Developer Network™ There is always a great deal of Joomla! development activity underway and communicating with other developers in the community is essential. This site is a resource for anyone looking to build or maintain software based on the Joomla! platform.
Where to Start
Source Code Management
About
Coding Standards
Client Side Syntax Style Guides
Appendices
Before we start talking about what Joomla! code should look like, it is appropriate to look at how and where the source code is stored. All serious software projects, whether driven by an Open Source community or developed within a company for proprietary purposes will manage the source code is some sort of source or version management system. The Joomla! project uses a Distributed Version Control System (DVCS) called Git hosted at GitHub.
The Joomla! Framework
The Joomla! Framework is a PHP framework that is designed to serve as a foundation for not only web applications (like a CMS) but other types of software such as command line applications. The files that form the Joomla! Framework are stored in a Distributed Version Control System (DVCS) called Git hosted at GitHub.
You can learn about how to get the Joomla Framework source code from the GitHub organisation, https://github.com/joomla-framework.
Because Git treats the concepts of file revision numbers differently than Subversion, the repository revision number is not required in files (that is, the @version tag is not necessary).
The Joomla! CMS
The Joomla! CMS is a Content Management System (CMS) which enables you to build Web sites and powerful online applications. It's a free and OpenSource software, distributed under the GNU General Public License version 2 or later. The files that form the Joomla! CMS are stored in a Distributed Version Control System (DVCS) called Git hosted at GitHub.
You can learn about how to get the Joomla CMS source code from the Git repository, https://github.com/joomla/joomla-cms.
Because Git treats the concepts of file revision numbers differently than Subversion, the repository revision number is not required in files (that is, the @version tag is not necessary).
Compliance Tool
The standards in this manual have been adopted across the Joomla project, including the Joomla! Framework, the Joomla! CMS and any other applications or extensions maintained by the project. These standards apply to source code, tests and (where applicable) documentation.
A custom Joomla sniff standard for PHP files is maintained by the Joomla! project and available from the coding standards repository. The Sniff is based on the standard outlined in this document. For more information about how code standards are enforced see the analysis appendix of the manual. For information on using the Sniff see the documentation stored in its repository.