Toolkit to deal with CPF data (Brazilian personal ID): validation, formatting and generation of valid IDs.

PHP Support

Passing ✔	Passing ✔	Passing ✔	Passing ✔

Installation

$ composer require lacus/cpf-utils

Import

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

// Or using function-based approach
use function Lacus\CpfUtils\cpf_fmt;
use function Lacus\CpfUtils\cpf_gen;
use function Lacus\CpfUtils\cpf_val;

Usage

Object-Oriented Usage

The CpfUtils class provides a unified interface for all CPF operations:

$cpfUtils = new CpfUtils();
$cpf = '11144477735';

// Format CPF
echo $cpfUtils->format($cpf);       // returns '111.444.777-35'

// Validate CPF
echo $cpfUtils->isValid($cpf);      // returns true

// Generate CPF
echo $cpfUtils->generate();         // returns '12345678901'

With Configuration Options

You can configure the formatter and generator options in the constructor:

$cpfUtils = new CpfUtils(
    formatter: [
        'hidden' => true,
        'hiddenKey' => '#',
        'hiddenStart' => 3,
        'hiddenEnd' => 9
    ],
    generator: [
        'format' => true
    ]
);

$cpf = '11144477735';
echo $cpfUtils->format($cpf);       // returns '111.###.###-##'
echo $cpfUtils->generate();         // returns '123.456.789-01'

Functional Programming

The package also provides standalone functions for each operation:

$cpf = '11144477735';

// Format CPF
echo cpf_fmt($cpf);                 // returns '111.444.777-35'

// Validate CPF
echo cpf_val($cpf);                 // returns true

// Generate CPF
echo cpf_gen();                     // returns '12345678901'

API Reference

Formatting (cpf_fmt / CpfUtils::format)

Formats a CPF string with customizable delimiters and masking options.

cpf_fmt(
    string $cpfString,
    ?bool $escape = null,
    ?bool $hidden = null,
    ?string $hiddenKey = null,
    ?int $hiddenStart = null,
    ?int $hiddenEnd = null,
    ?string $dotKey = null,
    ?string $dashKey = null,
    ?Closure $onFail = null,
): string

Parameters:

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	3	Starting index for hidden range (0-10)
hiddenEnd	?int	9	Ending index for hidden range (0-10)
dotKey	?string	'.'	String to replace dot characters
dashKey	?string	'-'	String to replace dash character
onFail	?callable	fn($v) => $v	Fallback function for invalid input

Examples:

$cpf = '11144477735';

// Basic formatting
echo cpf_fmt($cpf);                 // '111.444.777-35'

// With hidden digits
echo cpf_fmt($cpf, hidden: true);   // '111.***.***-**'

// Custom delimiters
echo cpf_fmt($cpf, dotKey: '', dashKey: '_');  // '111444777_35'

// Custom hidden range
echo cpf_fmt($cpf, hidden: true, hiddenStart: 0, hiddenEnd: 6, hiddenKey: '#');  // '###.###.777-35'

Generation (cpf_gen / CpfUtils::generate)

Generates valid CPF numbers with optional formatting and prefix completion.

cpf_gen(
    ?bool $format = null,
    ?string $prefix = null,
): string

Parameters:

Parameter	Type	Default	Description
format	?bool	false	Whether to format the output
prefix	?string	''	Prefix to complete with valid digits (1-9 digits)

Examples:

// Generate random CPF
echo cpf_gen();                     // '12345678901'

// Generate formatted CPF
echo cpf_gen(format: true);         // '123.456.789-01'

// Complete a prefix
echo cpf_gen(prefix: '123456789');  // '12345678901'

// Complete and format
echo cpf_gen(prefix: '123456789', format: true);  // '123.456.789-01'

Validation (cpf_val / CpfUtils::isValid)

Validates CPF numbers using the official algorithm.

cpf_val(string $cpfString): bool

Examples:

// Valid CPF
echo cpf_val('11144477735');        // true
echo cpf_val('111.444.777-35');     // true

// Invalid CPF
echo cpf_val('11144477736');        // false

Advanced Usage

Accessing Individual Components

You can access the individual formatter, generator, and validator instances:

$cpfUtils = new CpfUtils();

// Get individual components
$formatter = $cpfUtils->getFormatter();
$generator = $cpfUtils->getGenerator();
$validator = $cpfUtils->getValidator();

// Use them directly
$formatter->format('11144477735', hidden: true);
$generator->generate(format: true);
$validator->isValid('11144477735');

Custom Error Handling

$cpf = '123'; // Invalid length

// Custom fallback
echo cpf_fmt($cpf, onFail: fn($v) => "Invalid CPF: {$v}");  // 'Invalid CPF: 123'

// Return original value
echo cpf_fmt($cpf);  // '123'

Dependencies

This package is built on top of the following specialized packages:

• lacus/cpf-fmt - CPF formatting
• lacus/cpf-gen - CPF generation
• lacus/cpf-val - CPF validation

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