NukeViet\Core\Ips::nv_get_forwardip PHP Метод

    private function nv_get_forwardip()
    {
        if ($this->nv_getenv('HTTP_X_FORWARDED_FOR') and $this->nv_validip($this->nv_getenv('HTTP_X_FORWARDED_FOR'))) {
            return $this->nv_getenv('HTTP_X_FORWARDED_FOR');
        } elseif ($this->nv_getenv('HTTP_X_FORWARDED') and $this->nv_validip($this->nv_getenv('HTTP_X_FORWARDED'))) {
            return $this->nv_getenv('HTTP_X_FORWARDED');
        } elseif ($this->nv_getenv('HTTP_FORWARDED_FOR') and $this->nv_validip($this->nv_getenv('HTTP_FORWARDED_FOR'))) {
            return $this->nv_getenv('HTTP_FORWARDED_FOR');
        } elseif ($this->nv_getenv('HTTP_FORWARDED') and $this->nv_validip($this->nv_getenv('HTTP_FORWARDED'))) {
            return $this->nv_getenv('HTTP_FORWARDED');
        } else {
            return 'none';
        }
    }