Our Company wishes to have some web pages outside of Magento (1.9) but on the same web server and control access to those pages according to the credentials of a person who logged in to Magento.
Initially, we would like a page that is only visible to people who have logged in and belong to a specific group of customers.
After that, we would like to be able to control what features appear on a web page according to the person who started the session.
In our previous site of no electronic commerce, the above was achieved through PHP pages that
1. I used the phpBB login information
2. comparison of the identification of the person who started the session with the authorities registered in a mySQL database.
So I am happy to write fairly simple things in php and sql (procedural approach instead of object oriented) but I am not aware of the internal workings of Magento.