1. Go to this page and download the library: Download printsites/deliv-php 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/ */
printsites / deliv-php example snippets
$client = new \Deliv\DelivClient('apikey', 'production||<defaults_to_staging>');
$client->deliveries->cancelDelivery('<delivery_id>');