Validate any RNC with the DGII

A simple package to check a given RNC with the official Tax Authority, Dirección General de Impuestos Internos (DGII), in the Dominican Republic and few more options.

Installation

You can install the package via composer:

composer require seisigmasrl/dgii-rnc-validator

Usage

This package aims to bring you a simple way to check and validate if a given RNC is valid and its current status with the tax authorities. Most existing solutions are based on parsing a monthly shared file with all the existing RNC by the Dirección General de Impuestos Internos (DGII), the official Tax Authority in the Dominican Republic.

This approach is excellent for improving performance, but It's not optimal for services requiring life, trusted information. For this reason, the current package provides a simple API to:

• Validate RNC's
• Verify if the Given RNC it's valid.

But how? There's 'somewhere' 😅, a "real" public non-documented endpoint used by the Tax Authorities that provide a set of tools to validate information with the DGII. This endpoint provides several options, but we will only use the RNC Validation for the scope of this package.

Here's the list of the provided methods by this package:

Check

Validate if a given RNC is valid and returns the details of the Taxpayer but false if not valid.
How to use it:

require Seisigma\DgiiRncValidator\DgiiRncValidator;
...
// 132620951 is a valid RNC
$validatedRnc = DgiiRncValidator::check("132620951");
var_dump($validatedRnc);

// array(4) {
//    ["rnc"]=> string(9) "132620951"
//    ["name"]=> string(29) "KOI CORPORATION BY SAIKOV SRL"
//    ["commercial_name"]=> string(25) "KOI CORPORATION BY SAIKOV"
//    ["status"]=> string(6) "Active"
// }

// 123456789 is an invalid RNC
$validatedRnc = DgiiRncValidator::check("123456789");
var_dump($validatedRnc); // bool(false)

validateRNC

Validate if a given string is a valid RNC.
How to use it:

require Seisigma\DgiiRncValidator\DgiiRncValidator;
...
// 132620951 is a valid RNC
$validatedRnc = DgiiRncValidator::validateRNC("132620951");
var_dump($validatedRnc); // bool(true)

// 123456789 is an invalid RNC
$validatedRnc = DgiiRncValidator::validateRNC("123456789");
var_dump($validatedRnc); // bool(false)

rncType

Validate if a given string is a valid RNC.
How to use it:

require Seisigma\DgiiRncValidator\DgiiRncValidator;
...
// 132620951 is a valid RNC
$rncType = DgiiRncValidator::rncType("132620951");
var_dump($rncType); // enum(Types::RNC)

// 123456789 is an invalid RNC
$rncType = DgiiRncValidator::rncType("04800009577");
var_dump($rncType); // enum(Types::CEDULA)

The Type enum includes two functions:

• toString: Return the string value from the returned enum. Ex:

var_dump(Types::RNC->toString()) // string(RNC)

• toCode: Return the DGII type code value from the returned enum. Ex:

var_dump(Types::RNC->toCode()) // string(01)

Helper Functions

Just in case you need a few extra tools, here's a list of utility functions:

getNumbers

This function returns all numbers from any provided string.
How to use it:

require Seisigma\DgiiRncValidator\helpers\Utils;
...
$results = Utils::getNumbers("abc123456");
var_dump($results); // string(6) "123456"

$results = Utils::getNumbers("asdfasdfs");
var_dump($results); // bool(false)

luhnAlgorithmValidation

This function validates if the given sequence of digits has a valid key (checksum).
How to use it:

require Seisigma\DgiiRncValidator\helpers\Utils;
...
$result = Utils::luhnAlgorithmValidation("79927398713");
var_dump($result); // bool(true)

$result = Utils::luhnAlgorithmValidation("79927398715");
var_dump($result); // bool(false)

validateDominicanCitizenId

This function validates if the given sequence of digits is a valid Dominican Citizen Id.
How to use it:

require Seisigma\DgiiRncValidator\helpers\Utils;
...
$result = Utils::validateDominicanCitizenId("04800009575");
var_dump($result); // bool(true)

$result = Utils::validateDominicanCitizenId("04800009577");
var_dump($result); // bool(false)

Testing

composer test

Changelog

Please see CHANGELOG for more information on what has changed recently.

Contributing

Please see CONTRIBUTING for details.

Security Vulnerabilities

Please review our security policy on how to report security vulnerabilities.

Credits

• Ricardo A. Vargas R.
• All Contributors

License

The MIT License (MIT). Please see License File for more information.