Open-source alternatives to Php Defer

Événement is a very simple event dispatching library for PHP.

PHP 7.4 EventStore Implementation

Asynchronous WebSocket client

Ratchet is a PHP library for building asynchronous WebSocket servers that handle persistent, bidirectional communication between clients and the server. It provides a complete server-side WebSocket implementation, including protocol handshake negotiation, message framing over TCP, and an event-loop-based concurrency model that manages thousands of simultaneous connections without blocking. The library implements a connection registry pattern for tracking all active WebSocket sessions, enabling the server to broadcast or unicast messages to any connected client on demand. It relies on non-bloc

Reactive extensions for PHP

ReactPHP is an asynchronous runtime and event-driven I/O framework for PHP. It provides an environment for executing concurrent tasks through a central event loop implementation and reactor pattern, allowing applications to handle multiple operations without pausing the main execution thread. The project includes a specialized asynchronous socket library for TCP, UDP, and TLS communication, alongside a non-blocking HTTP server and client for streaming web requests and responses. Its capability surface covers asynchronous control flow via promises and fibers, non-blocking network connectivity

Swoole is a coroutine-based concurrency library and IO framework for PHP. It provides a system for building high-performance network servers and applications by bringing asynchronous, event-driven, and coroutine-based concurrency to the PHP runtime. The project distinguishes itself by implementing user-space coroutine scheduling and non-blocking IO interception, which transforms standard blocking network and file operations into asynchronous actions. It further enables high-speed data exchange across multiple PHP processes through shared memory management and specialized data structures. The

Event package for your app and domain

Workerman is an event-driven asynchronous socket framework for PHP. It provides the core components necessary to build high-concurrency network servers, including an asynchronous TCP framework, a coroutine library for task management, and dedicated implementations for HTTP and WebSocket servers. The project enables the development of specialized network services using custom frame-based communication protocols. It supports both inbound concurrent server implementation and asynchronous outbound connectivity to remote services. The framework covers a broad range of network programming capabili