<?php function DownImageKeep($gurl, $rfurl, $filename, $gcookie="", $JumpCount=0, $maxtime=30) {     $urlinfos = GetHostInfo($gurl);     $ghost = trim($urlinfos['host']);     if($ghost=='')     {         return FALSE;     }     $gquery = $urlinfos['query'];     if($gcookie=="" && !empty($rfurl))     {         $gcookie = RefurlCookie($rfurl);     }     $sessionQuery = "GET $gquery HTTP/1.1\r\n";     $sessionQuery .= "Host: $ghost\r\n";     $sessionQuery .= "Referer: $rfurl\r\n";     $sessionQuery .= "Accept: */*\r\n";     $sessionQuery .= "User-Agent: Mozilla/4.0 (compatible; MSIE 5.00; Windows 98)\r\n";     if($gcookie!="" && !preg_match("/[\r\n]/", $gcookie))     {         $sessionQuery .= $gcookie."\r\n";     }     $sessionQuery .= "Connection: Keep-Alive\r\n\r\n";     $errno = "";     $errstr = "";     $m_fp = fsockopen($ghost, 80, $errno, $errstr,10);     fwrite($m_fp,$sessionQuery);     $lnum = 0;     //获取详细应答头     $m_httphead = Array();     $httpstas = explode(" ",fgets($m_fp,256));     $m_httphead["http-edition"] = trim($httpstas[0]);     $m_httphead["http-state"] = trim($httpstas[1]);     while(!feof($m_fp))     {         $line = trim(fgets($m_fp,256));         if($line == "" || $lnum>100)         {             break;         }         $hkey = "";         $hvalue = "";         $v = 0;         for($i=0; $i<strlen($line); $i++)         {             if($v==1)             {                 $hvalue .= $line[$i];             }             if($line[$i]==":")             {                 $v = 1;             }             if($v==0)             {                 $hkey .= $line[$i];             }         }         $hkey = trim($hkey);         if($hkey!="")         {             $m_httphead[strtolower($hkey)] = trim($hvalue);         }     }     //分析返回记录     if(preg_match("/^3/", $m_httphead["http-state"]))     {         if(isset($m_httphead["location"]) && $JumpCount<3)         {             $JumpCount++;             DownImageKeep($gurl,$rfurl,$filename,$gcookie,$JumpCount);         }         else         {             return FALSE;         }     }     if(!preg_match("/^2/", $m_httphead["http-state"]))     {         return FALSE;     }     if(!isset($m_httphead))     {         return FALSE;     }     $contentLength = $m_httphead['content-length'];     //保存文件     $fp = fopen($filename,"w") or die("写入文件：{$filename} 失败！");     $i=0;     $okdata = "";     $starttime = time();     while(!feof($m_fp))     {         $okdata .= fgetc($m_fp);         $i++;         //超时结束         if(time()-$starttime>$maxtime)         {             break;         }         //到达指定大小结束         if($i >= $contentLength)         {             break;         }     }     if($okdata!="")     {         fwrite($fp,$okdata);     }     fclose($fp);     if($okdata=="")     {         @unlink($filename);         fclose($m_fp);         return FALSE;     }     fclose($m_fp);     return TRUE; } /**  *  获得某页面返回的Cookie信息  *  * @access    public  * @param     string  $gurl  调整地址  * @return    string  */ function RefurlCookie($gurl) {     global $gcookie,$lastRfurl;     $gurl = trim($gurl);     if(!empty($gcookie) && $lastRfurl==$gurl)     {         return $gcookie;     }     else     {         $lastRfurl=$gurl;     }     if(trim($gurl)=='')     {         return '';     }     $urlinfos = GetHostInfo($gurl);     $ghost = $urlinfos['host'];     $gquery = $urlinfos['query'];     $sessionQuery = "GET $gquery HTTP/1.1\r\n";     $sessionQuery .= "Host: $ghost\r\n";     $sessionQuery .= "Accept: */*\r\n";     $sessionQuery .= "User-Agent: Mozilla/4.0 (compatible; MSIE 5.00; Windows 98)\r\n";     $sessionQuery .= "Connection: Close\r\n\r\n";     $errno = "";     $errstr = "";     $m_fp = fsockopen($ghost, 80, $errno, $errstr,10) or die($ghost.'<br />');     fwrite($m_fp,$sessionQuery);     $lnum = 0;     //获取详细应答头     $gcookie = "";     while(!feof($m_fp))     {         $line = trim(fgets($m_fp,256));         if($line == "" || $lnum>100)         {             break;         }         else         {             if(preg_match("/^cookie/i", $line))             {                 $gcookie = $line;                 break;             }         }     }     fclose($m_fp);     return $gcookie; } /**  *  获得网址的host和query部份  *  * @access    public  * @param     string  $gurl  调整地址  * @return    string  */ function GetHostInfo($gurl) {     $gurl = preg_replace("/^http:\/\//i", "", trim($gurl));     $garr['host'] = preg_replace("/\/(.*)$/i", "", $gurl);     $garr['query'] = "/".preg_replace("/^([^\/]*)\//i", "", $gurl);     return $garr; } ?>