PHP伪造来路信息实例方法

function getUrl($address, $myip)
{   
   ob_start();   
   $mtime =
explode(' ',
microtime());   
   $starttime =
$mtime[1] +
$mtime[0];   
  
   $onoff =
(function_exists('ini_get')) ? ini_get('register_globals') :
get_cfg_var('register_globals');   
  
   if($onoff !=
1) {   
       @extract($_POST,
EXTR_SKIP);   
       @extract($_GET,
EXTR_SKIP);   
   }   
  
   $self =
$_SERVER['PHP_SELF'];   
   $myaddress =
'http://'.$_SERVER['HTTP_HOST'].$self;   
  
   $comm =
'';   
  
   if(isset($url) && $url)
{   
       $url = str_replace($address, '',
$url);   
   }   
     
   $pcomm =
'';   
   foreach($_POST as $key => $val)
{   
       if($pcomm == '')
{   
           $pcomm .=
$key.''.urlencode($val);   
       } else
{   
           $pcomm .=
$pcomm.'&'.$key.'='.urlencode($val);   
       }   
   }   
  
   foreach($_GET as $key => $val)
{   
       if($key != 'url')
{   
           if($comm == '')
{   
               $comm =
$key.'='.rawurlencode($val);