Configurable country vat number format validator.

The package provides configurable services for validating country vat number formats.

Installation.

composer require rocketfellows/country-vat-number-format-validator

Dependencies.

• https://github.com/rocketfellows/iso-standard-3166-factory v1.0.0;
• https://github.com/rocketfellows/country-vat-number-format-validators-config v1.0.0;

References.

The packages below can be connected to the validator right away because they contain preconfigured validators for the following countries:

• https://github.com/rocketfellows/sk-vat-number-format-validators-config - Slovakia;
• https://github.com/rocketfellows/si-vat-number-format-validators-config - Slovenia;
• https://github.com/rocketfellows/se-vat-number-format-validators-config - Sweden;
• https://github.com/rocketfellows/ru-vat-number-format-validators-config - Russian Federation;
• https://github.com/rocketfellows/ro-vat-number-format-validators-config - Romania;
• https://github.com/rocketfellows/pt-vat-number-format-validators-config - Portugal;
• https://github.com/rocketfellows/pl-vat-number-format-validators-config - Poland;
• https://github.com/rocketfellows/no-vat-number-format-validators-config - Norway;
• https://github.com/rocketfellows/nl-vat-number-format-validators-config - Netherlands;
• https://github.com/rocketfellows/mt-vat-number-format-validators-config - Malta;
• https://github.com/rocketfellows/lv-vat-number-format-validators-config - Latvia;
• https://github.com/rocketfellows/lu-vat-number-format-validators-config - Luxembourg;
• https://github.com/rocketfellows/lt-vat-number-format-validators-config - Lithuania;
• https://github.com/rocketfellows/it-vat-number-format-validators-config - Italy;
• https://github.com/rocketfellows/ie-vat-number-format-validators-config - Ireland;
• https://github.com/rocketfellows/hu-vat-number-format-validators-config - Hungary;
• https://github.com/rocketfellows/hr-vat-number-format-validators-config - Croatia;
• https://github.com/rocketfellows/gr-vat-number-format-validators-config - Greece;
• https://github.com/rocketfellows/gb-vat-number-format-validators-config - United Kingdom;
• https://github.com/rocketfellows/fr-vat-number-format-validators-config - France;
• https://github.com/rocketfellows/fi-vat-number-format-validators-config - Finland;
• https://github.com/rocketfellows/es-vat-number-format-validators-config - Spain;
• https://github.com/rocketfellows/ee-vat-number-format-validators-config - Estonia;
• https://github.com/rocketfellows/dk-vat-number-format-validators-config - Denmark;
• https://github.com/rocketfellows/de-vat-number-format-validators-config - Germany;
• https://github.com/rocketfellows/cz-vat-number-format-validators-config - Czech Republic;
• https://github.com/rocketfellows/cy-vat-number-format-validators-config - Cyprus;
• https://github.com/rocketfellows/che-vat-number-format-validators-config - Switzerland;
• https://github.com/rocketfellows/bg-vat-number-format-validators-config - Bulgaria;
• https://github.com/rocketfellows/be-vat-number-format-validators-config - Belgium;
• https://github.com/rocketfellows/at-vat-number-format-validators-config - Austria;

Interface for validating country vat number format.

Service for checking the vat number format for the country: rocketfellows\CountryVatNumberFormatValidator\VatNumberFormatValidatorService

Function to check if the country vat number format is correct: rocketfellows\CountryVatNumberFormatValidator\VatNumberFormatValidatorService::validateCountryVatNumber

Input parameters:

• countryCode - string - country code in ISO 3166 standard (processable formats: alpha2, alpha3, numeric code);
• vatNumber - string - vat number;

Throwable exceptions:

• rocketfellows\CountryVatNumberFormatValidator\exceptions\CountryCodeEmptyException - when countryCode is empty string;
• rocketfellows\CountryVatNumberFormatValidator\exceptions\UnknownInputCountryCodeException - when CountryFactory cant find country according to given countryCode;
• rocketfellows\CountryVatNumberFormatValidator\exceptions\CountryValidatorsNotFoundException - when service not found validator for given country;
• rocketfellows\CountryVatNumberFormatValidator\exceptions\VatNumberValidatingException - when found validator for country throws any exception in process;

Return value is instance of rocketfellows\CountryVatNumberFormatValidator\VatNumberFormatValidationResult.

