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For musical composition and related terms, see Symphony (disambiguation).
Symfony project.png
Symfony2 Standard Edition welcome page
Original author(s) Fabien Potencier
Developer(s) Symfony contributors, SensioLabs
Initial release 22 October 2005 (2005-10-22)
Stable release 2.7.5[1] / 25 September 2015 (2015-09-25)
Development status Active
Written in PHP
Operating system Cross-platform
Type Web application framework
License MIT license

Symfony is a PHP web application framework for MVC applications. Symfony is free software and released under the MIT license. The website launched on October 18, 2005.[2]

Symfony should not be confused with Symphony CMS.


Symfony aims to speed up the creation and maintenance of web applications and to replace repetitive coding tasks.

Symfony has a low performance overhead used with a bytecode cache.

Symfony is aimed at building robust applications in an enterprise context, and aims to give developers full control over the configuration: from the directory structure to the foreign libraries, almost everything can be customized. To match enterprise development guidelines, Symfony is bundled with additional tools to help developers test, debug and document projects.[citation needed]


Symfony was heavily inspired by other web application frameworks such as Ruby on Rails, Django, and Spring.[3]

Symfony makes heavy use of existing PHP open-source projects as part of the framework, including:

Symfony also makes use of its own components, which are freely available on the Symfony Components site for various other projects:

Using plugins, Symfony is able to support JavaScript frameworks and many more PHP projects, such as:

The inclusion and implementation of a JavaScript library is left to the user.


Symfony is sponsored by SensioLabs, a French software developer and professional services provider.[5] The first name was Sensio Framework,[6] and all classes were prefixed with sf. Later on when it was decided to launch it as open source framework, the brainstorming resulted in the name symfony (being renamed to Symfony from version 2 and on), the name which depicts[clarification needed] the theme and class name prefixes.[7]

Real-world usage[edit]

  • Symfony is used by the open-source Q&A service Askeet and many more applications, including Delicious.[8]
  • At one time it was used for 20 million users of Yahoo! Bookmarks.[9]
  • As of February 2009, has ported part of its code to use Symfony, and is continuing the transition.[10]
  • Symfony2 is used by OpenSky, a social shopping platform, and the Symfony framework is also used by the massively multiplayer online browser game eRepublik, and by the content management framework eZ Publish in version 5.[11]
  • Drupal 8 also has incorporated components of Symfony in its next release.[12]
  • Symfony2 is also used by Meetic, one of the largest online dating platforms in the world, on most of its websites for implementing its business logic in the backend.[13]
  • Multiple Content Management Systems have embraced Symfony in different ways[14]
  • Symfony components are also used in other web application frameworks, including Laravel which is another full stack framework, as well as Silex which is microframework.[15]


Color Meaning
Red Release no longer supported
Green Release still supported
Blue Future release

Symfony manages its releases through a time-based model; a new Symfony release comes out every six months: one in May and one in November.
This release process has been adopted as of Symfony 2.2, and all the "rules" explained in this document must be strictly followed as of Symfony 2.4.

The standard version of Symfony is maintained for eight months, whereas long-term support (LTS) versions are supported for three years. A new LTS release is published biennially.[16]

Version Release date Support PHP version End of maintenance Notes
1.0 January 2007 Three years ≥ 5.0 January 2010
1.1 June 2008 One year ≥ 5.1 June 2009 Security-related patches were applied until June 2010
1.2 December 2008 One year ≥ 5.2 November 2009
1.3 November 2009 One year ≥ 5.2.4 November 2010
1.4 November 2009 Three years ≥ 5.2.4 November 2012 LTS version. 1.4 is identical to 1.3, but it does not support the 1.3 deprecated features.[17]
2.0[18] July 2011[19] ≥ 5.3.2 March 2013 Last 2.0.x release was Symfony 2.0.25[20]
2.1[21] September 2012 Eight months ≥ 5.3.3 June 2013 More components are part of the stable API.
2.2 March 2013 Eight months ≥ 5.3.3 November 2013 Various new features.[22]
2.3 June 2013 Three years ≥ 5.3.3 May 2016 The first LTS release, only three months development, normally six months.[23]
2.4 November 2013 Eight months ≥ 5.3.3 July 2014 The first 2.x branch release with complete backwards compatibility.[24]
2.5 May 2014 Eight months ≥ 5.3.3 January 2015
2.6 November 2014 Eight months ≥ 5.3.3 July 2015
2.7 May 2015 Three years ≥ 5.3.9 May 2018 LTS release.
2.8 November 2015 Three years ≥ 5.3.9 November 2018
3.0 November 2015 Eight months ≥ 5.5.9 July 2016
3.1 May 2016 Eight months ≥ 5.?.? January 2017

See also[edit]


  1. ^ "Symfony 2.7.5 released". Symfony Blog. Retrieved 28 September 2015. 
  2. ^ Symfony Web PHP Framework » Blog » Two years of symfony
  3. ^ High Performance PHP Framework for Web Development - Symfony. Retrieved on 2014-05-30.
  4. ^ The symfony and Doctrine book
  5. ^ Learn symfony: A Beginner's Tutorial
  6. ^ Symfony framework forum: General discussion => New symfony tagline brainstorming
  7. ^ Comments by Sensio Owner
  8. ^ Symfony Blog - Delicious Preview built with symfony
  9. ^ Symfony Blog - Yahoo! Bookmarks uses symfony
  10. ^ Symfony Blog - Dailymotion, powered by symfony
  11. ^ Symfony2 meets eZ Publish 5. Symfony (2012-07-02). Retrieved on 2014-05-30.
  12. ^ Symfony2 meets Drupal 8. Symfony (2012-03-22). Retrieved on 2014-05-30.
  13. ^
  14. ^ Symfony and Content Management: Comparing Bolt, Drupal 8 and eZ Platform. (2015-07-09). Retrieved on 2015-08-01.
  15. ^ - Projects using Symfony
  16. ^ symfony-docs/contributing/code/releases.rst at bdbe71c64fc7ff472b7bb95f2cbc33621c8f3ef0 · symfony/symfony-docs · GitHub. Retrieved on 2014-05-30.
  17. ^ Symfony Blog - About symfony 1.3 and 1.4
  18. ^ Symfony blog - Why will Symfony 2.0 finally use PHP 5.3?
  19. ^ Symfony blog - Symfony2 release
  20. ^ 2.0.23 released. Symfony (2013-03-20). Retrieved on 2014-05-30.
  21. ^ Symfony 2.1.0 released
  22. ^ 2.2.0. Symfony (2013-03-01). Retrieved on 2014-05-30.
  23. ^ 2.3.0, the first LTS, is now available. Symfony (2013-06-03). Retrieved on 2014-05-30.
  24. ^ 2.4.0 released. Symfony (2013-12-03). Retrieved on 2014-05-30.

Further reading[edit]

External links[edit]