Display only required parts of my website in sister website

Now I have my website built on PHP Mysql. Consider this like a forum. Now when a user posts a reply in my website 1 (ex. I want to do this in a way that it does not show the rest of the page other page contents (like logo etc.). I want to avoid that. I want to make them see only limited information from website 1 and only the info. that I intend.

I hope that makes sense. In a way, you could say that I am trying to replicate my 1 website, and Mulberry Alexa Bags show only a limited part of it. Users browsing 2nd website can post a reply in the 2nd website and it should automatically be posted visible to the visitors of the website 1. Users of website 1 should not know that a user of website 2 has posted it. They would feel that some user from website 1 has posted it. Do I have to use 2 separate mysql DB or just Mulberry Tote Bags 1? I think it would be problematic if I am trying to use Mulberry Bayswater Bags different DB. (I need it this way to bridge the gap between them). At the same time I want to make the front end of the websites different so that they don't feel that they are replying to some other users outside the domain. These websites would be under my control and I will have access to the source code at any time. If I need to change the source code, these changes are welcome.

If the idea is to have two websites with the same data but different presentations, then you would want to simply share a single database between them - assuming they are hosted in the same place and can both get at the database.

You can then just create different PHP pages that both access the same database in the same way but display the data differently.

The best way to do this would be to have a shared library of functions or classes that both sites use to manipulate the data. You would then build a different "presentation layer" on top of that for each site.