php 文章采集正则代码

复制代码 代码如下:

  //采集html

  function getwebcontent($url){

  $ch = curl_init();

  $timeout = 10;

  curl_setopt($ch, CURLOPT_URL, $url);

  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

  curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);

  curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, 1);

  $contents = trim(curl_exec($ch));

  curl_close($ch);

  return $contents;

  }

  //获得标题和url

  $string =

  getwebcontent('http://www.***.com/learn/zhunbeihuaiyun/jijibeiyun/2');

  //正则匹配<li>获取标题和地址

  preg_match_all ("/<li><a href=\"\/learn\/article\/(.*)\">(.*)<\/a>/",$string, $out, PREG_SET_ORDER);

  foreach($out as $key => $value){

  $article['title'][] = $out[$key][2];

  $article['link'][] = "http://www.***.com/learn/article/".$out[$key][1];

  }

  //根据url获取文章内容

  foreach($article['link'] as $key=>$value){

  $content_html = getwebcontent($article['link'][$key]);

  preg_match("/<div id=pagenum_0(.*)>[\s|\S]*?<\/div>/",$content_html,$matches);

  $article[content][$key] = $matches[0];

  }

  //不转码还真不能保存成文件

  foreach($article[title] as $key=>$value){

  $article[title][$key] = iconv('utf-8', 'gbk', $value);//转码

  }

  //存入文件

  $num = count($article['title']);

  for($i=0; $i<$num; $i++){

  file_put_contents("{$article[title][$i]}.txt", $article['content'][$i]);

  }

  ?>