CODEIGNITER
WHAT IS CI
CodeIgniter is a powerful PHP framework with a very small footprint,built for
developers are in need of a simple and elegant toolkit to create full-featured web
applications. CodeIgniter is an Application Development Framework - a toolkit -
for people who want to build dynamic websites using PHP. CodeIgniter contains
libraries, simple interface and logical structure to access these libraries, plug-ins,
helpers and some other resources which solve the complex functions of PHP more
easily maintaining a high performance.
The installation of CodeIgniter is very easy and it is a free toolkit which is
lightweight too. In addition, high performance can be achieved by using
CodeIgniter.Projects can be developed faster by minimizing the amount of code
needed for it.  
CodeIgniter is based on popular model-view-controller (MVC) development
pattern. MVC is a software approach that separates application logic from
presentation. In practice, it permits the web pages to contain minimal scripting
since the presentation is separate from the PHP scripting.
? The Model represents your data structures. Typically your model classes will
contain functions that help you retrieve, insert, and update information in
your database.
? The View is the information that is being presented to a user. A View will
normally be a web page, but in CodeIgniter, a view can also be a page
fragment like a header or footer. It can also be an RSS page, or any other
type of “page”.
? The Controller serves as an intermediary between the Model, the View, and
any other resources needed to process the HTTP request and generate a web
page.

BENEFITS OF CODEIGNITER
This simple toolkit offers a myriad advantages to its users. A rich set of simple
interface, libraries, logical structure and so on can be gained to develop any
dynamic website with PHP faster. It helps you during the process when you
write code from scratch. It offers various dynamic features in a suite to support
efficient development or development of dynamic PHP websites.
? As compared to the other frameworks, CodeIgniter Development is fast,
reliable, lightweight and capable.
? In web development, same code can be described in different way since
many features are almost the same.
? It is compatible with almost all platforms, Operating systems and web
servers.
? Users can easily find and solve the errors.
? It offers PHP developer an easiest way to utilize modular programs and get
the specific function through the framework.
? It makes your web more robust and your code easier to read and maintain.
? It doesn't require adhering to restrictive coding rules.
? CodeIgniter has an outstanding performance as well as presentation.
? It is compatible with almost all platforms, Operating systems and web
servers.
CodeIgniter is the best open source development platform for PHP. It is very
easy to use and has great debugging features. It detects the bugs instantly and
shows errors or warnings. It is simple to fix those bugs during development
itself. Due to its highly interactive and user-friendly interface, it is easy to
create large dynamic and secure applications.