PHP array2xml() - Coverts An Array To XML Structure

/*
 * Function:    array2xml()
 *
 * Description: Array to XML is a function that does just that... converts any given
 *              array to xml structure.
 *
 * Version:     1.0
 *
 * Created by:  Marcus Carver © 2008
 * Email:       info@marcuscarver.com
 * Link:        http://blog.marcuscarver.com/
 *
 * Arguments :  $array      - The array you wish to convert into a XML structure.
 *              $name       - The name you wish to enclose the array in, the 'parent'
 *                            tag for XML.
 *              $standalone - This will add a document header to identify output
 *                            solely as a XML document.
 *              $beginning  - INTERNAL USE... DO NOT USE!
 *
 * Return:      Gives a string output in a XML structure
 *
 * Use:         echo array2xml($products,'products');
 *              die;
*/

function array2xml($array, $name='array', $standalone=TRUE, $beginning=TRUE) {

  global $nested;

  if ($beginning) {
    if ($standalone) header("content-type:text/xml;charset=utf-8");
    $output .= '<'.'?'.'xml version="1.0" encoding="UTF-8"'.'?'.'>' . LF;
    $output .= '<' . $name . '>' . LF;
    $nested = 0;
  }
  
  // This is required because XML standards do not allow a tag to start with a number or symbol, you can change this value to whatever you like:
  $ArrayNumberPrefix = 'ARRAY_NUMBER_';
  
 foreach ($array as $root=>$child) {
    if (is_array($child)) {
      $output .= str_repeat(" ", (2 * $nested)) . '  <' . (is_string($root) ? $root : $ArrayNumberPrefix . $root) . '>' . LF;
      $nested++;
      $output .= array2xml($child,NULL,NULL,FALSE);
      $nested--;
      $output .= str_repeat(" ", (2 * $nested)) . '  ' . LF;
    }
    else {
      $output .= str_repeat(" ", (2 * $nested)) . '  <' . (is_string($root) ? $root : $ArrayNumberPrefix . $root) . '>' . LF;
    }
  }
  
  if ($beginning) $output .= '';
  
  return $output;
}