The Symfony PHP framework

Dependency Manager for PHP

Faker is a PHP library that generates fake data for you

Guzzle, an extensible PHP HTTP client

Sends your logs to files, sockets, inboxes, databases and various web services

The PHP Unit Testing framework.

A PHP parser written in PHP

PHP Image Processing

A pure PHP library for reading and writing spreadsheet files

Abstraction for local and remote filesystems

PHP Static Analysis Tool - discover bugs in your code without running it!

PHP Email address validator

Doctrine Inflector is a small library that can perform string manipulations with regard to uppercase/lowercase and singular/plural forms of words.

Base library for a lexer that can be used in Top-Down, Recursive Descent Parsers.

Mobile_Detect is a lightweight PHP class for detecting mobile devices (including tablets). It uses the User-Agent string combined with specific HTTP headers to detect the mobile environment.

Doctrine Object Relational Mapper (ORM)

Eases the creation of beautiful and testable command line interfaces

Comprehensive mailing tools for PHP

Doctrine Database Abstraction Layer

Instant Upgrades and Automated Refactoring of any PHP 5.3+ code

A PSR-5 based resolver of Class names, Types and Structural Element Names

Library that provides collection, processing, and rendering functionality for PHP code coverage information.

Create deep copies (clones) of your objects

Defines an object-oriented layer for the HTTP specification

Highly opinionated mocking framework for PHP 5.3+