获取客户端 ip

        $ip = false;
        if (!empty($_SERVER["HTTP_CLIENT_IP"])) {
            $ip = $_SERVER["HTTP_CLIENT_IP"];
        }
        if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
            $ips = explode(", ", $_SERVER['HTTP_X_FORWARDED_FOR']);
            if ($ip) {
                array_unshift($ips, $ip);
                $ip = FALSE;
            }
            for ($i = 0; $i < count($ips); $i++) {
                if (!eregi("^(10│172.16│192.168).", $ips[$i])) {
                    $ip = $ips[$i];
                    break;
                }
            }
        }
        $ipName = $ip ? $ip : $_SERVER['REMOTE_ADDR'];
        $this->ip = $ipName;
        return $this->ip;