@description: Vat number ID validation for Europe, it can validate with regex acording to this: http://ec.europa.eu/taxation_customs/vies/faqvies.do and also using their online database http://ec.europa.eu/taxation_customs/vies/
@depends on: http://codeigniter.com/wiki/Curl_library/
Config:
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
$config['vat_checker_requester_ms'] = 'PT';
$config['vat_checker_requester_iso'] = 'PT';
$config['vat_checker_requester_vat'] = '000000000';
Library:
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
* European vat validation
*
* @author Manuel João Silva mail[at]manueljoaosilva.com
* @version 1.0
* @uses http://codeigniter.com/wiki/Curl_library/
*
*/
class Vat_checker
{
var $CI;
/**
* Contructor: Loads curl library and vat_checker config
*
* @return void
*/
function Vat_checker()
{
$this->CI =& get_instance();
$this->CI->load->library('curl');
$this->CI->config->load('vat_checker');
}
/**
* Validates againt http://ec.europa.eu/taxation_customs/vies/
* if vat number is valid. If it's valid
* returns Consultation Number for tracking porpuses
*
* @param string $vat
* @param string $country_iso
* @return string or boolean
*/
function is_valid_europa($vat, $country_iso)
{
$country_iso = strtoupper($country_iso);
$vat = str_replace($country_iso, '', $vat);
$post = array(
'ms' => $country_iso,
'iso' => $country_iso,
'vat' => $vat,
'requesterMs' => $this->CI->config->item('vat_checker_requester_ms'),
'requesterIso' => $this->CI->config->item('vat_checker_requester_iso'),
'requesterVat' => $this->CI->config->item('vat_checker_requester_vat'),
'BtnSubmitVat' => 'Verify'
);
$resp = $this->CI->curl->simple_post('http://ec.europa.eu/taxation_customs/vies/viesquer.do', $post);
if (preg_match('/\svalid\sVAT\s/',$resp))
{
preg_match_all('/(WAPIAAAA.*)/', $resp, $match);
return trim($match[0][0]);
}
else
{
return FALSE;
}
}
/**
* Based on rules in http://ec.europa.eu/taxation_customs/vies/faqvies.do
* check if nif is valid
*
* @param string $vat
* @param string $country_iso
* @return boolean
*/
function is_valid_regex($vat, $country_iso)
{
$country_iso = strtoupper($country_iso);
$regex = '';
switch ($country_iso)
{
case 'AT':
$regex = '/^U[0-9]{8}$/';
break;
case 'BE':
$regex = '/^0?[0-9]{*}$/';
break;
case 'CZ':
$regex = '/^[0-9]{8,10}$/';
break;
case 'DE':
$regex = '/^[0-9]{9}$/';
break;
case 'CY':
$regex = '/^[0-9]{8}[A-Z]$/';
break;
case 'DK':
$regex = '/^[0-9]{8}$/';
break;
case 'EE':
$regex = '/^[0-9]{9}$/';
break;
case 'GR':
$regex = '/^[0-9]{9}$/';
break;
case 'ES':
$regex = '/^[0-9A-Z][0-9]{7}[0-9A-Z]$/';
break;
case 'FI':
$regex = '/^[0-9]{8}$/';
break;
case 'FR':
$regex = '/^[0-9A-Z]{2}[0-9]{9}$/';
break;
case 'GB':
$regex = '/^([0-9]{9}|[0-9]{12})~(GD|HA)[0-9]{3}$/';
break;
case 'HU':
$regex = '/^[0-9]{8}$/';
break;
case 'IE':
$regex = '/^[0-9][A-Z0-9\\+\\*][0-9]{5}[A-Z]$/';
break;
case 'IT':
$regex = '/^[0-9]{11}$/';
break;
case 'LT':
$regex = '/^([0-9]{9}|[0-9]{12})$/';
break;
case 'LU':
$regex = '/^[0-9]{8}$/';
break;
case 'LV':
$regex = '/^[0-9]{11}$/';
break;
case 'MT':
$regex = '/^[0-9]{8}$/';
break;
case 'NL':
$regex = '/^[0-9]{9}B[0-9]{2}$/';
break;
case 'PL':
$regex = '/^[0-9]{10}$/';
break;
case 'PT':
$regex = '/^[0-9]{9}$/';
break;
case 'SE':
$regex = '/^[0-9]{12}$/';
break;
case 'SI':
$regex = '/^[0-9]{8}$/';
break;
case 'SK':
$regex = '/^[0-9]{10}$/';
break;
default:
return FALSE;
break;
}
$vat = str_replace($country_iso, '', $vat);
return (preg_match($regex,$vat));
}
}