The Process component executes commands in sub-processes.

The Yaml component loads and dumps YAML files.

This component provides functions unavailable in releases prior to PHP 8.0.

Provides utilities for PHPUnit, especially user deprecation notices management.

The OptionsResolver component is array_replace() on steroids. It allows you to create an options system with required options, defaults, validation (type, value), normalization and more.

The DependencyInjection component allows you to standardize and centralize the way objects are constructed in your application.

A set of cache abstractions extracted out of the Symfony components

The Config component helps you find, load, combine, autofill and validate configuration values of any kind, whatever their source may be (YAML, XML, INI files, or for instance a database).

The DomCrawler component eases DOM navigation for HTML and XML documents.

The Console component eases the creation of beautiful and testable command line interfaces.