I am building a web application using CI HMVC framework. My question is very simple. How wise it would be to use drupal as a backend in a codeigniter application. By the term backend I mean, the admin part will be a drupal installation. All I want to acheive is codeigniter will be interacting with drupal database and pull the information from over there to display it on frontend. In short my frontend will be a codeigniter application which will be using drupal database. Has anyone tried this?