PHP的线程库：pthreads

该项目为 PHP 提供基于 POSIX 的多线程编程机制。可异步执行任何与定义的用户自定义方法和函数。内建支持同步和同步方法。

亮点

• 一个易于使用，快速学习的 Threading API for PHP5.3+
• Execute any and all predefined and user declared methods and functions asynchronously
• Ready made synchronization included, geared towards the PHP environment
• Seamless operation in multi-threaded SAPI environments
• A world of possibilities ...

技术特性

• Posix Threads
• Synchronization
• Worker Threads
• Synchronized Methods
• Complete Support for OO - ie. traits, interfaces, inheritance
• Full read/write/execute support for threaded objects
• Mutex ( direct, subset )
• Conditions ( direct, subset )

pthreads was written with simplicity, compatibility and efficiency in mind, it's performance beggars belief !!

环境要求

• PHP5.3+
• ZTS Enabled ( Thread Safety )
• Posix Threads Implementation

Testing has been carried out on x86, x64 and ARM, in general you just need a compiler and pthread.h

PHP 版本支持

pthreads should compile and work in any version of PHP from 5.3.0 to the latest release.

示例代码：

class AsyncOperation extends Thread {
  public function __construct($arg){
    $this->arg = $arg;
  }

  public function run(){
    if($this->arg){
      printf("Hello %s\n", $this->arg);
    }
  }
}
$thread = new AsyncOperation("World");
if($thread->start())
  $thread->join();
?>

项目主页：http://www.open-open.com/lib/view/home/1391824675848