1. Go to this page and download the library: Download selyakovadim/paykassa 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/ */
selyakovadim / paykassa example snippets
$api = new Paykassa\PaykassaApi($api_id, $api_key);
$sci = new Paykassa\PaykassaSci($sci_id, $sci_key);
$api = new Paykassa\PaykassaApi();
$sci = new Paykassa\PaykassaSci();