[Budgetcoders]

CodeIgniter is an open-source software rapid development web framework for use in building dynamic web sites with PHP. CodeIgniter is loosely based on the MVC pattern, but controller classes are not required. CodeIgniter provides a wide range of built-in libraries and helpers for implementing commonly needed tasks, as well as a simple interface and logical structure to access these libraries.

While Codeigniter does not enforce the MVC pattern, it can make your life easier when used in conjunction with an MVC-based approach. Codeigniter also comes with its own set of security features, making it one of the most secure PHP frameworks available.