PHP破解163相册外连

<?php
ob_start();
$img=$_GET['url'];

$host=$path=str_replace('http://','',$img);
$host=explode('/',$host);
$host=$host[0];
$path=strstr($path,'/');
$fp = fsockopen($host, 80, $errno, $errstr, 30);
if ($fp)
{
@fputs($fp, "GET $path HTTP/1.1\r\n");
@fputs($fp, "Host: $host\r\n");
@fputs($fp, "Accept: */*\r\n");
@fputs($fp, "Referer: ");
@fputs($fp, "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)\r\n");
@fputs($fp, "Connection: Close\r\n\r\n");
}

$Content = '';
while ($str = fread($fp, 4096))
$Content .= $str;
@fclose($fp);
$pos=strpos($Content,"\r\n\r\n");
$head=substr($Content,0,$pos);
$text=substr($Content,$pos+4);
header("Content-Type: image/jpeg");
echo $text;
?>