# Symfony: PHP Framework and Component Library for Web and Console Applications > Symfony is a PHP framework and a set of reusable components that power thousands of web applications, including projects built on Laravel, Drupal, and other PHP platforms. It publishes Long Term Support versions, follows semantic versioning strictly, and installs via Composer. **symfony/symfony** — The Symfony PHP framework - Repository: https://github.com/symfony/symfony - Website: https://symfony.com - Stars: 31,167 · Forks: 9,890 - Language: PHP - License: MIT - Published: 2026-09-10 · Updated: 2026-09-10 · Language: en - Canonical page: https://hysenlabs.com/projects/symfony-symfony ## What Symfony is and how it differs from a batteries-included framework Symfony is two things at once: a full PHP framework for building web and console applications, and a collection of standalone PHP components that other projects can adopt individually. The README states it is "used by thousands of web applications and most of the popular PHP projects". This second dimension, the component library, is what distinguishes Symfony from frameworks that are only consumable as a whole. Popular PHP projects adopt individual Symfony components without using the full framework: the HTTP Foundation component, the Console component, and the EventDispatcher are used independently across the PHP ecosystem. The README describes the target as both "web and console applications", which covers HTTP-serving applications and command-line tools within the same architecture. ## Installing Symfony with Composer Symfony installs through Composer, PHP's dependency manager. The README links to a setup guide at symfony.com/doc/current/setup.html. The project follows the Composer convention: adding the framework as a dependency installs the components it needs. The repository root includes a `composer.json` that defines the monorepo's package structure. The `phpunit` file in the root is a wrapper script for running the test suite. A `link` script assists with symlinking local package paths during development. For developers new to the framework, the README recommends the Getting Started guide at symfony.com/doc/current/page_creation.html and the Symfony Demo application at github.com/symfony/symfony-demo, which is a complete reference application built with the framework. The book "Symfony The Fast Track" at symfony.com/book is also cited as a guide for learning Symfony in practice. ## Semantic versioning and the LTS release policy The README states that Symfony "follows the semantic versioning strictly, publishes Long Term Support (LTS) versions and has a release process that is predictable and business-friendly". Three version branches are currently maintained: v6.4.46 (LTS, released 2026-09-15), v7.4.19 (released 2026-09-15), and v8.1.7 (released 2026-09-15). The default branch in the repository is `8.2`, which is the current development branch for the next minor version. LTS releases receive security fixes and bug fixes for a longer period than standard releases; this policy allows teams to upgrade at their own pace without abandoning security support. The UPGRADE-8.0.md, UPGRADE-8.1.md, and UPGRADE-8.2.md files in the repository document the breaking changes and migration steps for each major-to-minor transition. ## The monorepo structure and splitsh The Symfony repository is a monorepo: all components and bundles live under the `src/` directory in a single repository. The `splitsh.json` file at the root configures the splitsh-lite tool, which automatically splits each component into its own read-only Git repository for individual Composer package installation. This means a project that uses only the Console component does not need to pull in the entire monorepo; it installs only `symfony/console` from the split repository. The `CHANGELOG-8.0.md` and `CHANGELOG-8.1.md` files in the root track changes at the framework level rather than per component. The `.agents/` directory at the root suggests the project has added AI agent-assisted workflows to its contributor tooling. ## Code quality tooling: PHPStan, Psalm, and PHP-CS-Fixer The repository enforces code quality through multiple static analysis layers. The `phpstan.dist.neon` file configures PHPStan, a PHP static analyser. The `psalm.xml` file configures Psalm, another static analysis tool. Both catch type errors and potential bugs before runtime. Code style is enforced by `php-cs-fixer` via `.php-cs-fixer.dist.php` and by `twig-cs-fixer` via `.twig-cs-fixer.dist.php` for Twig templates. The `phpunit.xml.dist` configuration drives the test suite. The `.codespellrc` file runs a spell checker across the codebase. This stack of four quality tools (two type checkers, two formatters) is more rigorous than a typical open-source PHP project, which reflects Symfony's role as infrastructure that other projects depend on. The CONTRIBUTING.md file describes the contribution process, and a `.git-blame-ignore-revs` file excludes mass-formatting commits from git blame output. ## Symfony versus Laravel: two approaches to PHP application development Laravel is the most commonly cited alternative to Symfony for PHP web development. The README itself does not mention Laravel, but "symfony vs laravel" is one of the top-searched phrases about the project. The qualitative difference is one of philosophy: Symfony is a component-based framework that favours explicit configuration and gives developers control over each layer; Laravel is an opinionated framework that ships with integrated solutions for routing, authentication, queues, and notifications out of the box. Symfony components are used inside Laravel itself: Laravel's HTTP Foundation layer and Console component are built on Symfony equivalents. A team that needs to mix and match components, or that is building a platform other developers will extend (as Drupal does), generally prefers Symfony. A team that wants to ship a product quickly with minimal configuration decisions generally prefers Laravel. ## Community, security reporting, and the MIT licence Symfony is led by the Symfony Core Team and supported by volunteer contributors. The README links to GitHub Discussions and a Slack workspace for community support. Security vulnerabilities should be reported through the private disclosure procedure documented at symfony.com/security rather than as public GitHub issues. The README mentions that Symfony 8.2 is seeking backers at symfony.com/backers, indicating the project accepts financial support. The MIT licence permits commercial use, modification, and distribution with only attribution required. The last push was on 2026-09-26 and three version branches received patch releases on 2026-09-15: v6.4.46, v7.4.19, and v8.1.7. The simultaneous patch release cadence across three branches is a practical outcome of the LTS policy. ## Conclusion Symfony suits teams building large PHP applications that need a predictable upgrade path, LTS version support, and the flexibility of a component-based architecture. It is the right foundation when the project already uses other frameworks that rely on Symfony components, such as Drupal or API Platform. It is not the best fit for small teams that want to ship a product quickly with minimal configuration: Laravel's batteries-included approach reaches a working application faster. Before adopting Symfony, confirm which version line fits your support requirements: v6.4 is an LTS branch, v7.4 is a standard release, and v8.x is the current development series. The last push was on 2026-09-26 and v8.1.7 was released on 2026-09-15. ## FAQ ### What is Symfony used for? Symfony is used for building PHP web and console applications. The README states it is used by thousands of web applications and most popular PHP projects. It also provides standalone PHP components that other frameworks and CMS platforms adopt individually. ### How do I install Symfony? Symfony installs via Composer, PHP's dependency manager. The README links to the setup guide at symfony.com/doc/current/setup.html and the Getting Started guide at symfony.com/doc/current/page_creation.html for new users. ### Is Symfony still relevant? The README states that Symfony is used by thousands of web applications and most popular PHP projects. Three version branches received patch releases on 2026-09-15: v6.4 (LTS), v7.4, and v8.1. The last push was on 2026-09-26. ## Sources - [License: MIT](https://github.com/symfony/symfony/blob/8.2/LICENSE) - [Project website](https://symfony.com) - [README](https://github.com/symfony/symfony/blob/8.2/README.md) - [Releases](https://github.com/symfony/symfony/releases) - [symfony/symfony on GitHub](https://github.com/symfony/symfony) --- Hysen Labs editorial analysis, written from the project's own repository and release notes. Cite the canonical page: https://hysenlabs.com/projects/symfony-symfony