CodeIgniter is an open source rapid development web application framework, for use in building dynamic web sites with PHP. CodeIgniter is loosely based on the popular Model-View-Controller development pattern. While controller classes are a necessary part of development under CodeIgniter, models and views are optional. latest stable version 3.0.0 was released March 31, 2015. here im going to tell you a simple method the set admin panel view and user view by using Codeigner.