When did you get into Codeigniter?

Since 2009.

Integrated with Fpdf.

Then integrated with xajax.

Never looked back.

Created systems for intranet and internet the likes of School Systems encompassing Billing, Collection, Reservation and Academic Records for Primary, Seconday and College and Short Courses; Cable Systems Billing and Collection integrated with SMS Server and Android Phones; Tutorial / Learning systems; Billing and Collection interfaced with Salesforce, Paypal or Authorize; etc.

Database is either MySql or PostgreSQL.