能够检测大部分通过代理服务器访问的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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