抽取文章中的图片并保存的PHP代码

     <pre class="brush:php; toolbar: true; auto-links: false;"><?php  /*  author: ssh_kobe  date: 20110602  shortage: 如果网页中的图片路径不是绝对路径，就无法抓取  */  set_time_limit(0);//抓取不受时间限制 $URL='http://www.hzhuti.com/';//任意网址 get_pic($URL); function get_pic($pic_url) {  //获取图片二进制流  $data=CurlGet($pic_url);  /*利用正则表达式得到图片链接*/  $pattern_src = '/<[img|IMG].*?src=['|"](.*?(?:[.gif|.jpg]))['|"].*?[/]?>/';  $num = preg_match_all($pattern_src, $data, $match_src);  $arr_src=$match_src[1];//获得图片数组  get_name($arr_src); echo "<br>finished!!!";  return 0;  } /*得到图片类型，并将其保存到与该文件同一目录*/  function get_name($pic_arr)  {  //图片类型  $pattern_type = '/(/.(jpg|bmp|jpeg|gif|png))/'; foreach($pic_arr as $pic_item){//循环取出每幅图的地址  $num = preg_match_all($pattern_type, $pic_item, $match_type);  $pic_name = get_unique().$match_type[1][0];//改时微秒时间戳命名  //以流的形式保存图片  $write_fd = @fopen($pic_name,"wb");  @fwrite($write_fd, CurlGet($pic_item));  @fclose($write_fd);  echo "[OK]..!";  }  return 0;  } //通过微秒时间获得唯一ID  function get_unique(){  list($msec, $sec) = explode(" ",microtime());  return $sec.intval($msec*1000000);  } //抓取网页内容  function CurlGet($url){  $url=str_replace('&','&',$url);  $curl = curl_init();  curl_setopt($curl, CURLOPT_URL, $url);  curl_setopt($curl, CURLOPT_HEADER, false); //curl_setopt($curl, CURLOPT_REFERER,$url);  curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 6.0; SeaPort/1.2; Windows NT 5.1; SV1; InfoPath.2)");  curl_setopt($curl, CURLOPT_COOKIEJAR, 'cookie.txt');  curl_setopt($curl, CURLOPT_COOKIEFILE, 'cookie.txt');  curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);  curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 0);  $values = curl_exec($curl);  curl_close($curl);  return $values;  }  ?></pre>    <br />