WARNING: You are browsing the documentation for Symfony 2.6 which is not maintained anymore. Consider upgrading your projects to Symfony 5.1.

Symfony Components

The Components implement common features needed to develop websites. They are the foundation of the Symfony full-stack framework, but they can also be used standalone even if you don't use the framework as they don't have any mandatory dependencies.

2.6 version

Maintained

3.4 4.4 5.1 current 5.0 5.2 master

Unmaintained

2.0 2.1 2.2 2.3 2.4 2.5 2.7 2.8 3.0 3.1 3.2 3.3 4.0 4.1 4.2 4.3

The Components¶

How to Install and Use the Symfony Components
ClassLoader
- The ClassLoader Component
- The PSR-0 Class Loader
- The PSR-4 Class Loader
- MapClassLoader
- Cache a Class Loader
- The Class Map Generator
Config
- The Config Component
- Loading Resources
- Caching based on Resources
- Defining and Processing Configuration Values
Console
- The Console Component
- Using Console Commands, Shortcuts and Built-in Commands
- Building a single Command Application
- Changing the Default Command
- Understanding how Console Arguments Are Handled
- Using Events
- Using the Logger
- The Console Helpers
CssSelector
- The CssSelector Component
Debug
- The Debug Component
- Debugging a Class Loader
DependencyInjection
- The DependencyInjection Component
- Types of Injection
- Introduction to Parameters
- Working with Container Service Definitions
- How to Inject Instances into the Container
- Compiling the Container
- Working with Tagged Services
- Using a Factory to Create Services
- Configuring Services with a Service Configurator
- Managing Common Dependencies with Parent Services
- Advanced Container Configuration
- Lazy Services
- Container Building Workflow
DomCrawler
- The DomCrawler Component
EventDispatcher
- The EventDispatcher Component
- The Container Aware Event Dispatcher
- The Generic Event Object
- The Immutable Event Dispatcher
- The Traceable Event Dispatcher
Expression Language
- The ExpressionLanguage Component
- The Expression Syntax
- Extending the ExpressionLanguage
- Caching Expressions Using Parser Caches
Filesystem
- The Filesystem Component
- LockHandler
Finder
- The Finder Component
Form
- The Form Component
- Form Events
- Creating a custom Type Guesser
HttpFoundation
- The HttpFoundation Component
- Session Management
- Configuring Sessions and Save Handlers
- Testing with Sessions
- Integrating with Legacy Sessions
- Trusting Proxies
HttpKernel
- The HttpKernel Component
Intl
- The Intl Component
OptionsResolver
- The OptionsResolver Component
Process
- The Process Component
PropertyAccess
- The PropertyAccess Component
Routing
- The Routing Component
- How to Match a Route Based on the Host
Security
- The Security Component
- The Firewall and Authorization
- Authentication
- Authorization
- Securely Comparing Strings and Generating Random Numbers
Serializer
- The Serializer Component
Stopwatch
- The Stopwatch Component
Templating
- The Templating Component
Translation
- The Translation Component
- Using the Translator
- Adding Custom Format Support
VarDumper
- The VarDumper Component
- Advanced Usage of the VarDumper Component
Yaml
- The Yaml Component
- The YAML Format

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.