https://github.com/sunaoka/damm

A PHP library that calculates and verifies the check digit using the Damm algorithm.
https://github.com/sunaoka/damm

checkdigit damm

Last synced: 7 months ago
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A PHP library that calculates and verifies the check digit using the Damm algorithm.

• Host: GitHub
• URL: https://github.com/sunaoka/damm
• Owner: sunaoka
• Created: 2024-10-22T06:52:40.000Z (over 1 year ago)
• Default Branch: develop
• Last Pushed: 2024-10-30T04:27:04.000Z (over 1 year ago)
• Last Synced: 2025-03-22T05:51:11.440Z (about 1 year ago)
• Topics: checkdigit, damm
• Language: PHP
• Homepage: https://packagist.org/packages/sunaoka/damm
• Size: 58.6 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Damm algorithm for PHP

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---

A PHP library that calculates and verifies the check digit using the [Damm algorithm](https://en.wikipedia.org/wiki/Damm_algorithm).

Quasigroups are supported from order 3 to order 64 as well as order 10.

## Installation

```bash

composer require sunaoka/damm

```

## Usage

### Quasigroup of order 10 (default)

```php

calculate('572');

// => 4

var_dump($damm->validate('5724'));

// => bool(true)

```

### Quasigroup of order 62

```php

calculate('4MTYDKH0S0E');

// => D

var_dump($damm->validate('4MTYDKH0S0ED'));

// => bool(true)

```