<?php // Include required library files. require_once '../includes/config.php'; require_once '../includes/paypal.class.php'; // Create PayPal object. $PayPalConfig = array('Sandbox' => $sandbox, 'APIUsername' => $api_username, 'APIPassword' => $api_password, 'APISignature' => $api_signature); $PayPal = new PayPal($PayPalConfig); // Prepare request arrays $BOAFields = array('profileid' => '', 'amt' => '', 'note' => ''); $PayPalRequestData = array('BOAFields' => $BOAFields); // Pass data into class for processing with PayPal and load the response array into $PayPalResult $PayPalResult = $PayPal->BillOutstandingAmount($PayPalRequestData); // Write the contents of the response array to the screen for demo purposes. echo '<pre />'; print_r($PayPalResult);