用php来检测proxy

终于写出个有用的东西了！ 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;;;};;?>;;