nginx - php pthreads apache cannot load 问题(windows)

<?php
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();
?>

<?php
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();
?>

<?php
header('Content-Type: text/html; charset=utf-8');
ob_start();
function do_flush() {
    echo '<br />'.str_repeat(' ', 1024*4);
    ob_flush();
    flush();
}
class Request extends Thread {
    public $url;
    public $data;
    public function __construct($url) {
        $this->url = $url;
    }
    public function run() {
        // 线程处理一个耗时5秒的任务
        for($i=0;$i<5;$i++) {
            //不要在线程里使用echo输出内容
            //echo '线程: '.date('H:i:s')."\n";
            //do_flush();
            //sleep(1);
        }
        $response = file_get_contents($this->url);
        $response = $this->url;
        if ($response) {
            $this->data = array($response);
        }
        //echo "线程: 任务完成<br />";
    }
}
$request = new Request('hello.html');
// 运行线程:start()方法会触发run()运行
if ($request->start()) {
    // 主进程处理一个耗时10秒的任务,此时线程已经工作
    for($i=0;$i<10;$i++) {
        echo '进程: '.date('H:i:s')."\n";
        do_flush();
        sleep(1);
    }
}

// 同步线程并输出线程返回的数据
$request->join();
echo '线程返回数据: '.$request->data[0];
ob_end_flush();