php读取远程网站内容[反盗连]-PHP源码

这是一款利用php fsockopen来读取远程服务器的内容哦，下面这段程序的做法就是可以反盗连呢，好了下面来看看吧。

function DownloadToString()
{
$crlf = "rn";
$respOnse="";
// generate request
$req = 'GET ' . $this->_uri . ' HTTP/1.0' . $crlf
. 'Host: ' . $this->_host . $crlf
. $crlf;

// fetch
$this->_fp = @fsockopen(($this->_protocol == 'https' ? 'ssl://' : '') . $this->_host, $this->_port);
@fwrite($this->_fp, $req);
while(is_resource($this->_fp) && $this->_fp && !feof($this->_fp))
$response .= fread($this->_fp, 1024);
@fclose($this->_fp);

// split header and body
$pos = strpos($response, $crlf . $crlf);
if($pos === false)
return($response);
$header = substr($response, 0, $pos);
$body = substr($response, $pos + 2 * strlen($crlf));

// parse headers
$headers = array();
$lines = explode($crlf, $header);
foreach($lines as $line)
if(($pos = strpos($line, ':')) !== false)
$headers[strtolower(trim(substr($line, 0, $pos)))] = trim(substr($line, $pos+1));

// redirection?
if(isset($headers['location']))
{
$http = new HTTPRequest($headers['location']);
return($http->DownloadToString($http));
}
else
{
return($body);
}
}
}