1. Go to this page and download the library: Download onesky/api-library-php5 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/ */
// resource => name of resource in camelcase with 's' tailing such as 'projectTypes', 'quotations', 'importTasks'
// action => action to take such as 'list', 'show', 'upload', 'export'
// parameters => parameters passed in the request including URL param such as 'project_id', 'files', 'locale'
$client->{resource}('{action}', array({parameters}));