CodeIgniter a very popular and powerful MVC framework which is used to develop web applications. It is a free and Open source PHP framework.
Before you continue you should have a basic understanding of the following:
CodeIgniter was created by EllisLab, and is now a project of the British Columbia Institute of Technology.
The latest version of CodeIgniter framework is 3.1.5.
The source code of CodeIgniter is hosted on GitHub and licensed under the terms of MIT License.
As it is open source software, you are permitted to copy, modify and distribute this software and its documentation for any purpose under following conditions.