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Symfony is a
free and open-source Free and open-source software (FOSS) is a term used to refer to groups of software consisting of both free software and open-source software where anyone is freely licensed to use, copy, study, and change the software in any way, and the source ...
PHP
web application framework A web framework (WF) or web application framework (WAF) is a software framework that is designed to support the development of web applications including web services, web resources, and web APIs. Web frameworks provide a standard way to build and ...
and a set of reusable PHP component libraries. It was published as free software on October 18, 2005, and released under the MIT license.


Goal

Symfony aims to speed up the creation and maintenance of web applications and to replace repetitive coding tasks. It's also 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. Symfony has a low performance overhead used with a bytecode cache.


Technical

Symfony was heavily inspired by the
Spring Framework The Spring Framework is an application framework and inversion of control container for the Java platform. The framework's core features can be used by any Java application, but there are extensions for building web applications on top of the Jav ...
. It makes heavy use of existing PHP open-source projects as part of the framework, including: * Propel or Doctrine as object-relational mapping layers * PDO
database abstraction layer A database abstraction layer (DBAL or DAL) is an application programming interface which unifies the communication between a computer application and databases such as SQL Server, IBM Db2, MySQL, PostgreSQL, Oracle or SQLite. Traditionally, all da ...
(1.1, with Doctrine and Propel 1.3) * PHPUnit, a unit testing framework * Twig, a templating engine * Swift Mailer, an e-mail library Symfony also makes use of its own components, which are freely available on the Symfony Components site for various other projects: * Symfony YAML, a
YAML YAML ( and ) (''see '') is a human-readable data-serialization language. It is commonly used for configuration files and in applications where data is being stored or transmitted. YAML targets many of the same communications applications as Ext ...
parser based upon Spyc * Symfony Event Dispatcher * Symfony Dependency Injector, a dependency injector * Symfony Templating, a templating engine


Sponsors

Symfony is sponsored by SensioLabs, a French software developer and professional services provider. The first name was Sensio Framework, and all classes were therefore prefixed with sf. Later on when it was decided to launch it as
open-source Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use the source code, design documents, or content of the product. The open-source model is a decentralized sof ...
framework A framework is a generic term commonly referring to an essential supporting structure which other things are built on top of. Framework may refer to: Computing * Application framework, used to implement the structure of an application for an op ...
, the brainstorming resulted in the name symfony (being renamed to Symfony from version 2 and on), which matches the existing theme and class name prefixes.


Real-world usage

* Symfony is used by the open-source Q&A service Askeet and many more applications, including Delicious website. * At one time it was used for 20 million users of Yahoo! Bookmarks. * As of February 2009, Dailymotion.com has ported part of its code to use Symfony, and is continuing the transition. * Symfony 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 eZ Publish (pronounced "easy publish") is an open-source enterprise PHP content management system that was developed by the Norwegian company Ibexa. eZ Publish is freely available under the GNU GPL version 2 license, as well as under proprietar ...
in version 5. *
Drupal Drupal () is a free and open-source web content management system (CMS) written in PHP and distributed under the GNU General Public License. Drupal provides an open-source back-end framework for at least 14% of the top 10,000 websites worldwid ...
8,
phpBB phpBB is an Internet forum package written in the PHP scripting language. The name "phpBB" is an abbreviation of ''PHP Bulletin Board''. Available under the GNU General Public License, phpBB is free and open-source. Features of phpBB includ ...
and a number of other large applications have incorporated components of Symfony. * Symfony 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. * Symfony components are also used in other web application frameworks including
Laravel Laravel is a free and open-source PHP web framework, created by Taylor Otwell and intended for the development of web applications following the model–view–controller (MVC) architectural pattern and based on Symfony. Some of the features o ...
, which is another full-stack framework, and
Silex Silex is any of various forms of ground stone. In modern contexts the word refers to a finely ground, nearly pure form of silica or silicate. In the late 16th century, it meant powdered or ground up " flints" (i.e. stones, generally meaning the ...
, which is a microframework. *
Vogue Paris The French edition of '' Vogue'' magazine, formerly called ''Vogue Paris'', is a fashion magazine that has been published since 1920. History 1920–54 The French edition of ''Vogue'' was first issued on 15 June 1920, the first editor-in-chief ...
's website is also built on the Symfony framework Symfony's own website has a comprehensive list of projects using Symfony and a showcase of websites built with Symfony.


Releases

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.symfony-docs/contributing/community/releases.rst at 4cd6dc2825924c9569621bf749f168a7ba2a235d · symfony/symfony-docs · GitHub
Github.com. Retrieved on 2016-03-16. The current LTS release is version 5.4 as per https://symfony.com/releases/5.4.


See also

*
Comparison of server-side web frameworks This is a comparison of notable web frameworks, software used to build and deploy web applications. General Basic information about each framework. Systems listed on a light purple background are no longer in active development. ASP.NET C+ ...
* Lime, a Test framework for Symfony 1 * Zend Framework


References


Further reading

*Potencier, Fabien. (2022).
Symfony 6: The Fast Track
'. Leanpub. *Potencier, Fabien and Zaninotto, François. (2007). ''The Definitive Guide to symfony.''
Apress Springer Nature or the Springer Nature Group is a German-British academic publishing company created by the May 2015 merger of Springer Science+Business Media and Holtzbrinck Publishing Group's Nature Publishing Group, Palgrave Macmillan, and Macm ...
. . *Potencier, Fabien. (2009). ''Practical symfony'' (2009). Sensio Labs Books. Doctrine edition, , Propel edition, , and Spanish edition available on lulu.com. *Fabien Potencier, Hugo Hamon: ''Symfony, Mieux développer en PHP avec symfony 1.2 et Doctrine'', Eyrolles 2009, , French *Tim Bowler, Wojciech Bancer (2009). ''Symfony 1.3 Web Application Development'',
Packt Packt is a publishing company founded in 2003 headquartered in Birmingham, UK,with offices in Mumbai, India. Packt primarily publishes print and electronic books and videos relating to information technology, including programming, web des ...
. .


External links

*
SymfonyCasts
{{Authority control Free software programmed in PHP PHP frameworks Software using the MIT license Web frameworks