Describing as example: assume A= www.domain.com/test.html is a page and B = www.domain/php/forum/ is another php running forum .
it is possible to load B on A in somehow ? and also how may I add php forums as a button popup ? php page is on another folder not in the same folder.
please any advise. Thanks
The easiest way to do what you want to do is to use an iframe to embed one document into another. For the most basic implementation your HTML on www.domain.com/test.html would look like
<iframe src="www.domain/php/forum/"></iframe>
You can use iframe in a HTML way, or get the page by cURL or file_get_contents in a php way.
Assuming you changed test.html to test.php you could include the index of you forum.
<?php include 'php/forum/index.php'; ?>
I don't see why you would want to include it all however? Perhaps make a widget that shows some useful information that you want on your homepage and include that?