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micdog/cnpj-alfa
================

Validação e formatação de CNPJ alfanumérico (SEFAZ/Serpro): 12 caracteres alfanuméricos + 2 DVs numéricos (módulo 11).

v1.0.0(8mo ago)20MITPHPPHP >=8.1

Since Aug 28Pushed 8mo agoCompare

[ Source](https://github.com/micdog22/CNPJ-Alfanumerico)[ Packagist](https://packagist.org/packages/micdog/cnpj-alfa)[ RSS](/packages/micdog-cnpj-alfa/feed)WikiDiscussions main Synced 1mo ago

READMEChangelog (1)Dependencies (1)Versions (2)Used By (0)

CNPJ Alfanumérico (SEFAZ)
=========================

[](#cnpj-alfanumérico-sefaz)

Validação e formatação de **CNPJ alfanumérico**: 12 caracteres alfanuméricos + **2 dígitos verificadores numéricos** calculados por **módulo 11** (pesos 2..9 da direita para a esquerda, cíclico).
Mapeamento de caracteres: **valor = `ord(ch) - 48`**.

Instalação
----------

[](#instalação)

```
composer require micdog/cnpj-alfa
```

> Desenvolvimento:
>
> ```
> git clone https://github.com/micdog22/CNPJ-Alfanumerico.git
> cd CNPJ-Alfanumerico
> composer install
> ```

Uso
---

[](#uso)

```
use MicDog\CnpjAlfa\CnpjAlfa;

// Validar
$ok  = CnpjAlfa::validate('12ABC34501DE35'); // true/false
$fmt = CnpjAlfa::format('12abc34501de35');   // "12.ABC.345/01DE-35"

// Calcular DV (quando você tem só os 12 primeiros)
[$dv1, $dv2] = CnpjAlfa::computeDv('12ABC34501DE'); // [int, int]
```

CLI de demonstração
-------------------

[](#cli-de-demonstração)

```
php bin/demo "12ABC34501DE35" "59.952.259/0001-85"
```

Saída esperada:

```
[OK] 12.ABC.345/01DE-35
[OK] 59.952.259/0001-85

```

Regras (resumo)
---------------

[](#regras-resumo)

- Corpo: **12** caracteres `[A-Z0-9]`
- DV1: módulo 11 aplicando pesos `2..9` da direita para a esquerda.
- DV2: repete o cálculo com os **13** primeiros (12 + DV1).
- Dígitos finais devem ser numéricos.

Testes
------

[](#testes)

```
composer test
```

Licença
-------

[](#licença)

MIT

###  Health Score

30

—

LowBetter than 64% of packages

Maintenance60

Regular maintenance activity

Popularity3

Limited adoption so far

Community6

Small or concentrated contributor base

Maturity44

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

256d ago

### Community

Maintainers

![](https://www.gravatar.com/avatar/42e0eecb7846a48b8f5bd1d1ad1cb45130ea62460b504cfbb35fa30116a392c1?d=identicon)[micdog22](/maintainers/micdog22)

---

Top Contributors

[![micdog22](https://avatars.githubusercontent.com/u/181417941?v=4)](https://github.com/micdog22 "micdog22 (3 commits)")

###  Code Quality

TestsPHPUnit

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![Health badge](/badges/micdog-cnpj-alfa/health.svg)

```
[![Health](https://phpackages.com/badges/micdog-cnpj-alfa/health.svg)](https://phpackages.com/packages/micdog-cnpj-alfa)
```

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