Open Source PHP Framework (originally from EllisLab)
For more info, please refer to the user-guide at http://www.codeigniter.com/userguide2/
(also available within the download package for offline use)
WARNING: CodeIgniter 2.x is no longer under development and only receives security patches until October 31st, 2015. Please update your installation to the latest CodeIgniter 3.x version available (upgrade instructions here).
hasby nyoba