luos/workflow/engine/methods/services/Rest/XmlMessage.php

<?php
/**
 * Class defined to be instanced and handle XML format messages.
 *
 *
 * @category Zend
 * @package ProcessMaker
 * @subpackage workflow
 * @copyright Copyright (c) ProcessMaker Colosa Inc.
 * @version Release: @2.0.44@
 * @since Class available since Release 2.0.44
 */

require_once ("FormatedMessage.php");

/**
 * Class defined to be instanced and handle XML format messages.
 */
class XmlMessage extends FormatedMessage
{

    /**
     * Call the parent Curl initialization and set the type of the message
     */
    public function __construct()
    {
        parent::__construct();
        $this->type = "xml";
    }

    /**
     * Format the array parameter to a xml valid format.
     * TODO: Need to find out a better way to do it.
     */
    protected function format (array $message)
    {
        if (empty( $message )) {
            return;
        }
        if (is_array( $message )) {
            $xml = "<?xml version='1.0'?><request>";
            foreach ($message as $index => $data) {
                $xml .= "<" . $index . ">" . $data . "</" . $index . ">";
            }
            $xml .= "</request>";
        }
        return $xml;
    }
}