1. Go to this page and download the library: Download kekos/gs1 library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
kekos / gs1 example snippets
$entity = new \Gs1\Entity\WeightProduct($sku, $weight);
$entity = new \Gs1\Entity\PriceProduct($sku, $price);
$entity = new \Gs1\Entity\Publication($sku, $price);
$entity = new \Gs1\Entity\Coupon($id, $discount);