gistfile1.php

<?php

  /**
   * reorders an array based on the specified order of keys.
   *
   * @param array $array  the array that should be reordered
   * @param array $order  the order that the keys in the first array should be in. each value should be a key from the first array. any elements from the first array that are not specified in the order will be inserted at the end of the returned array, in their original order.
   *
   * @return array
   */
  function reorder(array $array, array $order)
  {
    $new_array = array();

    // add elements to the new array in the correct order
    foreach ($order as $key)
    {
      // skip any keys that were not in the array
      if (isset($array[$key]))
      {
        $new_array[$key] = $array[$key];
      }
    }

    // add any remaining elements that were not specified in the order
    foreach ($array as $key => $val)
    {
      if (!isset($new_array[$key]))
      {
        $new_array[$key] = $val;
      }
    }

    return $new_array;
  }