Just for me. 

PLEASE NEVER USE THIS IN PRODUCTION. FOR YOUR OWN SAKE.

How to use:
- put your database-connection into models/DBConnection.php
- create new dataArray like in index.php line 7-9. 
- with getAll just specify which db and which table you want to query.
- work with the array data in your template (e.g. views/index.php).