VatNumberFormatValidationResult description:

• createInvalidResult - static factory function for create invalid validation result, returns instance of VatNumberFormatValidationResult;
• createValidResult - static factory function for create valid validation result, returns instance of VatNumberFormatValidationResult;
• isValid - returns true if vat number is valid for given country, if vat number is invalid returns false;
• getPassedValidatorsClasses - returns array of classes (array of string), which was passed during validation process;
• getSuccessfullyValidatorClass - if vat number is valid for given country, returns validator class which succeed validation;

Usage example of preconfigured validators for countries.

To use the preconfigured validators for a country, you need to install the appropriate package from the list above from section "References".

Example of instantiating VatNumberFormatValidatorService:

$validatorService = new VatNumberFormatValidatorService(
    new CountryVatNumberFormatValidatorsConfigs(
        new SKVatNumberFormatValidatorsConfig(),
        new SIVatNumberFormatValidatorsConfig(),
        new SEVatNumberFormatValidatorsConfig(),
        new RUVatNumberFormatValidatorsConfig(),
        new ROVatNumberFormatValidatorsConfig(),
        new PTVatNumberFormatValidatorsConfig(),
        new PLVatNumberFormatValidatorsConfig(),
        new NOVatNumberFormatValidatorsConfig(),
        new NLVatNumberFormatValidatorsConfig(),
        new MTVatNumberFormatValidatorsConfig(),
        new LVVatNumberFormatValidatorsConfig(),
        new LUVatNumberFormatValidatorsConfig(),
        new LTVatNumberFormatValidatorsConfig(),
        new ITVatNumberFormatValidatorsConfig(),
        new IEVatNumberFormatValidatorsConfig(),
        new HUVatNumberFormatValidatorsConfig(),
        new HRVatNumberFormatValidatorsConfig(),
        new GRVatNumberFormatValidatorsConfig(),
        new GBVatNumberFormatValidatorsConfig(),
        new FRVatNumberFormatValidatorsConfig(),
        new FIVatNumberFormatValidatorsConfig(),
        new ESVatNumberFormatValidatorsConfig(),
        new EEVatNumberFormatValidatorsConfig(),
        new DKVatNumberFormatValidatorsConfig(),
        new DEVatNumberFormatValidatorsConfig(),
        new CZVatNumberFormatValidatorsConfig(),
        new CYVatNumberFormatValidatorsConfig(),
        new CHEVatNumberFormatValidatorsConfig(),
        new BGVatNumberFormatValidatorsConfig(),
        new BEVatNumberFormatValidatorsConfig(),
        new ATVatNumberFormatValidatorsConfig()
    ),
    new CountryFactory()
);

Valid country vat number format examples.

Austria vat number.

// country code case-insensitive
$result = $validatorService->validateCountryVatNumber('at', 'ATU62181819');

var_dump($result);

Validation result:

class rocketfellows\CountryVatNumberFormatValidator\VatNumberFormatValidationResult#101 (3) {
  private $isValid =>
  bool(true)
  private $passedValidatorsClasses =>
  array(1) {
    [0] =>
    string(55) "rocketfellows\ATVatFormatValidator\ATVatFormatValidator"
  }
  private $successfullyValidatorClass =>
  string(55) "rocketfellows\ATVatFormatValidator\ATVatFormatValidator"
}

Germany vat number.

// country code case-insensitive
$result = $validatorService->validateCountryVatNumber('de', 'DE282308599');

var_dump($result);

Validation result:

class rocketfellows\CountryVatNumberFormatValidator\VatNumberFormatValidationResult#101 (3) {
  private $isValid =>
  bool(true)
  private $passedValidatorsClasses =>
  array(1) {
    [0] =>
    string(55) "rocketfellows\DEVatFormatValidator\DEVatFormatValidator"
  }
  private $successfullyValidatorClass =>
  string(55) "rocketfellows\DEVatFormatValidator\DEVatFormatValidator"
}

Invalid country vat number format examples.

Austria vat number.

// country code case-insensitive
$result = $validatorService->validateCountryVatNumber('at', 'foo');

var_dump($result);

Validation result:

class rocketfellows\CountryVatNumberFormatValidator\VatNumberFormatValidationResult#99 (3) {
  private $isValid =>
  bool(false)
  private $passedValidatorsClasses =>
  array(1) {
    [0] =>
    string(55) "rocketfellows\ATVatFormatValidator\ATVatFormatValidator"
  }
  private $successfullyValidatorClass =>
  NULL
}

Germany vat number.

