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fetch.php
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<?php
require('mail.php');
$fetch = new fetch();
$content = $fetch->fetch('http://www.ftchinese.com');
class fetch {
private $waithtofetch;
private $fetchnav = '/home/sogo/code/www/ftnav';
private $ftcontent = '/home/sogo/code/www/ft-';
private $bodyrule = '';
//没有分页的规则
private $bodyruleno = '/<div class="content" id="bodytext">[\t\s*\n]*<div>(.*)[\t\s*\n]*<div class="story_list">/isU';
//有分页时规则
private $bodyrulepage = '/<div class="content" id="bodytext">[\t\s*\n]*<div>(.*)[\t\s*\n]*<div class=clearFloat>/isU';
private $domain = 'http://www.ftchinese.com';
private $filetype = '.txt';
private $havefetch = '/home/sogo/code/www/havefetch.log';
private $proxy_num = 1;
public function __construct() {
$this->ftcontent .= date('Ymd');
if(file_exists($this->ftcontent)) {
unlink($this->ftcontent);
}
$this->waittofetch = 5;
}
/**
* 抓取入口
*
* @param mixed $url
* @access public
* @return void
*/
public function fetch($url) {
$nav = $this->fetch_nav_content($url);
//按导航抓取
foreach ($nav as $key => $val) {
$eachlink = $this->fetch_each_link_content($val['link'],$val['name']);
if(file_exists($this->havefetch)) {
$havefetch = file_get_contents($this->havefetch,true);
} else {
$havefetch = '';
}
$success = false;
//按每页内容抓取
if($eachlink) {
foreach ($eachlink as $k => $v) {
$body = $this->fetch_content($v['link']);
if(preg_match('/'.$v['article_id'].'/',$havefetch)){
print_r('已经抓取'.$v['article_id']."\n");
continue;
}
if($body) {
print_r('开始抓取'.$v['article_id']."\n");
file_put_contents($this->havefetch,print_r($v['article_id'].",\n",true),FILE_APPEND);
file_put_contents($this->ftcontent.$val['name'].$this->filetype,print_r($v['name'],true)."\n",FILE_APPEND);
file_put_contents($this->ftcontent.$val['name'].$this->filetype,print_r($v['link'],true)."\n\n",FILE_APPEND);
file_put_contents($this->ftcontent.$val['name'].$this->filetype,print_r($body,true)."\n\n",FILE_APPEND);
$success = true;
}
}
}
//如果抓取的为老数据，或者失败，删掉该类文件
$filename = $this->ftcontent.$val['name'].$this->filetype;
if(!$success) {
if(file_exists($filename)) {
unlink($filename);
}
} else {
SendMail::get_instance()->send($filename);
}
}
}
public function fetch_content($url) {
$content = $this->get_file_content_pass_wall($url);
preg_match_all('/<a class=storytime href="(.*)">(.*)<\/a>/',$content,$publishtime);
preg_match_all('/([0-9]+)年([0-9]+)月([0-9]+)日/',$publishtime[2][0],$time);
$publishtime = mktime('0','0','0',$time[2][0],$time[3][0],$time[1][0]);
$wish = mktime('0','0','0',date('m')-1,date('d'),date('Y'));
if($wish > $publishtime) {
return '';
}
preg_match_all('/<div class="pagination">(.*)<\/div>/isU',$content,$pages);
$this->bodyrule = $this->bodyruleno;
if($pages && count($pages[1]) > 0) {
$this->bodyrule = $this->bodyrulepage;
$body = $this->get_body_content($content);
preg_match_all('/<a href="(.*)?">(.*)?<\/a>/U',$pages[1][0],$pageurls);
$pageurls = array_unique($pageurls[1]);
$body .= $this->fetch_page_content($pageurls);
} else {
$body = $this->get_body_content($content);
}
return $body;
}
/**
*获取分页content内容
*@params array $urls
*@return string
* */
public function fetch_page_content($urls) {
$result = '';
