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Package phpthread
Short Description Polyfill Implementation of Threads in PHP. This class supports both FORK process and native Threads using ZTS compilation.
License MIT
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Informations about the package phpthread
ByJG PHPThread: Simplified Threads and Non-Blocking Code in PHP
ByJG PHPThread simplifies working with threads and non-blocking code in PHP, bridging the gap for a language that was not inherently designed for threading.
Table of Contents
- Overview
- Why Threads in PHP?
- How It Works
- Default PHP (Non-ZTS)
- PHP ZTS (Zend Thread Safety)
- Features
- Limitations
- Installation
Overview
PHPThread is a polyfill library that abstracts threading functionality for PHP, providing a consistent interface regardless of the underlying PHP setup (ZTS or Fork). It empowers developers to implement thread-like behavior and asynchronous processing in PHP applications.
Why Threads in PHP?
PHP is traditionally designed for a request-response cycle, where scripts are executed only in response to client requests and terminate after sending a response. While efficient for web applications, this architecture lacks native threading support for background or concurrent tasks.
With PHPThread, you can overcome these limitations by leveraging:
- Forking (Default PHP) for simulating threading.
- Zend Thread Safety (ZTS) for true multi-threading environments.
How It Works
Default PHP (Non-ZTS)
In standard PHP installations (without ZTS), threading is simulated using the fork command.
This approach creates a new process by cloning the parent process. While not a true thread,
this method can approximate threading behavior.
Requirements:
PHP ZTS (Zend Thread Safety)
With ZTS-enabled PHP, true multi-threading becomes possible. This setup is ideal for production environments where
robust threading is required. The ZTS version is compiled with the --enable-zts flag, but it may not be included in
all PHP distributions.
Requirements:
Features
- Thread Management: Simplified thread creation and execution (docs).
- Thread Pools: Efficiently manage and reuse threads for multiple tasks (docs).
- Promises (Experimental): Asynchronous task management with a promise-like API (docs).
Supported Promise Methods:
then(): Execute a callback on promise resolution.catch(): Execute a callback on promise rejection.finally(): Execute a callback after resolution or rejection.Promise::resolve(): Resolve a promise.Promise::reject(): Reject a promise.Promise::all(): Wait for all promises to resolve.Promise::race(): Wait for the first promise to resolve.
Limitations
Read the full list of limitations.
Installation
Requirements
Non-ZTS (Default PHP)
- PHP ≥8.1
pcntlextensionshmopextension
ZTS (Zend Thread Safety)
- PHP ≥8.1 compiled with
--enable-zts parallelextensionshmopextension (for Promises support)
Install via Composer
Dependencies
All versions of phpthread with dependencies
ext-pcntl Version *
ext-posix Version *
php Version >=8.1 <8.4