snoopy是一个php类，用来模仿web浏览器的功能，它能完成获取网页内容和发送表单的任务。
官方网站
http://snoopy.sourceforge.net/下面是它的一些特征：
方便抓取网页的内容
方便抓取网页的文字（去掉HTML代码）
方便抓取网页的链接
支持代理主机
支持基本的用户/密码认证模式
支持自定义用户agent,referer,cookies和header内容
支持浏览器转向，并能控制转向深度
能把网页中的链接扩展成高质量的url（默认）
方便提交数据并且获取返回值
支持跟踪HTML框架（v0.92增加）
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
<?php
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
<?php
include "Snoopy.class.php";
$snoopy = new Snoopy;
$snoopy->fetchlinks("
http://www.phpobject.net/blog"); print_r($snoopy->results);
?>
<?php
include("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;
?>