Verwenden Sie PHP, um Proxys zu erkennen

能够检测大部分通过代理服务器访问的ip. 
//beiji.com   2000.6.17  
$ip = getenv("REMOTE_ADDR");  
$v = getenv("HTTP_VIA");  
$f = getenv("HTTP_X_FORWARDED_FOR");  
$c = getenv("HTTP_XROXY_CONNECTION");  
$o = getenv("HTTP_PRAGMA");  

print '
REMOTE_ADDR';  
$ip drucken;  

if (($v=="")&&($f=="")&&($c=="")&&($o=="")){  
print "
nicht über Proxy";  
}  
else {  
print "
via Proxy";  
print '
http_via: ';print $v;  
print '
http_x_forwarded_for: ';print $f;  
print '
http_xroxy_connection: ';print $c;  
print '
http_pragma: ';print $o;  
}  
?>