your/script.php",
        {
            data: your_posted_data
        },
        function(data, status){
            alert(data);
        }
    );
}, 15 * 60 * 1000); // 15 * 60 * 1000 milsec = 15 mins

The returned data can be, say, the new notifications that the user has received, and you can update any elements on your page accordingly. Hope this helped and wasn't too obvious.