多线程扩展入门

要从多线程开始，你需要用于 php 的 pthreads-ext，它可以安装

$ pecl install pthreads

并将条目添加到 php.ini。

一个简单的例子：

<?php
// NOTE: Code uses PHP7 semantics.
class MyThread extends Thread {
    /**
     * @var string
     * Variable to contain the message to be displayed.
     */
    private $message;
    
    public function __construct(string $message) {
        // Set the message value for this particular instance.
        $this->message = $message;
    }

    // The operations performed in this function is executed in the other thread.
    public function run() {
        echo $this->message;
    }
}

// Instantiate MyThread
$myThread = new MyThread("Hello from an another thread!");
// Start the thread. Also it is always a good practice to join the thread explicitly.
// Thread::start() is used to initiate the thread,
$myThread->start();
// and Thread::join() causes the context to wait for the thread to finish executing
$myThread->join();