1. Go to this page and download the library: Download soleniye/yoomoney-sdk-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/ */
soleniye / yoomoney-sdk-php example snippets
use \YooMoney\API;
$auth_url = API::buildObtainTokenUrl($client_id, $redirect_uri, $scope);