1. Go to this page and download the library: Download npservices/nps-soap 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/ */
npservices / nps-soap example snippets
use NPServices\NpsSoapPackage\NPS;
$nps = new NPS("url_wsdl","votre_identifiant", "votre_mot_de_passe");