PHP获取真实IP地址（获取本地127.0.0.1真实地址）

PHP获取真实IP地址

    public function get_real_ip(){

        static $realip;

        if(isset($_SERVER)){

            if(isset($_SERVER['HTTP_X_FORWARDED_FOR'])){

                $realip=$_SERVER['HTTP_X_FORWARDED_FOR'];

            }else if(isset($_SERVER['HTTP_CLIENT_IP'])){

                $realip=$_SERVER['HTTP_CLIENT_IP'];

            }else{

                $realip=$_SERVER['REMOTE_ADDR'];

            }

        }else{

            if(getenv('HTTP_X_FORWARDED_FOR')){

                $realip=getenv('HTTP_X_FORWARDED_FOR');

            }else if(getenv('HTTP_CLIENT_IP')){

                $realip=getenv('HTTP_CLIENT_IP');

            }else{

                $realip=getenv('REMOTE_ADDR');

            }

        }

        return $realip;

    }

    public function get_real_ip__()

    {

        $ip=FALSE;

        //客户端IP 或 NONE

        if(!empty($_SERVER["HTTP_CLIENT_IP"])){

            $ip = $_SERVER["HTTP_CLIENT_IP"];

        }

        //多重代理服务器下的客户端真实IP地址（可能伪造）,如果没有使用代理，此字段为空
        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; $i <($ips); $i++) {
                if (!eregi("^(10│172.16│192.168).", $ips[$i])) {
                    $ip = $ips[$i];
                    break;
                }
            }

        }

        //客户端IP 或 (最后一个)代理服务器 IP
        return ($ip ? $ip : $_SERVER['REMOTE_ADDR']);

    }

    public function get_real_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(!preg_match ('/^(10│172.16│192.168)./', $ips[$i])){

                    $ip=$ips[$i];

                    break;

                }

            }

        }

        return ($ip ? $ip : $_SERVER['REMOTE_ADDR']);

    }

    public function getLocalIP() {

        $preg = "/\A((([0-9]?[0-9])|(1[0-9]{2})|(2[0-4][0-9])|(25[0-5]))\.){3}(([0-9]?[0-9])|(1[0-9]{2})|(2[0-4][0-9])|(25[0-5]))\Z/";

        //获取操作系统为win2000/xp、win7的本机IP真实地址
        exec("ipconfig", $out, $stats);

        if (!empty($out)) {

            foreach ($out AS $row) {

                if (strstr($row, "IP") && strstr($row, ":") && !strstr($row, "IPv6")) {

                    $tmpIp = explode(":", $row);

                    if (preg_match($preg, trim($tmpIp[1]))) {

                        return trim($tmpIp[1]);

                    }

                }

            }

        }

        //获取操作系统为linux类型的本机IP真实地址
        exec("ifconfig", $out, $stats);

        if (!empty($out)) {

            if (isset($out[1]) && strstr($out[1], 'addr:')) {

                $tmpArray = explode(":", $out[1]);

                $tmpIp = explode(" ", $tmpArray[1]);

                if (preg_match($preg, trim($tmpIp[0]))) {

                    return trim($tmpIp[0]);

                }

            }

        }

        return '127.0.0.1';

    }