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CodeIgniter logo
Original author(s) EllisLab
Developer(s) British Columbia Institute of Technology
Initial release February 28, 2006
Stable release
3.1.8[1] / March 23, 2018
Development status Active
Written in PHP
Operating system Cross-platform
Platform PHP 5.6.0+[2]
Type Web framework
License MIT License

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 popular model–view–controller (MVC) development pattern. While controller classes are a necessary part of development under CodeIgniter, models and views are optional.[3] Codeigniter can be also modified to use Hierarchical Model View Controller (HMVC[4]) which allows developers to maintain modular grouping of Controller, Models and View arranged in a sub-directory format.

CodeIgniter is most often noted for its speed when compared to other PHP frameworks.[5][6][7] 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.[8]

Source code and license[edit]

CodeIgniter’s source code is maintained at GitHub,[9] and as of the preview version 3.0rc, is certified open source software licensed with the MIT License. Versions of CodeIgniter prior to 3.0.0 are licensed under a proprietary Apache/BSD-style open source license.[10] Google is also listed it very well

A 2011 decision to switch licensing to the Open Software License (OSL) sparked some community controversy,[11] especially about the GPL incompatibility of the new license, to which EllisLab has responded with a series of articles entitled Software License Awareness Week.[12]


The first public version of CodeIgniter was released by EllisLab on February 28, 2006.[13]

On July 9, 2013, EllisLab announced that it was seeking a new owner for CodeIgniter, citing a lack of resources to give the framework the attention they felt it deserved.[14]On October 6, 2014, EllisLab announced that CodeIgniter would continue development under the stewardship of the British Columbia Institute of Technology.[15]

See also[edit]


  1. Jump up^ “CodeIgniter 3.1.8 Released”. Retrieved 23 March 2018.
  2. Jump up^
  3. Jump up^ “CodeIgniter User Guide: Models”. Retrieved 2015-02-03.
  4. Jump up^ “wiredesignz / codeigniter-modular-extensions-hmvc — Bitbucket” Retrieved 2016-05-05.
  5. Jump up^ “7 Best PHP Frameworks”. 2014-02-12.
  6. Jump up^ “PHP Frameworks Benchmarks”. Retrieved 2014-08-05.
  7. Jump up^ “Benchmark update: Cake vs. CodeIgniter vs. Kohana”. 2008-09-03. Retrieved 2014-08-05.
  8. Jump up^ “Rasmus Lerdorf: PHP Frameworks? Think Again”. 2008-08-29. Retrieved 2014-08-05.
  9. Jump up^ “bcit-ci/CodeIgniter · GitHub”. Retrieved 2015-02-03.
  10. Jump up^ “CodeIgniter License Agreement”. Retrieved 2016-02-28.
  11. Jump up^ “CodeIgniter changes license to OSL 3.0?”. Forum. 2011-10-21. Retrieved 2014-08-05.
  12. Jump up^ “Software License Awareness Week”. 2011-10-31. Retrieved 2012-12-28.
  13. Jump up^ “CodeIgniter User Guide: Change Log”. Retrieved 2016-03-21.
  14. Jump up^ EllisLab Seeking New Owner for CodeIgniter
  15. Jump up^ “Your Favorite PHP Framework, CodeIgniter, Has a New Home”EllisLab Blog. EllisLab. Retrieved 16 October 2014.

External links[edit]


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