PHP多线程编程指南：使用pthreads扩展创建分布式数据处理系统

<?php
class MyThread extends Thread {
    public function run(){
        echo "Hello, I am a thread
";
    }
}

$thread = new MyThread();
$thread->start();
?>

<?php
class DataProcessor extends Thread {
    private $data;

    public function setData($data){
        $this->data = $data;
    }

    public function run(){
        // 处理数据的逻辑
        foreach($this->data as $item){
            // 处理每一条数据
        }
    }
}

// 分割数据
$rawData = [/* 原始数据 */];
$chunkSize = ceil(count($rawData) / 4);
$dataChunks = array_chunk($rawData, $chunkSize);

// 创建线程池
$threadPool = [];
foreach($dataChunks as $chunk){
    $dataProcessor = new DataProcessor();
    $dataProcessor->setData($chunk);
    $dataProcessor->start();
    $threadPool[] = $dataProcessor;
}

// 等待线程完成
foreach($threadPool as $thread){
    $thread->join();
}

// 合并处理结果
$processingResult = [];
foreach($threadPool as $thread){
    // 合并每个线程的处理结果
    $processingResult = array_merge($processingResult, $thread->getResult());
}

// 输出结果
print_r($processingResult);
?>

<?php
class SharedData extends Threaded {
    public $counter = 0;
}

class MyThread extends Thread {
    private $sharedData;

    public function __construct($sharedData){
        $this->sharedData = $sharedData;
    }

    public function run(){
        // 线程使用共享数据之前先获取锁
        $this->synchronized(function(){
            $this->sharedData->counter++;
        });
    }
}

$sharedData = new SharedData();

$thread1 = new MyThread($sharedData);
$thread2 = new MyThread($sharedData);

$thread1->start();
$thread2->start();

$thread1->join();
$thread2->join();

echo $sharedData->counter; // 输出2
?>