Yoast Breadcrumb with Twitter Bootstrap Markup

yoast-bootstrap-breadcrumb.php

<?php
/**
 * Yoast Breadcrumbs on Twitter Bootstrap
 * 
 * @author Novrian <me@novrian.info>
 * @copyright (c) 2013. Novrian Y.F.
 * @license MIT License
 * @param string $sep Your custom separator
 */
function novrian_breadcrumbs($sep = '/') {
  if (!function_exists('yoast_breadcrumb')) {
    return null;
  }

  // Default Yoast Breadcrumbs Separator
  $old_sep = '\&raquo\;';

  // Get the crumbs
  $crumbs = yoast_breadcrumb(null, null, false);

  // Hilangkan wrapper <span xmlns:v />
  $output = preg_replace("/^\<span xmlns\:v=\"http\:\/\/rdf\.data\-vocabulary\.org\/#\"\>/", "", $crumbs);
  $output = preg_replace("/\<\/span\>$/", "", $output);

  // Ambil Crumbs
  $crumb = preg_split("/\40(" . $old_sep . ")\40/", $output);

  // Manipulasi string output tiap crumbs
  $crumb = array_map(
    create_function('$crumb', '
      if (preg_match(\'/\<span\40class=\"breadcrumb_last\"/\', $crumb)) {
        return \'<li class="active">\' . $crumb . \'</li>\';
      }
      return \'<li>\' . $crumb . \' <span class="divider">' . $sep . '</span></li>\';
      '),
    $crumb
    );

  // Bangun output HTML
  $output = '<div class="breadcrumbs-container" xmlns:v="http://rdf.data-vocabulary.org/#"\><ul class="breadcrumb">' . implode("", $crumb) . '</ul></div>';

  // Print
  echo $output;
}

This doesn't provide a valid HTML output, and puts everything underneath a single span. How does this use the Bootstrap format at all? http://getbootstrap.com/components/#breadcrumbs

This is bad. all it does is wrap the breadcrumbs in a single list item. which you can do without any plugin.