NeatlineTimeFunctions.php

<?php

function timeline($fieldname, $options = array(), $timeline = null)
{
  $timeline = $timeline || get_current_timeline();

  try {
    $text = strtolower($timeline->$fieldname);
  } catch (Exception $e) {
    '"' . $fieldName . '"" does not exist for timelines!';
  }

  if(isset($options['snippet'])) {
    $text = snippet($text, 0, (int)$options['snippet']);
  }

  if($fieldname === "url") {
    $text = abs_timeline_uri($text);
  }

  return $text;

}