Gurl the picture address to download
$rfurl antecedents. If the target image does a burglar chain setting, you can bypass it.
$filename download picture saved file name, relative path, do not use Realpath
$gcookie to adjust cookie fake cookies
$JumpCount Jump Count
$maxtime maximum number of times
Call Method: Downimagekeep ("Baidu_jgylogo2.gif", "http://baidu.com", "A.gif", "", 0,10);
Copy Code code as follows:
<?php
function Downimagekeep ($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/1.1rn";
$sessionQuery. = "Host: $ghostrn";
$sessionQuery. = "Referer: $RFURLRN";
$sessionQuery. = "Accept: */*rn";
$sessionQuery. = "user-agent:mozilla/4.0 (compatible; MSIE 5.00; Windows) rn ";
if ($gcookie!= "" "&&!preg_match ("/[rn]/", $gcookie))
{
$sessionQuery. = $gcookie. " RN ";
}
$sessionQuery. = "Connection:keep-alivernrn";
$errno = "";
$errstr = "";
$m _fp = Fsockopen ($ghost, $errno, $ERRSTR, 10);
fwrite ($m _fp, $sessionQuery);
$lnum = 0;
//Get detailed answer header
$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);
}
}
//Analysis return records
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 '];
//Save file
$fp = fopen ($filename, "w") or Die ("Write file: {$filename} failed!") ");
$i = 0;
$okdata = "";
$starttime = time ();
while (!feof ($m _fp))
{
$okdata. = fgetc ($m _fp);
$i + +;
//Timeout End
if (Time ()-$starttime > $maxtime)
{
break;
}
//Reach specified size end
if ($i >= $contentLength)
{
break;
}
}
if ($okdata!= "")
{
fwrite ($fp, $okdata);
}
fclose ($FP);
if ($okdata = = "")
{
@unlink ($filename);
fclose ($m _fp);
return FALSE;
}
fclose ($m _fp);
return TRUE;
}
/**
* Get the cookie information returned by a page
*
* @access Public
* @param string $gurl Adjust address
* @return String
*/
function Refurlcookie ($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/1.1rn";
$sessionQuery. = "Host: $ghostrn";
$sessionQuery. = "Accept: */*rn";
$sessionQuery. = "user-agent:mozilla/4.0 (compatible; MSIE 5.00; Windows) rn ";
$sessionQuery. = "Connection:closernrn";
$errno = "";
$errstr = "";
$m _fp = Fsockopen ($ghost, $errno, $errstr, ten) or Die ($ghost. ' <br/> ');
fwrite ($m _fp, $sessionQuery);
$lnum = 0;
//Get detailed answer header
$gcookie = "";
while (!feof ($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;
}
/**
* Access to the host and query part of the URL
*
* @access Public
* @param string $gurl Adjust address
* @return String
*/
function GetHostInfo ($gurl)
{
$gurl = preg_replace ("/^http:///i", "", Trim ($gurl));
$garr [' host '] = Preg_replace ("//(. *) $/i", "", $gurl);
$garr [' query '] = '/'. Preg_replace ("/^ ([^/]*)//i", "", $gurl);
return $garr;
}
?>
