I have read the topics on Google AdSense and also have downloaded the AdSense code. It is working well. Here is the issue:

A website can display upto three Google advertisements on the webpage. The code helps me to display one ad after the first post. How can we make a website display (a) Ad after first post (b) Ad after 3rd post, if there is no post the ad will not display and (c) Ad after the last post, if there is only one post the ad will not display becasue it is already displayed as in (a).

Can you please help me? Thanks in advance.

Code from MiniBB.com forum:

function parseMessage(){

//Use $GLOBALS['anchor'] for determining the anchor value
$GLOBALS['adsense']='';

if ($GLOBALS['anchor']==1 or $GLOBALS['anchor']==9){

//You Adsense generated code here
$GLOBALS['adsense'] = <<<out

<script type="text/javascript"><!--
google_ad_client = "pub-XXXXXXXXXXXXXXXXX";
google_ad_width = 468;
google_ad_height = 60;
google_ad_format = "468x60_as";
google_ad_type = "text_image";
google_ad_channel ="";
google_color_border = "E9EFF4";
google_color_bg = "E9EFF4";
google_color_link = "006699";
google_color_text = "000000";
google_color_url = "006699";
//--></script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>

out;

}

return;
}

How can I use other ads like that in between posts?

Honestly saying, I don't understand what these requests are about. Too badly explained.

For example in this topic (Minibb Demo)

http://minibb.org/minibb-test.php?action=vthread&forum=1&topic=482

In post number (#1)

you can see google ads..

and in other post there is no ads..

and you can see ads on post (#9)

so I meant that.. how about other ads company to make like this same as minibb demo.. not in everyposts...

Here it is: Adsense Support

Google AdSense is a free program that empowers online publishers to earn revenue by displaying relevant ads on a wide variety of online content.