// country code case-insensitive
$result = $validatorService->validateCountryVatNumber('de', 'foo');

var_dump($result);

Validation result:

class rocketfellows\CountryVatNumberFormatValidator\VatNumberFormatValidationResult#99 (3) {
  private $isValid =>
  bool(false)
  private $passedValidatorsClasses =>
  array(1) {
    [0] =>
    string(55) "rocketfellows\DEVatFormatValidator\DEVatFormatValidator"
  }
  private $successfullyValidatorClass =>
  NULL
}

VatNumberFormatValidator.

In case you don't need the details of the validation process of the country vat number format, but just want to get the answer "vat number is valid or not", you can use the rocketfellows\CountryVatNumberFormatValidator\VatNumberFormatValidator.

Class methods:

• isValid - takes country code and vat number as arguments and returns boolean value.

VatNumberFormatValidator takes an object of type VatNumberFormatValidatorService as a dependency, which you must configure in advance.

Throwable exceptions:

• rocketfellows\CountryVatNumberFormatValidator\exceptions\CountryCodeEmptyException - when countryCode is empty string;
• rocketfellows\CountryVatNumberFormatValidator\exceptions\UnknownInputCountryCodeException - when CountryFactory cant find country according to given countryCode;
• rocketfellows\CountryVatNumberFormatValidator\exceptions\CountryValidatorsNotFoundException - when service not found validator for given country;
• rocketfellows\CountryVatNumberFormatValidator\exceptions\VatNumberValidatingException - when found validator for country throws any exception in process;

VatNumberFormatValidator configuration example.

$validator = new VatNumberFormatValidator(
    new VatNumberFormatValidatorService(
        new CountryVatNumberFormatValidatorsConfigs(
            new SKVatNumberFormatValidatorsConfig(),
            new SIVatNumberFormatValidatorsConfig(),
            new SEVatNumberFormatValidatorsConfig(),
            new RUVatNumberFormatValidatorsConfig(),
            new ROVatNumberFormatValidatorsConfig(),
            new PTVatNumberFormatValidatorsConfig(),
            new PLVatNumberFormatValidatorsConfig(),
            new NOVatNumberFormatValidatorsConfig(),
            new NLVatNumberFormatValidatorsConfig(),
            new MTVatNumberFormatValidatorsConfig(),
            new LVVatNumberFormatValidatorsConfig(),
            new LUVatNumberFormatValidatorsConfig(),
            new LTVatNumberFormatValidatorsConfig(),
            new ITVatNumberFormatValidatorsConfig(),
            new IEVatNumberFormatValidatorsConfig(),
            new HUVatNumberFormatValidatorsConfig(),
            new HRVatNumberFormatValidatorsConfig(),
            new GRVatNumberFormatValidatorsConfig(),
            new GBVatNumberFormatValidatorsConfig(),
            new FRVatNumberFormatValidatorsConfig(),
            new FIVatNumberFormatValidatorsConfig(),
            new ESVatNumberFormatValidatorsConfig(),
            new EEVatNumberFormatValidatorsConfig(),
            new DKVatNumberFormatValidatorsConfig(),
            new DEVatNumberFormatValidatorsConfig(),
            new CZVatNumberFormatValidatorsConfig(),
            new CYVatNumberFormatValidatorsConfig(),
            new CHEVatNumberFormatValidatorsConfig(),
            new BGVatNumberFormatValidatorsConfig(),
            new BEVatNumberFormatValidatorsConfig(),
            new ATVatNumberFormatValidatorsConfig()
        ),
        new CountryFactory()
    )
);

VatNumberFormatValidator usage examples.

Austria valid vat number validation:

$result = $validator->isValid('at', 'ATU62181819');
var_dump($result);

Validation result:

bool(true)

Austria invalid vat number validation:

$result = $validator->isValid('at', 'ATU61819');
var_dump($result);

Validation result:

bool(false)

Expandability.

If you need to expand the list of countries whose vat numbers you want to check, you will need to do the following:

• implement a validator for the vat number of the required country - a class that implements the rocketfellows\CountryVatFormatValidatorInterface\CountryVatFormatValidatorInterface interface;
• connect the validator with the country through a class that implements the interface rocketfellows\CountryVatNumberFormatValidatorsConfig\CountryVatNumberFormatValidatorsConfigInterface;
• connect the config linking the country with the validator to the tuple rocketfellows\CountryVatNumberFormatValidatorsConfig\CountryVatNumberFormatValidatorsConfigs;

Example

Suppose we need to add a vat number validator for the country Qatar.

