折言(origami-lang) 是一门创新性的融合型脚本语言，深度结合 PHP 的快速开发基因与 Go 的高效并发模型。它以「折叠」为设计哲学——将两种语言的精华折叠进同一语法体系，让开发者以更优雅的方式编写高性能脚本。

The www.php.net site

Phel is a functional, Lisp-inspired programming language that compiles to PHP. It brings the expressive power of Clojure and the simplicity of Janet to the PHP ecosystem.

The PHP Interpreter

📚 PHP Standard Library - a modern, consistent, centralized, well-typed, non-blocking set of APIs for PHP programmers

Asynchronous MQTT client for PHP based on workerman.

An asynchronous event driven PHP socket framework. Supports HTTP, Websocket, SSL and other custom protocols.

A non-blocking concurrency framework for PHP applications. 🐘

Open Charge Point Protocol implementation in Go

English PHP documentation

Chinese translation of the PHP documentation

Distributed realtime messaging framework based on workerman.

《Hello 算法》：动画图解、一键运行的数据结构与算法教程，支持 Java, C++, Python, Go, JS, TS, C#, Swift, Rust, Dart, Zig 等语言。

PHP Internals Book