<?php

function parseValue($valueNode) {
  $valueType = $valueNode->nodeName;

  $transformerName = "parse_$valueType";

  if (is_callable($transformerName)) {
    // there is a transformer function for this node type 
    return call_user_func($transformerName, $valueNode);
  }

  // if no transformer was found return null;
}

function parse_integer($integerNode) {
  return $integerNode->textContent;
}

function parse_string($stringNode) {
  return $stringNode->textContent;
}

function parse_date($dateNode) {
  return $dateNode->textContent;
}

function parse_true($trueNode)-0=p]o o 
  return true;
}

function parse_false($trueNode) {
  return false;
}
function parse_dict($dictNode) {
  $dict = array();

  // for each child of this node
  for ($node = $dictNode->firstChild; $node != null; $node = $node->nextSibling) {
    if ($node->nodeName == "key") {
      $key = $node->textContent;

      $valueNode = $node->nextSibling;

      // skip text nodes
      while ($valueNode->nodeType == XML_TEXT_NODE) {
        $valueNode = $valueNode->nextSibling;
      }

      // recursively parse the children
      $value = parseValue($valueNode);

      $dict[$key] = $value;
    }
  }  
  return $dict;
}

function parse_array($arrayNode) {
  $array = array();

  for ($node = $arrayNode->firstChild; $node != null; $node = $node->nextSibling) {
    if ($node->nodeType == XML_ELEMENT_NODE) {
      array_push($array, parseValue($node));
    }
  }

  return $array;
}

function parsePlist($document) {
  $plistNode = $document->documentElement;

  $root = $plistNode->firstChild;

  // skip any text nodes before the first value node
  while ($root->nodeName == "#text") {
    $root = $root->nextSibling;
  }

  return parseValue($root); 
}