Script to alternate AdSense ad types

Source: http://adsense.blogspot.com/2006/08/abcs-of-ab-testing.html

<script type=”text/javascript”>
    var random_number = Math.random();
    if (random_number < .5){
        //your first ad unit code goes here 
    } else { 
        //your second ad unit code goes here 
    } 
</script> 
<script type="text/javascript"     src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script>

Code (markup):

 

This can also be done with PHP, but the advantage of the JavaScript version is that you'll still get a random ad even if it's been cached, where as the PHP output will only change if it's regenerated by the server.

Thanks minstrel - good find.

 

here's the PHP version. http://www.justin-cook.com/wp/2006/04/19/displaying-and-tracking-multiple-random-adsense-formats/

the advantage to using PHP is less info that needs to be sent to the client, and no extra JavaScript processing needed

 

The best part about this testing script is it's fully approved by google:

 

thanks minstreal. I'm using the script. It's working fine.

 

Thanks for sharing minstreal and frankcow

I found while ago an ASP version but it didn't work, and obviously either in those sites hosted on Linux servers

 

Thanx, I did make one on my own before ...