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`!CodeIgniter`! is a `F33f`_`[free and open-source software`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Free_and_open-source_software]`_`f rapid `F33f`_`[web development framework`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Web_development_framework]`_`f, for use in building dynamic web sites with `F33f`_`[PHP`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=PHP]`_`f.`:cite-ref-5[`F5bf`_`[5`#cite-note-5]`_`f]

>>Contents

• `F0af`_`[Popularity`#popularity]`_`f
• `F0af`_`[Source code and license`#source-code-and-license]`_`f
• `F0af`_`[History`#history]`_`f
• `F0af`_`[See also`#see-also]`_`f
• `F0af`_`[References`#references]`_`f
• `F0af`_`[External links`#external-links]`_`f

-─

>>Popularity

CodeIgniter is loosely based on the popular `F33f`_`[model–view–controller`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Model–view–controller]`_`f (MVC) development pattern. While controller classes are a necessary part of development under CodeIgniter, models and views are optional.`:cite-ref-6[`F5bf`_`[6`#cite-note-6]`_`f] CodeIgniter can be also modified to use Hierarchical Model View Controller (HMVC`:cite-ref-7[`F5bf`_`[7`#cite-note-7]`_`f]) which allows the 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.`:cite-ref-8[`F5bf`_`[8`#cite-note-8]`_`f]`:cite-ref-9[`F5bf`_`[9`#cite-note-9]`_`f]`:cite-ref-10[`F5bf`_`[10`#cite-note-10]`_`f] In a critical take on PHP frameworks in general, PHP creator `F33f`_`[Rasmus Lerdorf`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Rasmus_Lerdorf]`_`f spoke at `F33f`_`[frOSCon`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Bonn-Rhein-Sieg_University_of_Applied_Sciences_(BRSU)]`_`f in August 2008, noting that he liked CodeIgniter "`*because it is faster, lighter and the least like a framework.`*"`:cite-ref-11[`F5bf`_`[11`#cite-note-11]`_`f]

>>Source code and license

CodeIgniter's source code is maintained at `F33f`_`[GitHub`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=GitHub]`_`f,`:cite-ref-12[`F5bf`_`[12`#cite-note-12]`_`f] and as of the preview version 3.0rc, is certified open source software licensed with the `F33f`_`[MIT License`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=MIT_License]`_`f. Versions of CodeIgniter prior to 3.0.0 are licensed under a proprietary Apache/BSD-style open source license.`:cite-ref-13[`F5bf`_`[13`#cite-note-13]`_`f]

A 2011 decision to switch licensing to the `F33f`_`[Open Software License (OSL)`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Open_Software_License]`_`f sparked some community controversy,`:cite-ref-14[`F5bf`_`[14`#cite-note-14]`_`f] especially about the `F33f`_`[GPL`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=GNU_General_Public_License]`_`f incompatibility of the new license, to which EllisLab has responded with a series of articles entitled Software License Awareness Week.`:cite-ref-15[`F5bf`_`[15`#cite-note-15]`_`f]

>>History

The first public version of CodeIgniter was released by `F33f`_`[EllisLab`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=EllisLab]`_`f on February 28, 2006.`:cite-ref-16[`F5bf`_`[16`#cite-note-16]`_`f]

On July 9, 2013, `F33f`_`[EllisLab`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=EllisLab]`_`f 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.`:cite-ref-17[`F5bf`_`[17`#cite-note-17]`_`f] On October 6, 2014, EllisLab announced that CodeIgniter would continue development under the stewardship of the `F33f`_`[British Columbia Institute of Technology`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=British_Columbia_Institute_of_Technology]`_`f.`:cite-ref-ellislab-ci-bcit-18-0[`F5bf`_`[18`#cite-note-ellislab-ci-bcit-18]`_`f] As of October 23, 2019, with the CodeIgniter Foundation taking the reins, CodeIgniter is no longer under the care of the British Columbia Institute of Technology.`:cite-ref-19[`F5bf`_`[19`#cite-note-19]`_`f]

CodeIgniter 4 was released On February 24, 2020,`:cite-ref-20[`F5bf`_`[20`#cite-note-20]`_`f] the birthday of Jim Parry, the project lead of CodeIgniter 4, and who died on January 15, 2020.`:cite-ref-21[`F5bf`_`[21`#cite-note-21]`_`f] Since then, the project continues with another lead.

