$snoopy = new Snoopy; 
$snoopy->proxy_host = "www.baidu.com";  
$snoopy->proxy_port = "8080";  

$snoopy->agent = "(compatible; MSIE 4.01; MSN 2.5; AOL 4.0; Windows 98)";  
$snoopy->referer = "http://www.baidu.com/";  

$snoopy->cookies["SessionID"] = 238472834723489l;  
$snoopy->cookies["favoriteColor"] = "RED";  

$snoopy->rawheaders["Pragma"] = "no-cache";  

$snoopy->maxredirs = 2;  
$snoopy->offsiteok = false;  
$snoopy->expandlinks = false;  

$snoopy->user = "joe";  
$snoopy->pass = "bloe";  

if($snoopy->fetchtext("http://www.baidu.com"))  
{  
  echo "<PRE>".htmlspecialchars($snoopy->results)."</PRE> ";<BR>  
}<BR>  
else<BR>  
  echo "error fetching document: ".$snoopy->error." ";

snoopy采集phpchina示例
<?php 
//采集phpchina 
set_time_limit(0); 
require_once("Snoopy.class.php"); 
$snoopy=new Snoopy(); 
//登陆论坛 
$submit_url = "http://www.phpchina.com/bbs/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,$submit_vars); 
if ($snoopy->results) 
{ 
  //获取连接地址 
  $snoopy->fetchlinks("http://www.phpchina.com/bbs"); 
  $url=array(); 
  $url=$snoopy->results; 
  //print_r($url); 
  foreach ($url as $key=>$value) 
  { 
  //匹配http://www.phpchina.com/bbs/forumdisplay.php?fid=156&sid=VfcqTR地址即论坛板块地址 
  if (!preg_match("/^(http://www.phpchina.com/bbs/forumdisplay.php?fid=)[0-9]*&sid=[a-zA-Z]{6}/i",$value)) 
  { 
  unset($url[$key]); 
  } 
  } 
  //print_r($url); 
  //获取到板块数组$url，循环访问，此处获取第一个模块第一页的数据 
  $i=0; 
  foreach ($url as $key=>$value) 
  { 
  if ($i>=1) 
  { 
  //测试限制 
  break; 
  } 
  else 
  { 
  //访问该模块，提取帖子的连接地址，正式访问里需要提取帖子分页的数据，然后根据分页数据提取帖子数据 
  $snoopy=new Snoopy(); 
  $snoopy->fetchlinks($value); 
  $tie=array(); 
  $tie[$i]=$snoopy->results; 
  //print_r($tie); 
  //转换数组 
  foreach ($tie[$i] as $key=>$value) 
  { 
  //匹配http://www.phpchina.com/bbs/viewthread.php?tid=68127&amp;extra=page%3D1&amp;page=1&sid=iBLZfK 
  if (!preg_match("/^(http://www.phpchina.com/bbs/viewthread.php?tid=)[0-9]*&amp;extra=page%3D1&amp;page=[0-9]*&sid=[a-zA-Z]{6}/i",$value)) 
  { 
  unset($tie[$i][$key]); 
  } 
  } 
  //print_r($tie[$i]); 
  //归类数组，将同一个帖子不同页面的内容放一个数组里 
  $left='';//连接左边公用地址 
  $j=0; 
  $page=array(); 
  foreach ($tie[$i] as $key=>$value) 
  { 
  $left=substr($value,0,52); 
  $m=0; 
  foreach ($tie[$i] as $pkey=>$pvalue) 
  { 
  //重组数组 
  if (substr($pvalue,0,52)==$left) 
  { 
  $page[$j][$m]=$pvalue; 
  $m++; 
  } 
  } 
  $j++; 
  } 
  //去除重复项开始 
  //$page=array_unique($page);只能用于一维数组 
  $paget[0]=$page[0]; 
  $nums=count($page); 
  for ($n=1;$n<$nums;$n++) 
  { 
  $paget[$n]=array_diff($page[$n],$page[$n-1]); 
  } 
  //去除多维数组重复值结束 
  //去除数组空值 
  unset($page); 
  $page=array();//重新定义page数组 
  $page=array_filter($paget); 
  //print_r($page); 
  $u=0; 
  $title=array(); 
  $content=array(); 
  $temp=''; 
  $tt=array(); 
  foreach ($page as $key=>$value) 
  { 
  //外围循环，针对一个帖子 
  if (is_array($value)) 
  { 
  foreach ($value as $k1=>$v1) 
  { 
  //页内循环，针对一个帖子的N页 
  $snoopy=new Snoopy(); 
  $snoopy->fetch($v1); 
  $temp=$snoopy->results; 
  //读取标题 
  if (!preg_match_all("/<h2>(.*)</h2>/i",$temp,$tt)) 
  { 
  echo "no title"; 
  exit; 
  } 
  else 
  { 
  $title[$u]=$tt[1][1]; 
  } 
  unset($tt); 
  //读取内容 
  if (!preg_match_all("/<div id="postmessage_[0-9]{1,8}" class="t_msgfont">(.*)</div>/i",$temp,$tt)) 
  { 
  print_r($tt); 
  echo "no content1"; 
  exit; 
  } 
  else 
  { 
  foreach ($tt[1] as $c=>$c2) 
  { 
  $content[$u].=$c2; 
  } 
  } 
  } 
  } 
  else 
  { 
  //直接取页内容 
  $snoopy=new Snoopy(); 
  $snoopy->fetch($value); 
  $temp=$snoopy->results; 
  //读取标题 
  if (!preg_match_all("/<h2>(.*)</h2>/i",$temp,$tt)) 
  { 
  echo "no title"; 
  exit; 
  } 
  else 
  { 
  $title[$u]=$tt[1][1]; 
  } 
  unset($tt); 
  //读取内容 
  if (!preg_match_all("/<div id="postmessage_[0-9]*" class="t_msgfont">(.*)</div>/i",$temp,$tt)) 
  { 
  echo "no content2"; 
  exit; 
  } 
  else 
  { 
  foreach ($tt[1] as $c=>$c2) 
  { 
  $content[$u].=$c2; 
  } 
  } 
  } 
  $u++; 
  } 
  print_r($content); 
  } 
  $i++; 
  } 
} 
else 
{ 
  echo "login failed"; 
  exit; 
} 
?>