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cancio-labs/cnpj-validation-function
====================================

A function to validate a CNPJ (Brazilian Company ID)

1.0.0(1y ago)07GPL-3.0-or-laterPHPPHP ^8.0.0

Since Aug 17Pushed 1y ago1 watchersCompare

[ Source](https://github.com/canciolabs/cnpj-validation-function)[ Packagist](https://packagist.org/packages/cancio-labs/cnpj-validation-function)[ Docs](https://github.com/canciolabs/cnpj-validation-function)[ RSS](/packages/cancio-labs-cnpj-validation-function/feed)WikiDiscussions main Synced 1mo ago

READMEChangelog (1)Dependencies (1)Versions (3)Used By (0)

CNPJ functions
==============

[](#cnpj-functions)

This tiny package contains some functions to validate a CNPJ (Brazilian Company ID)

Requirements
------------

[](#requirements)

PHP >= 8.0.0

Installation
------------

[](#installation)

```
composer require cancio-labs/cnpj-validation-function

```

Functions
---------

[](#functions)

1. is\_valid\_cnpj
2. assert\_cnpj

How to use it
-------------

[](#how-to-use-it)

### is\_valid\_cnpj(string $cnpj): bool

[](#is_valid_cnpjstring-cnpj-bool)

Returns true if the CNPJ is valid, false otherwise.

```
use function CancioLabs\Cnpj\Functions\is_valid_cnpj;

// Passing formatted CNPJs
is_valid_cnpj('86.338.579/0001-12') // returns true
is_valid_cnpj('46.133.600/0001-01') // returns false

// Passing raw CNPJs
is_valid_cnpj('46133600000129') // returns true
is_valid_cnpj('46133600000101') // returns false

```

### assert\_cnpj(string $cnpj): void

[](#assert_cnpjstring-cnpj-void)

Validates the CNPJ and throw an InvalidArgumentException if the CNPJ is not valid.

```
use function CancioLabs\Cnpj\Functions\assert_cnpj;

// These 2 example will execute normally
assert_cnpj('27.187.233/0001-00');
assert_cnpj('27187233000100');

// These 3 examples throw InvalidArgumentException
assert_cnpj('')
assert_cnpj('foo')
assert_cnpj('27187233000111')

```

Running Tests
-------------

[](#running-tests)

- From the project root, run: `vendor/bin/phpunit .`

###  Health Score

25

—

LowBetter than 37% of packages

Maintenance34

Infrequent updates — may be unmaintained

Popularity4

Limited adoption so far

Community7

Small or concentrated contributor base

Maturity46

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

631d ago

### Community

Maintainers

![](https://www.gravatar.com/avatar/65afdceff66eba436390f0041cd197dfef88b72f96a719e11477c315eb797ebb?d=identicon)[nilosoares](/maintainers/nilosoares)

---

Top Contributors

[![nilosoares](https://avatars.githubusercontent.com/u/7283619?v=4)](https://github.com/nilosoares "nilosoares (1 commits)")

---

Tags

validationcnpjbrasil

###  Code Quality

TestsPHPUnit

### Embed Badge

![Health badge](/badges/cancio-labs-cnpj-validation-function/health.svg)

```
[![Health](https://phpackages.com/badges/cancio-labs-cnpj-validation-function/health.svg)](https://phpackages.com/packages/cancio-labs-cnpj-validation-function)
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