如何处理PHP开发中的并发请求和任务处理

<?php
class MyThread extends Thread {
    private $url;

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

    public function run() {
        // 处理请求任务
        $response = file_get_contents($this->url);
        echo "Response: " . $response . PHP_EOL;
    }
}

$urls = [
    "http://example.com",
    "http://example.net",
    "http://example.org"
];

$threads = [];
foreach ($urls as $url) {
    $thread = new MyThread($url);
    $thread->start();
    $threads[] = $thread;
}

// 等待所有线程执行完成
foreach ($threads as $thread) {
    $thread->join();
}
?>

<?php
$urls = [
    "http://example.com",
    "http://example.net",
    "http://example.org"
];

$curls = [];
foreach ($urls as $url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_multi_add_handle($multi_handle, $ch);
    $curls[] = $ch;
}

$running = null;
do {
    curl_multi_exec($multi_handle, $running);
} while ($running > 0);

foreach ($curls as $ch) {
    $response = curl_multi_getcontent($ch);
    echo "Response: " . $response . PHP_EOL;
    curl_multi_remove_handle($multi_handle, $ch);
    curl_close($ch);
}

curl_multi_close($multi_handle);
?>

<?php
// 创建连接和通道
$connection = new AMQPStreamConnection('localhost', 5672, 'guest', 'guest');
$channel = $connection->channel();

// 声明队列
$channel->queue_declare('task_queue', false, true, false, false);

$tasks = [
    "Task 1",
    "Task 2",
    "Task 3"
];

foreach ($tasks as $task) {
    // 发送消息到队列
    $msg = new AMQPMessage($task, ['delivery_mode' => 2]);
    $channel->basic_publish($msg, '', 'task_queue');
    echo "Sent task: " . $task . PHP_EOL;
}

$channel->close();
$connection->close();
?>