The Timeline of Major CodeIgniter Releases

CodeIgniter, one of the most popular PHP frameworks, has a rich history marked by several key releases. This lightweight and powerful framework has evolved significantly since its inception. Here’s a detailed timeline of CodeIgniter’s release dates and the major milestones in its development.

History of CodeIgniter

• February 28, 2006
  CodeIgniter 1.0
  CodeIgniter was first released by EllisLab, revolutionizing PHP development with its simplicity and performance. It quickly gained a following due to its ease of use and straightforward approach.
• October 1, 2007
  CodeIgniter 1.5.4
  This version introduced significant improvements, including better support for modular applications, making it easier for developers to build complex systems.
• August 2008
  CodeIgniter 1.6.1
  Focused on bug fixes and minor improvements, this release aimed to enhance the stability and performance of the framework.
• October 18, 2009
  CodeIgniter 1.7.2
  This version brought enhanced security features and performance optimizations, solidifying CodeIgniter’s reputation as a reliable framework for PHP developers.
• January 28, 2011
  CodeIgniter 2.0.0
  A major milestone, this release marked the introduction of numerous features, including enhanced session handling and improved libraries for working with files, forms, and emails.
• June 29, 2012
  CodeIgniter 2.1.3
  This version focused on further improvements in security, performance, and compatibility with newer PHP versions.
• October 31, 2014
  CodeIgniter 3.0.0 RC1
  After EllisLab announced they would no longer maintain CodeIgniter, BCIT took over its development. The release candidate for version 3.0.0 included numerous enhancements and bug fixes.
• March 30, 2015
  CodeIgniter 3.0.0
  The official release of CodeIgniter 3.0.0 was a significant update, introducing improved database support, query caching, and session management.
• September 22, 2015
  CodeIgniter 3.0.3
  This version included important security updates and several bug fixes, maintaining the framework’s reliability and security.
• September 19, 2019
  CodeIgniter 3.1.11
  The final release in the 3.x series, focusing on bug fixes and ensuring compatibility with PHP 7.x.
• February 24, 2020
  CodeIgniter 4.0.0
  A major leap forward, CodeIgniter 4 was a complete rewrite of the framework. It introduced modern features such as namespaces, better organization, and support for PHP 7.2 and above.

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