README

Check digit formula base on https://www.gs1.org/services/how-calculate-check-digit-manually, and tested by https://www.gs1.org/services/check-digit-calculator

Installation

You can install the package via composer:

composer require lloricode/check-digit

Usage

// Sample usage in testing
// tests/Feature/GenerateTest.php

use Lloricode\CheckDigit\Enums\Format;
use Lloricode\CheckDigit\Generator;

# base in https://www.gs1.org/services/check-digit-calculator

assertSame(2, Generator::new(9638527, Format::GTIN_8)->getCheckDigit());
assertSame(4, Generator::new(3216549, Format::GTIN_8)->getCheckDigit());

assertSame(2, Generator::new(91739456321, Format::GTIN_12)->getCheckDigit());
assertSame(8, Generator::new(74185245963, Format::GTIN_12)->getCheckDigit());

assertSame(3, Generator::new(629104150021, Format::GTIN_13)->getCheckDigit());
assertSame(6, Generator::new(123456789876, Format::GTIN_13)->getCheckDigit());

assertSame(6, Generator::new(7539514528423, Format::GTIN_14)->getCheckDigit());
assertSame(5, Generator::new(8563251459762, Format::GTIN_14)->getCheckDigit());

assertSame(0, Generator::new(7896541230123456, Format::GSIN)->getCheckDigit());
assertSame(3, Generator::new(7658485040650456, Format::GSIN)->getCheckDigit());

assertSame(6, Generator::new(95135623050123698, Format::SSCC)->getCheckDigit());
assertSame(7, Generator::new(87643802105978513, Format::SSCC)->getCheckDigit());

// get generated value
assertSame('876438021059785137', Generator::new(87643802105978513, Format::SSCC)->getValue());

// starts with zero
assertSame(7, Generator::new('0012345', Format::GTIN_8)->getCheckDigit());
assertSame(5, Generator::new('00123456789', Format::GTIN_12)->getCheckDigit());
assertSame(5, Generator::new('001234567890', Format::GTIN_13)->getCheckDigit());
assertSame(2, Generator::new('0012345678901', Format::GTIN_14)->getCheckDigit());
assertSame(3, Generator::new('0012345678901234', Format::GSIN)->getCheckDigit());
assertSame(2, Generator::new('00123456789012345', Format::SSCC)->getCheckDigit());

Testing

vendor/bin/pest

Changelog

Please see CHANGELOG for more information on what has changed recently.

Contributing

Please see CONTRIBUTING for details.

Security

If you discover any security related issues, please email lloricode@gmail.com instead of using the issue tracker.

Credits

• Lloric Mayuga Garcia
• All Contributors

License

The MIT License (MIT). Please see License File for more information.