<?php
namespace Faker\Provider\en_GB;
class Company extends \Faker\Provider\Company
{
public const VAT_PREFIX = 'GB';
public const VAT_TYPE_DEFAULT = 'vat';
public const VAT_TYPE_BRANCH = 'branch';
public const VAT_TYPE_GOVERNMENT = 'gov';
public const VAT_TYPE_HEALTH_AUTHORITY = 'health';
/**
* UK VAT number
*
* This method produces numbers that are _reasonably_ representative
* of those issued by government
*
* @see https://en.wikipedia.org/wiki/VAT_identification_number#VAT_numbers_by_country
*/
public static function vat(string $type = null): string
{
switch ($type) {
case static::VAT_TYPE_BRANCH:
return static::generateBranchTraderVatNumber();
case static::VAT_TYPE_GOVERNMENT:
return static::generateGovernmentVatNumber();
case static::VAT_TYPE_HEALTH_AUTHORITY:
return static::generateHealthAuthorityVatNumber();
default:
return static::generateStandardVatNumber();
}
}
/**
* Standard
* 9 digits (block of 3, block of 4, block of 2)
*
* This uses the format introduced November 2009 onward where the first
* block starts from 100 and the final two digits are generated via a the
* modulus 9755 algorithm
*/
private static function generateStandardVatNumber(): string
{
$firstBlock = static::numberBetween(100, 999);
$secondBlock = static::randomNumber(4, true);
return sprintf(
'%s%d %d %d',
static::VAT_PREFIX,
$firstBlock,
$secondBlock,
static::calculateModulus97($firstBlock . $secondBlock),
);
}
/**
* Health authorities
* the letters HA then 3 digits from 500 to 999 (e.g. GBHA599)
*/
private static function generateHealthAuthorityVatNumber(): string
{
return sprintf(
'%sHA%d',
static::VAT_PREFIX,
static::numberBetween(500, 999),
);
}
/**
* Branch traders
* 12 digits (as for 9 digits, followed by a block of 3 digits)
*/
private static function generateBranchTraderVatNumber(): string
{
return sprintf(
'%s %d',
static::generateStandardVatNumber(),
static::randomNumber(3, true),
);
}
/**
* Government departments
* the letters GD then 3 digits from 000 to 499 (e.g. GBGD001)
*/
private static function generateGovernmentVatNumber(): string
{
return sprintf(
'%sGD%s',
static::VAT_PREFIX,
str_pad((string) static::numberBetween(0, 499), 3, '0', STR_PAD_LEFT),
);
}
/**
* Apply a Modulus97 algorithm to an input
*
* @see https://library.croneri.co.uk/cch_uk/bvr/43-600
*/
public static function calculateModulus97(string $input, bool $use9755 = true): string
{
$digits = str_split($input);
if (count($digits) !== 7) {
throw new \InvalidArgumentException();
}
$multiplier = 8;
$sum = 0;
foreach ($digits as $digit) {
$sum += (int) $digit * $multiplier;
--$multiplier ;
}
if ($use9755) {
$sum = $sum + 55;
}
while ($sum > 0) {
$sum -= 97;
}
$sum = $sum * -1;
return str_pad((string) $sum, 2, '0', STR_PAD_LEFT);
}
}
In the digital age, privacy concerns have become increasingly paramount, prompting the European Union to enact the General Data Protection Regulation (GDPR) in 2018. Among its many provisions, GDPR sets strict guidelines for the collection and processing of personal data, including the use of cookies on websites. Privacy Policy