>>See also

• `F33f`_`[Comparison of web frameworks`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Comparison_of_server-side_web_frameworks]`_`f

>>References

`:cite-note-1`!1.`! "The CodeIgniter Foundation is finally here". 2019-10-23. Retrieved 2020-06-10.
`:cite-note-wikidata-aacb57aabd807bc61d149f3b7d8002750e7f0761-v20-2`!2.`! "CodeIgniter 4.6.1".
`:cite-note-ci-requirements-3`!3.`! "Server Requirements — CodeIgniter 3.1.11 documentation". `*www.codeigniter.com`*. Archived from the original on 2019-07-11. Retrieved 2017-06-23. Alt URL
`:cite-note-ci4-requirements-4`!4.`! "Server Requirements — CodeIgniter 4.x documentation". `*www.codeigniter.com`*.
`:cite-note-5`!5.`! `F0af`_`[↑`#cite-ref-5]`_`f "CodeIgniter – The lightweight of the PHP frameworks". `*IONOS Digitalguide`*. Retrieved 2022-03-30.
`:cite-note-6`!6.`! `F0af`_`[↑`#cite-ref-6]`_`f "CodeIgniter User Guide: Models". CodeIgniter.com. Archived from the original on 2015-02-03. Retrieved 2015-02-03.
`:cite-note-7`!7.`! `F0af`_`[↑`#cite-ref-7]`_`f "wiredesignz / codeigniter-modular-extensions-hmvc — Bitbucket". `*bitbucket.org`*. Retrieved 2016-05-05.
`:cite-note-8`!8.`! `F0af`_`[↑`#cite-ref-8]`_`f "7 Best PHP Frameworks". TISindia.com. 2014-02-12.
`:cite-note-9`!9.`! `F0af`_`[↑`#cite-ref-9]`_`f "PHP Frameworks Benchmarks". Sellersrank.com. Archived from the original on 2014-12-15. Retrieved 2014-08-05.
`:cite-note-10`!10.`! `F0af`_`[↑`#cite-ref-10]`_`f "Benchmark update: Cake vs. CodeIgniter vs. Kohana". Pr0digy.com. 2008-09-03. Archived from the original on 2014-06-14. Retrieved 2014-08-05.
`:cite-note-11`!11.`! `F0af`_`[↑`#cite-ref-11]`_`f "Rasmus Lerdorf: PHP Frameworks? Think Again". Sitepoint.com. 2008-08-29. Retrieved 2014-08-05.
`:cite-note-12`!12.`! `F0af`_`[↑`#cite-ref-12]`_`f "bcit-ci/CodeIgniter · GitHub". Retrieved 2015-02-03.
`:cite-note-13`!13.`! `F0af`_`[↑`#cite-ref-13]`_`f "CodeIgniter License Agreement". CodeIgniter.com. Retrieved 2016-02-28.
`:cite-note-14`!14.`! `F0af`_`[↑`#cite-ref-14]`_`f "CodeIgniter changes license to OSL 3.0?". CodeIgniter.com Forum. 2011-10-21. Archived from the original on 2014-08-08. Retrieved 2014-08-05.
`:cite-note-15`!15.`! `F0af`_`[↑`#cite-ref-15]`_`f "Software License Awareness Week". EllisLab.com. 2011-10-31. Archived from the original on 2016-03-22. Retrieved 2012-12-28.
`:cite-note-16`!16.`! `F0af`_`[↑`#cite-ref-16]`_`f "CodeIgniter User Guide: Change Log". CodeIgniter.com. Archived from the original on 2016-03-22. Retrieved 2016-03-21.
`:cite-note-17`!17.`! `F0af`_`[↑`#cite-ref-17]`_`f "EllisLab Seeking New Owner for CodeIgniter - Blog". `*ExpressionEngine`*.
`:cite-note-ellislab-ci-bcit-18`!18.`! `F0af`_`[↑`#cite-ref-ellislab-ci-bcit-18-0]`_`f "Your Favorite PHP Framework, CodeIgniter, Has a New Home". `*EllisLab Blog`*. EllisLab. Archived from the original on 17 October 2014. Retrieved 16 October 2014.
`:cite-note-19`!19.`! `F0af`_`[↑`#cite-ref-19]`_`f "The CodeIgniter Foundation is finally here". 2019-10-23. Retrieved 2020-06-10.
`:cite-note-20`!20.`! `F0af`_`[↑`#cite-ref-20]`_`f "CodeIgniter 4.0 is here!". Retrieved 2020-02-24.
`:cite-note-21`!21.`! `F0af`_`[↑`#cite-ref-21]`_`f "Important News about Jim Parry and the Project". `*forum.codeigniter.com`*. Retrieved 2020-01-15.

>>External links

• Official website
• Codeigniter en español

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