PHPバックエンド機能開発において非同期タスク処理を実装するにはどうすればよいですか?

$pid = pcntl_fork();
if ($pid == -1) {
    // 创建子进程失败
    exit("Error: unable to fork
");
} elseif ($pid == 0) {
    // 子进程中执行任务
    // ... 执行耗时操作
    exit();
} else {
    // 父进程中继续执行其他任务
    // ...
}

// 发送消息到消息队列
$connection = new AMQPConnection($host, $port, $user, $pass, $vhost);
$channel = $connection->channel();
$channel->queue_declare($queueName, false, false, false, false);
$message = new AMQPMessage('task data');
$channel->basic_publish($message, '', $queueName);
$channel->close();
$connection->close();

// 消费消息队列中的任务
$connection = new AMQPConnection($host, $port, $user, $pass, $vhost);
$channel = $connection->channel();
$channel->queue_declare($queueName, false, false, false, false);
$channel->basic_consume($queueName, '', false, false, false, false, function ($message) {
    // 处理任务
    // ... 执行耗时操作
    $message->delivery_info['channel']->basic_ack($message->delivery_info['delivery_tag']);
});
while (count($channel->callbacks)) {
    $channel->wait();
}
$channel->close();
$connection->close();

// 异步任务处理
swoole_async::exec('command', function ($result, $status) {
    // 处理任务结果
    // ...
});

// 协程并发处理
go(function () {
    // 异步任务1
    $result1 = co::exec('command1');

    // 异步任务2
    $result2 = co::exec('command2');

    // 处理任务结果
    // ...
});