php 設置白名單ip

    //檢查白名單ip
    private function _checkAllowIp()
    {
        $allowIp = ['203.195.156.12'];
        $ip = $this->getIp();
        if (!in_array($ip, $allowIp)) {
            exit();
        }
    }

    /**
     * 獲取客戶端訪問ip
     */
    private function getIp()
    {
        if (getenv('HTTP_CLIENT_IP')) {
            $ip = getenv('HTTP_CLIENT_IP');
        } else if (getenv('HTTP_X_FORWARDED_FOR')) {
            $ip = getenv('HTTP_X_FORWARDED_FOR');
        } else if (getenv('REMOTE_ADDR')) {
            $ip = getenv('REMOTE_ADDR');
        } else {
            $ip = $_SERVER['REMOTE_ADDR'];
        }
        $ips = explode(',', $ip);
        if (count($ips) > 1) {
            $ip = $ips[0];
        }
        return $ip;
    }