<?php
/** DomFramework
    @package domframework
    @author Dominique Fournier <dominique@fournier38.fr> */

require_once ("output.php");
/** Display in XML the data provided */
class outputxml extends output
{
  /** Display in XML the data provided
      @param mixed $data The data to be displayed */
  public function out ($data)
  {
    @header("Cache-Control: no-store, no-cache, must-revalidate");
    @header("Expires: Sat, 26 Jul 1997 05:00:00 GMT");
    @header('Last-Modified: '.gmdate ('D, d M Y H:i:s').' GMT');
    @header('Cache-Control: post-check=0, pre-check=0', false);
    @header('Pragma: no-cache');
    @header ("Content-Type: text/xml");
    $xml = new SimpleXMLElement ("<?xml version=\"1.0\"?><root></root>");
    // function call to convert array to xml
    if (!is_array ($data))
      $data = array ($data);
    $this->array_to_xml ($data, $xml);
    //saving generated xml file
    print $xml->asXML();
    if (!defined ("PHPUNIT"))
      exit;
  }

  /** function defination to convert array to xml
      @param mixed $data The data to be converted
      @param string &$xml The actual state of the XML file */
  private function array_to_xml ($data, &$xml)
  {
    foreach($data as $key => $value)
    {
      if(is_array($value))
      {
        $key = is_numeric($key) ? "item$key" : $key;
        $subnode = $xml->addChild("$key");
        $this->array_to_xml($value, $subnode);
      }
      else
      {
        $key = is_numeric($key) ? "item$key" : $key;
        $xml->addChild("$key","$value");
      }
    }
  }
}