Assertions to validate method input/output with nice error messages.

Loads environment variables from `.env` to `getenv()`, `$_ENV` and `$_SERVER` automagically.

CssToInlineStyles is a class that enables you to convert HTML-pages/files into HTML-pages/files with inline styles. This is very usefull when you're sending emails.

A small library for converting tokenized PHP source code into XML (and potentially other formats)

Provides mechanisms for walking through any arbitrary PHP variable

Provides tools to internationalize your application

Give thanks (in the form of a GitHub ★) to your fellow PHP package maintainers (not limited to Symfony components)!

Maps an HTTP request to a set of configuration variables

Executes commands in sub-processes

This component provides features unavailable in releases prior to PHP 7.0.

Symfony polyfill for the Mbstring extension

Provides a structured process for converting a Request into a Response

Defines an object-oriented layer for the HTTP specification

Finds files and directories via an intuitive fluent interface

Provides tools that allow your application components to communicate with each other by dispatching events and listening to them

Provides tools to ease debugging PHP code

Converts CSS selectors to XPath expressions

Eases the creation of beautiful and testable command line interfaces

[DEPRECATED] The ClassLoader component provides tools to autoload your classes and cache their locations for performance.

Comprehensive mailing tools for PHP

Library that helps with managing the version number of Git-hosted PHP projects

Provides a list of PHP built-in functions that operate on resources

Provides functionality to recursively process PHP variables

Allows reflection of object attributes, including inherited and non-public ones

Traverses array structures and object graphs to enumerate all referenced objects

Snapshotting of global state, factored out of PHPUnit into a stand-alone component

Provides the functionality to export PHP variables for visualization

Provides functionality that helps writing PHP code that has runtime-specific execution paths

Diff implementation

Provides the functionality to compare PHP values for equality.