使用Swoole开发高性能的Web爬虫

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<?php

use SwooleCoroutine;

use SwooleCoroutineHttpClient;

class Spider

{

    private $concurrency = 5;   // 并发数量

    private $urls = [

        'https://www.example.com/page1',

        'https://www.example.com/page2',

        'https://www.example.com/page3',

        // 添加更多的URL

    ];

    public function start()

    {

        Coroutineun(function() {

            $pool = new SplQueue();  // 使用队列来管理并发请求

            foreach ($this->urls as $url) {

                $pool->push($url);

            }

            for ($i = 0; $i < $this->concurrency; $i++) {

                Coroutine::create([$this, 'request'], $pool);

            }

        });

    }

    public function request(SplQueue $pool)

    {

        while (!$pool->isEmpty()) {

            $url = $pool->shift();

            $cli = new Client();

            $cli->get($url);

            $response = $cli->body;

            // 处理响应数据，如解析HTML、提取内容等

            // ...

            $cli->close();

        }

    }

}

$spider = new Spider();

$spider->start();

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php spider.php