Event-driven, non-blocking I/O with PHP.

ReactPHP is a low-level library for event-driven programming in PHP. At its core is an event loop, on top of which it provides low-level utilities, such as: Streams abstraction, async dns resolver, network client/server, http client/server, interaction with processes. Third-party libraries can use these components to create async network clients/servers and more.

The event loop is based on the reactor pattern (hence the name) and strongly inspired by libraries such as EventMachine (Ruby), Twisted (Python) and Node.js (V8).

Design goals

• Usable with a bare minimum of PHP extensions, add more extensions to get better performance.
• Provide a standalone event-loop component that can be re-used by other libraries.
• Decouple parts so they can be replaced by alternate implementations.

ReactPHP is non-blocking by default. Use workers for blocking I/O.

Core Components

• EventLoop ReactPHP's core reactor event-loop. Read the documentation

• Stream Event-driven readable and writable streams for non-blocking I/O in ReactPHP. Read the documentation

• Promise Promises/A implementation for PHP. Read the documentation

Network Components

• Socket Async, streaming plaintext TCP/IP and secure TLS socket server and client connections for ReactPHP. Read the documentation

• Datagram Event-driven UDP client and server sockets for ReactPHP. Read the documentation

Protocol Components

• HTTP Event-driven, streaming plaintext HTTP and secure HTTPS server for ReactPHP. Read the documentation

• HTTPClient Event-driven, streaming HTTP client for ReactPHP. Read the documentation

• DNS Async DNS resolver for ReactPHP. Read the documentation

Utility Components

• Cache Async caching for ReactPHP. Read the documentation

• ChildProcess Library for executing child processes. Read the documentation

• PromiseTimer Trivial timeout implementation for ReactPHP's Promise lib. Read the documentation

• PromiseStream The missing link between Promise-land and Stream-land, built on top of ReactPHP. Read the documentation

Getting started

ReactPHP consists of individual components. This means that instead of installing something like a "ReactPHP framework", you actually pick only the components that you need.

The recommended way to install these components is through Composer. New to Composer?

For example, this may look something like this:

$ composer require react/event-loop react/http

For more details, check out ReactPHP's homepage for quickstart examples and usage details.

Documentation

Superficial documentation can be found in the README files of the individual components. See vendor/react/*/src/README.md.

Community

Check out #reactphp on irc.freenode.net. Also follow @reactphp on twitter.

Tests

To run the test suite, you first need to clone this repo and then install all dependencies through Composer:

$ composer install

To run the test suite, go to the project root and run:

$ php vendor/bin/phpunit

License

MIT, see LICENSE.