Установить библиотеку можно с помощью composer:
composer require flowwow/revolut-merchant-php
If you want to get a production
client:
use Flowwow\RevolutMerchant\Client;
$client = new Client($accessToken);
If you want to get a sandbox
client:
use Flowwow\RevolutMerchant\Client;
$client = new Client($accessToken, true);
MIT