官方网站http://snoopy.sourceforge.net/
下面是它的一些特征:
1、方便抓取网页的内容
2、方便抓取网页的文字(去掉HTML代码)
3、方便抓取网页的链接
4、支持代理主机
5、支持基本的用户/密码认证模式
6、支持自定义用户agent,referer,cookies和header内容
7、支持浏览器转向,并能控制转向深度
8、能把网页中的链接扩展成高质量的url(默认)
9、方便提交数据并且获取返回值
10、支持跟踪HTML框架(v0.92增加)
11、支持再转向的时候传递cookies
下面是简单的例子,比如说我们抓取我的blog的文字
- <?
 - include “Snoopy.class.php”;
 - $snoopy = new Snoopy;
 - $snoopy->fetchtext(“http://www.phpobject.net/blog”);
 - echo $snoopy->results;
 - ?>
 - ^_^,不错把,在比如抓取链接
 - <?
 - include “Snoopy.class.php”;
 - $snoopy = new Snoopy;
 - $snoopy->fetchlinks(“http://www.phpobject.net/blog”);
 - print_r($snoopy->results);
 - ?>
 - --------------------
 - <?phpinclude(“snoopy.class.php”);
 - $snoopy = new Snoopy;
 - // need an proxy?://
 - $snoopy->proxy_host = “my.proxy.host”;
 - $snoopy->proxy_port = “8080”;
 - // set browser and referer:
 - $snoopy->agent = “Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)”;
 - $snoopy->referer = “http://www.jonasjohn.de/”;
 - // set some cookies:
 - $snoopy->cookies[“SessionID”] = ‘238472834723489’;
 - $snoopy->cookies[“favoriteColor”] = “blue”;
 - // set an raw-header:
 - $snoopy->rawheaders[“Pragma”] = “no-cache”;
 - // set some internal variables:
 - $snoopy->maxredirs = 2;
 - $snoopy->offsiteok = false;
 - $snoopy->expandlinks = false;
 - // set username and password (optional)//
 - $snoopy->user = “joe”;
 - snoopy->pass = “bloe”;
 - // fetch the text of the website www.google.com:
 - if($snoopy->fetchtext(“http://www.google.com”))
 - { // other methods: fetch, fetchform, fetchlinks, submittext and submitlinks
 - // response code: print “response code: “.$snoopy->response_code.”<br/>\n”;
 - // print the headers: print “<b>Headers:</b><br/>”;
 - while(list($key,$val) = each($snoopy->headers))
 - {
 - print $key.”: “.$val.”<br/>\n”;
 - }
 - print “<br/>\n”;
 - // print the texts of the website: print “<pre>”.htmlspecialchars($snoopy->results).”</pre>\n”;
 - }
 - else
 - { print “Snoopy: error while fetching document: “.$snoopy->error.”\n”;
 - }
 - ?>
 
--------------------------------
首先,我们要获取到登陆需要发送什么字段,目标地址是什么。这里我们使用snoopy的fetchform来实现。
- <?
 - include “Snoopy.class.php”;
 - $snoopy = new Snoopy;
 - $snoopy->fetchform(“http://www.phpx.com/happy/logging.php?action=login”);
 - print $snoopy->results;
 - ?>
 
当然你也可以直接查看http://www.phpx.com/happy/…的源代码来实现,不过这样更加方便把。这里,我们获取到目标和提交的数据,下一步就可以实现模拟登陆了。代码如下:
- <?
 - include “Snoopy.class.php”;
 - $snoopy = new Snoopy;
 - $submit_url = “http://www.phpx.com/happy/logging.php?action=login”;
 - $submit_vars[“loginmode”] = “normal”;
 - $submit_vars[“styleid”] = “1”;
 - $submit_vars[“cookietime”] = “315360000”;
 - $submit_vars[“loginfield”] = “username”;
 - $submit_vars[“username”] = “********”; //你的用户名
 - $submit_vars[“password”] = “*******”; //你的密码
 - $submit_vars[“questionid”] = “0”;
 - $submit_vars[“answer”] = “”;
 - $submit_vars[“loginsubmit”] = “提   交”;
 - $snoopy->submit($submit_url,$submit_vars);
 - print $snoopy->results;
 - ?>