Utility function/class to format CNPJ (Brazilian employer ID).

PHP Support

Passing ✔	Passing ✔	Passing ✔	Passing ✔

Installation

# using Composer
$ composer require lacus/cnpj-fmt

Import

<?php
// Using class-based resource
use Lacus\CnpjFmt\CnpjFormatter;

// Or using function-based one
use function Lacus\CnpjFmt\cnpj_fmt;

Usage

Object-Oriented Usage

$formatter = new CnpjFormatter();
$cnpj = '03603568000195';

echo $formatter->format($cnpj);       // returns '03.603.568/0001-95'

// With options
echo $formatter->format(
    $cnpj,
    hidden: true,
    hiddenKey: '#',
    hiddenStart: 5,
    hiddenEnd: 13
);  // returns '03.603.###/####-##'

The options can be provided to the constructor or the format() method. If passed to the constructor, the options will be attached to the CnpjFormatter instance. When passed to the format() method, it only applies the options to that specific call.

$cnpj = '03603568000195';
$formatter = new CnpjFormatter(hidden: true);

echo $formatter->format($cnpj);                  // '03.603.***/****-**'
echo $formatter->format($cnpj, hidden: false);   // '03.603.568/0001-95' merges the options to the instance's
echo $formatter->format($cnpj);                  // '03.603.***/****-**' uses only the instance options

Imperative programming

The helper function cnpj_fmt() is just a functional abstraction. Internally it creates an instance of CnpjFormatter and calls the format() method right away.

$cnpj = '03603568000195';

echo cnpj_fmt($cnpj);       // returns '03.603.568/0001-95'

echo cnpj_fmt($cnpj, hidden: true);     // returns '03.603.***/****-**'

echo cnpj_fmt($cnpj, dotKey: '', slashKey: '|', dashKey: '_');     // returns '03603568|0001_95'

Formatting Options

Parameter	Type	Default	Description
escape	?bool	false	Whether to HTML escape the result
hidden	?bool	false	Whether to hide digits with a mask
hiddenKey	?string	'*'	Character to replace hidden digits
hiddenStart	?int	5	Starting index for hidden range (0-13)
hiddenEnd	?int	13	Ending index for hidden range (0-13)
dotKey	?string	'.'	String to replace dot characters
slashKey	?string	'/'	String to replace slash character
dashKey	?string	'-'	String to replace dash character
onFail	?callable	fn($v) => $v	Fallback function for invalid input

Contribution & Support

We welcome contributions! Please see our Contributing Guidelines for details. But if you find this project helpful, please consider:

• ⭐ Starring the repository
• 🤝 Contributing to the codebase
• 💡 Suggesting new features
• 🐛 Reporting bugs

License

This project is licensed under the MIT License - see the LICENSE file for details.

Changelog

See CHANGELOG for a list of changes and version history.

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Made with ❤️ by Lacus Solutions