private function _process()
 {
     $cmd = new clsPayPalDonationHandler();
     $cmd->setData($this->_data);
     $cmd->preview();
     return $cmd->getDonationId();
 }
<?php

/**
 * Form Handler
 *
 * @author      Sam Plugins <*****@*****.**>
 * @copyright   Sam Plugins <*****@*****.**>
 * @twitter     http://twitter.com/samplugins
 */
require_once "include/init.php";
$cmd = new clsPayPalDonationHandler();
$data = array();
$data['item_name'] = Settings::Get('donation_statement_title');
$data['currency_code'] = DonationConfig::Get('currency');
$cmd->setData($data)->donate();