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ActiveLibrary[Validation & Sanitization](/categories/validation)

cryonighter/inn-checksum
========================

This package validates the Russian Tax Identification Number of Legal Persons, Individual Entrepreneurs and Individual Person

1.0.0(8y ago)38.5kMITPHPPHP >=7.1.0

Since Feb 20Pushed 8y ago1 watchersCompare

[ Source](https://github.com/cryonighter/inn-checksum)[ Packagist](https://packagist.org/packages/cryonighter/inn-checksum)[ RSS](/packages/cryonighter-inn-checksum/feed)WikiDiscussions master Synced yesterday

READMEChangelogDependencies (1)Versions (2)Used By (0)

Inn Checksum
============

[](#inn-checksum)

[![Latest Version on Packagist](https://camo.githubusercontent.com/d6f5e034d66816010800fcaf4f4ca616e4e446fa3d99bf71a96a6b57ae94764b/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f762f6372796f6e6967687465722f696e6e2d636865636b73756d2e7376673f7374796c653d666c61742d737175617265)](https://packagist.org/packages/cryonighter/inn-checksum)[![Software License](https://camo.githubusercontent.com/55c0218c8f8009f06ad4ddae837ddd05301481fcf0dff8e0ed9dadda8780713e/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f6c6963656e73652d4d49542d627269676874677265656e2e7376673f7374796c653d666c61742d737175617265)](LICENSE.md)[![Total Downloads](https://camo.githubusercontent.com/835554bfbb5af089421c1059cda63f8b9af15da9897feeb441672a4f5088ad64/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f64742f6372796f6e6967687465722f696e6e2d636865636b73756d2e7376673f7374796c653d666c61742d737175617265)](https://packagist.org/packages/cryonighter/inn-checksum)

This package validates the Russian Tax Identification Number of Legal Persons, Individual Entrepreneurs and Individual Person

Highlights
----------

[](#highlights)

- Simple API
- Framework Agnostic
- Composer ready, [PSR-2](http://www.php-fig.org/psr/psr-2/) and [PSR-4](http://www.php-fig.org/psr/psr-4/) compliant

System Requirements
-------------------

[](#system-requirements)

You need:

- **PHP >= 7.1.0** but the latest stable version of PHP is recommended
- The `pcre` extension

Install
-------

[](#install)

Via Composer

```
$ composer require cryonighter/inn-checksum
```

Usage
-----

[](#usage)

```
use Cryonighter\InnChecksum\InnChecker;

if (InnChecker::check('1234567890')) {
    // Your code
}
```

Change log
----------

[](#change-log)

Please see [CHANGELOG](CHANGELOG.md) for more information on what has changed recently.

Testing
-------

[](#testing)

```
$ php vendor/phpunit/phpunit/phpunit tests
```

Contributing
------------

[](#contributing)

Please see [CONTRIBUTING](CONTRIBUTING.md) and [CODE\_OF\_CONDUCT](CODE_OF_CONDUCT.md) for details.

Security
--------

[](#security)

If you discover any security related issues, please email `cryonighter@yandex.ru` instead of using the issue tracker.

Credits
-------

[](#credits)

- [Andrey Reshetchenko](https://github.com/cryonighter)
- [All Contributors](../../contributors)

License
-------

[](#license)

The MIT License (MIT). Please see [License File](LICENSE.md) for more information.

###  Health Score

30

—

LowBetter than 62% of packages

Maintenance20

Infrequent updates — may be unmaintained

Popularity22

Limited adoption so far

Community7

Small or concentrated contributor base

Maturity58

Maturing project, gaining track record

 Bus Factor1

Top contributor holds 100% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Unknown

Total

1

Last Release

3052d ago

### Community

Maintainers

![](https://www.gravatar.com/avatar/640fd5daf250ddc27926b04a4fa74e2d8239c777475a783f155a6c9d47e1df78?d=identicon)[cryonighter](/maintainers/cryonighter)

---

Top Contributors

[![cryonighter](https://avatars.githubusercontent.com/u/20028293?v=4)](https://github.com/cryonighter "cryonighter (2 commits)")

---

Tags

taxpayertaxINNnalogналогоплательщикидентификационный номер налогоплательщика

###  Code Quality

TestsPHPUnit

### Embed Badge

![Health badge](/badges/cryonighter-inn-checksum/health.svg)

```
[![Health](https://phpackages.com/badges/cryonighter-inn-checksum/health.svg)](https://phpackages.com/packages/cryonighter-inn-checksum)
```

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