SamMakesCode / upc

A library for calculating UPC (universal product code) check digits in PHP

UPC Checksum Calculator

A PHP library for calculating UPC (Universal Product Code) checksum digits.

Installation

Download and install this library using composer:

composer require samlittler/upc

Alternatively, download this repository as a ZIP and include the src/UPC.php file in your project.

Usage

Usage is simple

$your_product_code = '03600024145';
$checksum = \SamLittler\UPC\UPC::calculate($your_product_code); // returns 7