CodeIgniter is an open source rapid development web application framework, for use in building dynamic web sites with PHP. “Its goal is to enable developers to develop projects much faster than writing code from scratch, by providing a rich set of libraries for commonly needed tasks, as well as a simple interface and logical structure to access these libraries.
CodeIgniter is loosely based on the popular Model-View-Controller development pattern. While view and controller classes are a necessary part of development under CodeIgniter, models are optional.

CodeIgniter is one of the world’s most popular Open Source PHP frameworks, used by thousands of developers powering hundreds of thousands of sites

CodeIgniter is most often noted for its speed when compared to other PHP frameworks.In a critical take on PHP frameworks in general, PHP creator Rasmus Lerdorf spoke at frOSCon in August 2008, noting that he liked CodeIgniter “because it is faster, lighter and the least like a framework.”

Its high quality developed frames make server host transferring quicker with nearly zero chance of data loss. Therefore, you do not need to worry about anything during the migration of your website. Another advantage that you gain by developing your program on code igniter is that it is easily adaptable to any changes you need to make at any stage of the development without getting into the hassle of recreating the entire program all over again. If there is a team of expert code igniter developers at your disposal then you can develop a content management system just the way you want.

Benefits of Code Igniter:

• A small track and astounding presentation
•  Provision of broad compatibility along with standard hosting accounts,
• Configuration and normal coding rules are not required
• Depiction of straightforward solutions
•  Free from complex structures and development

CodeIgniter is a PHP-driven framework, containing a grab-bag of libraries, helpers, plug-ins and other resources, that takes care of many of the more complex procedures and functions for which PHP is famous. CodeIgniter does all the heavy lifting for you while maintaining high performance. It will simplify PHP syntax, streamline the code underlying your web pages, and—best of all—have you churning out dynamic, interactive, professional websites in no time.

Here are some of the principal benefits of coding your next project in CodeIgniter:

• It makes coding in PHP simple, quick and user-friendly.
• It’s an excellent framework for learning more about how PHP works as you code.
• It underpins the Model/View/Controller (MVC) approach to web development—a best practice philosophy all developers should adhere to.
• It’s built on a linear, easy-to-use folder structure.
• It’s open source and simple to configure and customize for your own needs.
• You can construct your own cleaner URI lines in CodeIgniter.