CodeIgniter is a powerful PHP framework with a very small footprint, built for developers who need a simple and elegant toolkit to create full-featured web applications.
CodeIgniter was created by EllisLab, and is now a project of the British Columbia Institute of Technology.CodeIgniter is an application development framework, which can be used to develop websites, using PHP.
It is an Open Source framework. It has a very rich set of functionality, which will increase the speed of website development work.If you know PHP well, then CodeIgniter will make your task easier. It has a very rich set of libraries and helpers.
By using CodeIgniter, you will save a lot of time, if you are developing a website from scratch. Not only that, a website built in CodeIgniter is secure too, as it has the ability to prevent various attacks that take place through websites.