foreach ($urls as $key => $val) {
if(!preg_match('/http:/',$val)) {
$val = $this->domain.$val;
}
$content = $this->get_file_content_pass_wall($val);
$body = $this->get_body_content($content);
$result .= $body;
}
return $result;
}
/**
*获取需要的内容部分
*@param string $content
* */
public function get_body_content($content) {
$result = '';
if(empty($content)) {
return $result;
}
preg_match_all($this->bodyrule,$content,$body);
if(isset($body[1][0])) {
$body = preg_replace('/<p>/'," ",$body[1][0]);
$body = preg_replace("/\n\n/","\n",$body);
$body = strip_tags($body);
$result = $body;
}
return $result;
}
public function fetch_each_link_content($url,$channel) {
$content = $this->get_file_content_pass_wall($url);
preg_match_all('/<h3><a target="(.*)" href="(.*)?">(.*)?<\/a>/',$content,$match);
$savefile = $this->ftcontent.$channel.$this->filetype;
if(file_exists($savefile)) {
unlink($savefile);
}
foreach ($match[3] as $key => $val) {
if($val) {
$nav[$key]['name'] = $val;
file_put_contents($savefile,print_r($val,true)."\n",FILE_APPEND);
if(preg_match('/http:/',$match[2][$key])) {
$nav[$key]['link'] = $match[2][$key];
} else {
$nav[$key]['link'] = $this->domain.$match[2][$key];
}
preg_match_all('/[0-9]+/',$match[2][$key],$id);
$nav[$key]['article_id'] = $id[0][0];
}
}
return $nav;
}
/**
*获取导航url
* */
public function fetch_nav_content($url) {
if(file_exists($this->fetchnav)) {
$nav = file_get_contents($this->fetchnav,true);
$nav = json_decode($nav,true);
if(count($nav) > 0) {
return $nav;
}
}
$content = $this->get_file_content_pass_wall($url);
preg_match_all('/<div id="navigation" class="pagediv">(.*)<\/div>/isU',$content,$navcontent);
preg_match_all('/<li(.*)><a href="(.*)">(.*)<\/a><\/li>/',$navcontent[1][0],$match);
foreach ($match[2] as $key => $val) {
if(!preg_match('/http:/',$val)){
$val = $this->domain.$val;
}
if(!preg_match('/channel/',$val) || preg_match('/rss|slides|video/',$val)) {
continue;
}
$nav[$key]['link'] = $val;
$nav[$key]['name'] = $match[3][$key];
}
if(file_exists($this->fetchnav)){
unlink($this->fetchnav);
}
file_put_contents($this->fetchnav,print_r(json_encode($nav),true),FILE_APPEND);
return $nav;
}
/**
* 对获取网页file_get_content包装
* @return text
* **/
public function get_file_content($url) {
$proxy = $this->get_proxy_list();
$ctx = stream_context_create(array(
'http' => array(
'timeout' => 10,
'proxy' => $proxy,
'request_fulluri' => True
)
));
$result = @file_get_contents($url,false,$ctx);
if($result) {
//设置抓取内容时间间隔
sleep($this->waittofetch);
}else{
$this->proxy_num++;
if($this->proxy_num > 3) {
$this->proxy_num = 0;
return '';
}
$this->get_file_content($url);
}
return $result;
}
public function get_file_content_pass_wall($url) {
$ctx = stream_context_create(array(
'http' => array(
'timeout' => 10,
'proxy' => 'tcp://127.0.0.1:8087',
'request_fulluri' => True
)
));
$result = @file_get_contents($url,false,$ctx);
if($result) {
sleep($this->waittofetch);//设置抓取内容时间间隔
}
return $result;
}
/**
* 代理
* return 'tcp://192.168.1.128:3128';
*/
private function get_proxy_list() {
$proxy = array(
0 => '180.96.19.25:8080',1 => '221.180.22.239:3128', 2 => '116.236.205.100:80', 3 => '60.209.7.54:8080', 4 => '60.210.169.246:8888', 5 => '124.244.242.72:3128'
);
$i = rand(0,5);
return 'tcp://'.$proxy[$i];
}
}