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抓取到的内容在通过正则表达式做一下过滤就得到了你想要的内容,至于如何用正则表达式过滤,在这里就不做介绍了,有兴趣的,以下就是几种常用的用php抓取网页中的内容的方法。
1.file_get_contents
<?php $url = "http://www.jb51.net"; $contents = file_get_contents($url); //如果出现中文乱码使用下面代码 //$getcontent = iconv("gb2312", "utf-8",$contents); echo $contents; ?>
2.curl
<?php $url = "http://www.jb51.net"; $ch = curl_init(); $timeout = 5; curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout); //在需要用户检测的网页里需要增加下面两行 //curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY); //curl_setopt($ch, CURLOPT_USERPWD, US_NAME.":".US_PWD); $contents = curl_exec($ch); curl_close($ch); echo $contents; ?>
3.fopen->fread->fclose
<?php $handle = fopen ("http://www.jb51.net", "rb"); $contents = ""; do { $data = fread($handle, 1024); if (strlen($data) == 0) { break; } $contents .= $data; } while(true); fclose ($handle); echo $contents; ?>
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原文地址:http://www.cnblogs.com/songshujin/p/4905037.html