An Login shared between the site and the online game

Hi, we are developing with my team an online game, and an internet site made with Drupal.

I want to create a file called gameinfo.php

and put this file in the htdocs folder

this gameinfo.php file must call some informations.

These informations are: User ID + Username + Password + Email

Where are these informations? In the default.settings.php?

Drupal version: