php下載取得遠端圖片函數(可偽造來路)-php教程-PHP中文網

php下載取得遠端圖片函數(可偽造來路)

WBOY

發布： 2016-07-25 08:54:27

原創

975 人瀏覽過

//下載取得遠端圖片
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/1.1rn";
$sessionQuery .= "主機: $ghostrn";
$sessionQuery .= "引用者: $rfurlrn";
$sessionQuery .= "接受: */*rn";
$sessionQuery .= "用戶代理: Mozilla/4.0 (相容; MSIE 5.00 ; Windows 98)rn";
if($gcookie!="" && !preg_match("/[rn]/", $gcookie))
{
$sessionQuery .= $gcookie."rn ";
}
$sessionQuery .= "連線：Keep-Alivenrn";
$errno = "";
$errstr = "";
$m_fp = fsock($ghost,open 80, $errno, $errstr,10);
fwrite($m_fp,$sessionQuery);
$lnum = 0;
//取得詳細回應頭
$m_httphead = Array ();
$httpsstas =explode(" ",fgets($m_fp,256));
$m_httphead["http-edition"] = trim($httpsstas[0]);
$m_httphead ["http-state"] = trim($httpsstas[1]);
while(!feof($m_fp))
{
$line = trim(fgets($m_fp,256));
if($line == "" || $lnum>100)
{
中斷;
}
$hkey = "";
$hvalue = "";
$v = 0;
for($i=0; $i {
if($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);
}
}
// 分析回傳記錄
if(preg_match("/^3/", $m_httphead["http-state"]))
{
if(isset($m_httphead["location"]) && $JumpCount {
$JumpCount ;
DownImageKeep($gurl,$rfurl,$filename,$gcookie,$JumpCount);
}
else
{
返回FALSE ;
}
}
if(!preg_match("/^2/", $m_httphead["http-state"]))
{
return FALSE;
}
if(!isset($m_httphead))
{
return FALSE;
}
$contentLength = $m_httphead['content-length'];
//保存🎜> //保存檔案
$fp = fopen($filename,"w") or die("寫入檔案：{$filename} 失敗！");
$i=0;
$okdata = "";
$starttime = time();
while(!feof($m_fp))
{
$ okdata .= fgetc($m_fp);
$i ;
// 超時結束
if(time()-$starttime>$maxtime)
{
break; 🎜 > }
//到達指定大小結束
if($i >= $contentLength)
{
break;
}
}
if( $okdata !="")
{
fwrite($fp,$okdata)
}
fclose($fp)
if($okdata=="")
{
{
@unlink($filename);
fclose($m_fp);
回傳FALSE;
fclose($m_fp)
回傳TRUE;
/**
回傳TRUE; function RefurlCookie($gurl)
{
全域$gcookie,$lastRfurl;
$gurl = trim($gurl)
if(!empty($gcookie) & $lastRfookie) & $lastRfurl =$gurl)
{
return $gcookie;
}
else
{
$lastRfurl=$gurl;
}
if(trim($gurl) =='')
{
return '';
}
$urlinfos = GetHostInfo($gurl);
$ghost = $urlinfos['host'];
$ gquery = $urlinfos['query'];
$sessionQuery = "GET $gquery HTTP/1.1rn";
$sessionQuery .= "主機: $ghostrn";
$sessionQuery .= "接受: */*rn";
$sessionQuery .= "用戶代理: Mozilla/4.0 (兼容; MSIE 5.00; Windows 98)rn";
$sessionQuery .= "連接: Closernrn";
$errno = "";
$errstr = "";
$m_fp = fsockopen($ghost, 80, $errno, $errstr,10) 或die($ghost.'
');
fwrite($m_fp,$sessionQuery);
$lnum = 0;
//取得詳細的應答頭
$gcookie = "";
while(!feof($m_fp ))
{
$line = trim(fgets($m_fp,256));
if($line == "" || $lnum>100)
{
中斷;
}
else
{
if(preg_match("/^cookie/i", $line))
{
$gcookie = $line;
休息；
}
}
}
fclose($m_fp);
回傳$gcookie;
}
/**
* 取得某頁回傳的Cookie資訊
*
* @access public
* @param string $gurl 調整位址
* @return string
*/
($gurl)
{
$gurl = preg_replace("/^http:///i", "", 修剪($gurl));
$garr['host'] = preg_replace( "//(.*)$/i", "", $gurl);
$garr['query'] = "/".preg_replace("/^([^/]*)//i" , "", $gurl);
回傳$garr;
}
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