用php來檢測proxy

能夠檢測大部分通過代理服務器訪問的ip. 
<?php 
//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 ’<br>REMOTE_ADDR’; 
print $ip; 


if (($v==””)&&($f==””)&&($c==””)&&($o==””)){ 
print “<br>not through proxy”; 

else { 
print “<br>through proxy”; 
print ’<br>http_via: ’;print $v; 
print ’<br>http_x_forwarded_for: ’;print $f; 
print ’<br>http_xroxy_connection: ’;print $c; 
print ’<br>http_pragma: ’;print $o; 

?> 

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