爬虫_电影ftp下载地址

站点：http://www.dy2018.com/

数据库：mysql 账号:root 密码:123456

建表语句：CREATE TABLE dy2008_url (id int(9) NOT NULL AUTO_INCREMENT, url varchar(2000) NOT NULL, status tinyint(2) NOT NULL, PRIMARY KEY(id));

代码：

<?php
	declare(ticks = 1);
	pcntl_signal(SIGQUIT, 'signal_handler');
	pcntl_signal(SIGTERM, 'signal_handler');

	$crawlers_pid = array();
	$finish_count = 0;

	//信号处理函数
	function signal_handler($signal)
	{
	    global $crawlers_pid;
	    if ($signal == SIGQUIT || $signal == SIGTERM)
	    {
	        foreach ($crawlers_pid as $pid) {
	            posix_kill($pid,SIGTERM);
	        }
	        echo "---------- crawl task exit ----------";
	        global $con;//mysql
	        exit();
	    }
	}

	//GET方式获取链接对应页面内容
	function get_page_content($url)
	{
		$content = file_get_contents($url);
		return $content;
	}

	//POST方式获取链接对应页面内容
	function get_page_content_by_post($url, $arr)
	{
		$arr = http_build_query($arr);
		$opts = array (
			'http' => array('method' => 'POST', 'header' => 'Content-type:application/x-www-form-urlencoded'.' Content-Length:'.strlen($data).'"', 'content' => $data)
		);
		$context = stream_context_create($opts);
		$content = file_get_contents($url,false,$context);
		return $content;
	}

	//dy2018抓取主流程
	function run_dy2018()
	{
		global $crawlers_pid;
		global $finish_count;
		$crawl_urls = array("http://www.dy2018.com/html/tv/hytv/",
		"http://www.dy2018.com/html/tv/hepai/",
		"http://www.dy2018.com/html/tv/gangtai/",
		"http://www.dy2018.com/html/tv/oumeitv/",
		"http://www.dy2018.com/html/tv/rihantv/",
		"http://www.dy2018.com/html/tv/tvzz/",
		"http://www.dy2018.com/0/",
		"http://www.dy2018.com/1/",
		"http://www.dy2018.com/2/",
		"http://www.dy2018.com/3/",
		"http://www.dy2018.com/4/",
		"http://www.dy2018.com/5/",
		"http://www.dy2018.com/6/",
		"http://www.dy2018.com/7/",
		"http://www.dy2018.com/8/",
		"http://www.dy2018.com/9/",
		"http://www.dy2018.com/10/",
		"http://www.dy2018.com/11/",
		"http://www.dy2018.com/12/",
		"http://www.dy2018.com/13/",
		"http://www.dy2018.com/14/",
		"http://www.dy2018.com/15/",
		"http://www.dy2018.com/16/",
		"http://www.dy2018.com/17/",
		"http://www.dy2018.com/18/",
		"http://www.dy2018.com/19/",
		"http://www.dy2018.com/20/");

		$i = 0;
		while($i < count($crawl_urls))
		{
			$pid = pcntl_fork();
			if($pid == -1) {
				echo "system error. check it now!";
				exit();
			} else if($pid > 0){
				$crawlers_pid[$i] = $pid;
			} else {
				$url = $crawl_urls[$i];
				$con = mysql_connect("localhost", "root", "123456");
				if(!$con) {
					die('Count not connect: '.mysql_error());
				}
				mysql_select_db("mysql", $con);
				crawl_process($url);
				$finish_count++;
			}
			$i++;
		}

		//pcntl_waitpid可能会导致信号监听失败
		while (true) {
			if($finish_count == count($crawlers_pid)) {
				echo "---------- crawl task finish ----------";
				mysql_close();
				exit();
			}
            sleep(1);
        }

	}

	//从入口链接到其下所有下载页链接抓取过程
	function crawl_process($url)
	{
		echo "start handle url:".$url;
		$page_idx = 1;
		$valid_tag = true;
		$info_url_pattern = '/\/i\/\d+.html/';
		$ftp_url_pattern = '/ftp:\/\/.*?.(swf|avi|flv|mpg|rm|mov|wav|asf|3gp|mkv|rmvb)/i';//^$两个符号不起作用
		while($valid_tag) {
			$page_url = get_page_index_url($url, $page_idx);
			printf("start crawl url:".$page_url."\n");
			$page_content = get_page_content($page_url);
			$valid_tag = is_valid_page($page_content);
			if($valid_tag) {
				$matches_urls = array();
				preg_match_all($info_url_pattern, $page_content, $matches_urls);
				$page_content = mb_convert_encoding($page_content, "UTF-8", "GBK");
				for($i=0; $i<count($matches_urls[0]); $i++) {
					$detail_url = 'http://www.dy2018.com'.$matches_urls[0][$i];
					$detail_page_content = get_page_content($detail_url);
					$detail_page_content = mb_convert_encoding($detail_page_content, "UTF-8", "GBK");
					preg_match_all($ftp_url_pattern, $detail_page_content, $ftp_urls);
					$ftp_links = array();
					for($j=0;$j<count($ftp_urls[0]); $j++) {

						$ftp_links[$j] = $ftp_urls[0][$j];
					}
					$ftp_links_unique = array_values(array_unique($ftp_links));

					foreach ($ftp_links_unique as $ftp_link) {
						mysql_query("insert into dy2018_url (url, status) values('$ftp_link','0')");
						// echo mysql_error();//打印mysql错误
					}
					sleep(1);
				}
			}
			$page_idx++;
		}
	}

	//获取页码对应的url链接
	function get_page_index_url($url, $idx)
	{
		$idx_url = $url;
		if($idx == 1) {
			$idx_url = $idx_url.'index.html';
		} else if($idx > 1){
			$idx_url = $idx_url.'index_'.$idx.'.html';
		}
		return $idx_url;
	}

	//根据页面内容判断链接是否有效
	function is_valid_page($content)
	{
		return $content?true:false;
	}
	run_dy2018();
	mysql_close();
?>

结果：