改了改之前那个很糙的XXX

将就着用X度去爬吧

 <?php
 echo "***************************************\r\n";
 echo "*   SubDomain Spider                  *\r\n";
 echo "*   Author:Debug0                     *\r\n";
 echo "***************************************\r\n\r\n";
 if($argc<3)
 {
     echo "Usage:php $argv[0] Domain depth\r\n\r\n";
     echo "Example:php $argv[0] qq.com 101\r\n";
     die();
 }
 $domain=$argv[1];
 $page=0;
 $curl=curl_init();
 $output="";
 while($page<=$argv[2])
 {
     $query="/s?wd=site%3A($domain)&pn=".$page;
     $page+=10;  //默认每页10条结果，所以翻页加10
     $url="http://www.baidu.com".$query;
     curl_setopt($curl, CURLOPT_URL, $url);
     curl_setopt($curl,CURLOPT_RETURNTRANSFER,true);
     $output.=curl_exec($curl);
 }
 $regexp="/g\">.*".$domain."\//i";
 $result=array();
 preg_match_all($regexp, $output, $result);
 $result2=$result[0];
 foreach($result2 as $k=>$v)
 {
     $result2[$k]=trim($v,"g\">");
     $pos=strpos($result2[$k],"/");
     $result2[$k]=substr($result2[$k],0,$pos);
 }
 $result2=array_unique($result2);
 foreach ($result2 as $v) {
     echo $v."\r\n";
 }
 $num=count($result2);
 echo "\r\nTotal SubDomains: ".$num;
 ?>