First we need to implement the vat number validator for the country - a class that implements the interface rocketfellows\CountryVatFormatValidatorInterface\CountryVatFormatValidatorInterface.

For simplicity, let's assume that a valid vat number is a string that contains only numbers and consists of three characters.

To implement the validator interface, we use the prepared abstract class rocketfellows\CountryVatFormatValidatorInterface\CountryVatFormatValidator.

Validator implementation:

namespace rocketfellows\CountryVatNumberFormatValidator\qa;

use rocketfellows\CountryVatFormatValidatorInterface\CountryVatFormatValidator;

class QAVatFormatValidator extends CountryVatFormatValidator
{
    private const VAT_NUMBER_PATTERN = '/^\d{3}$/';

    protected function isValidFormat(string $vatNumber): bool
    {
        return (bool) preg_match(self::VAT_NUMBER_PATTERN, $vatNumber);
    }
}

Next, you need to associate the validator with the country through the configurator class. Class must implement rocketfellows\CountryVatNumberFormatValidatorsConfig\CountryVatNumberFormatValidatorsConfigInterface.

Config class:

namespace rocketfellows\CountryVatNumberFormatValidator\qa;

use arslanimamutdinov\ISOStandard3166\Country;
use arslanimamutdinov\ISOStandard3166\ISO3166;
use rocketfellows\CountryVatFormatValidatorInterface\CountryVatFormatValidatorInterface;
use rocketfellows\CountryVatFormatValidatorInterface\CountryVatFormatValidators;
use rocketfellows\CountryVatNumberFormatValidatorsConfig\CountryVatNumberFormatValidatorsConfigInterface;

class QAVatNumberFormatValidatorsConfig implements CountryVatNumberFormatValidatorsConfigInterface
{
    private $validators;
    
    public function __construct(CountryVatFormatValidatorInterface $validator)
    {
        $this->validators = new CountryVatFormatValidators($validator);
    }

    public function getCountry(): Country
    {
        return ISO3166::QA();
    }

    public function getValidators(): CountryVatFormatValidators
    {
        return $this->validators;
    }
}

And that's almost all, we just need to connect the new configuration to the service rocketfellows\CountryVatNumberFormatValidator\VatNumberFormatValidatorService.

VatNumberFormatValidatorService configuration:

$validatorService = new VatNumberFormatValidatorService(
    new CountryVatNumberFormatValidatorsConfigs(
        new QAVatNumberFormatValidatorsConfig(new QAVatFormatValidator()),
        new ATVatNumberFormatValidatorsConfig(),
        new DEVatNumberFormatValidatorsConfig()
    ),
    new CountryFactory()
);

As you can see, in addition to the vat validators for Austria and Germany, we have included a validator for the country Qatar.

An example of a valid vat number for the country Qatar from our example:

$result = $validatorService->validateCountryVatNumber('qa', '123');
var_dump($result);

Result:

class rocketfellows\CountryVatNumberFormatValidator\VatNumberFormatValidationResult#17 (3) {
  private $isValid =>
  bool(true)
  private $passedValidatorsClasses =>
  array(1) {
    [0] =>
    string(69) "rocketfellows\CountryVatNumberFormatValidator\qa\QAVatFormatValidator"
  }
  private $successfullyValidatorClass =>
  string(69) "rocketfellows\CountryVatNumberFormatValidator\qa\QAVatFormatValidator"
}

An example of an invalid vat number for the country Qatar from our example:

$result = $validatorService->validateCountryVatNumber('qa', 'foo');
var_dump($result);

Result:

class rocketfellows\CountryVatNumberFormatValidator\VatNumberFormatValidationResult#15 (3) {
  private $isValid =>
  bool(false)
  private $passedValidatorsClasses =>
  array(1) {
    [0] =>
    string(69) "rocketfellows\CountryVatNumberFormatValidator\qa\QAVatFormatValidator"
  }
  private $successfullyValidatorClass =>
  NULL
}

As you can see it works great.

Contributing.

Welcome to pull requests. If there is a major changes, first please open an issue for discussion.

Please make sure to update tests as appropriate.