Super Easy Wordpress Breadcrumbs

function-breadcrumbs.php

/**
 * Super Easy Breadcrumbs
 * 
 * Creates an unordered list for ancestor links.
 *
 * @example <?php easy_breadcrumbs(); ?>
 * @author Scott Nelle
 * @package den_framework
 * @subpackage den_custom_hooks
**/

	function den_breadcrumbs() {
		global $post;
	    $parent_id = $post->post_parent;
	    // if ($parent_id == 0) { return false; }
	    // else {
	        $output = '';
	        while ($parent_id != 0) {
	            $ancestor = get_post($parent_id);
	            $output = '<li><a href="'.get_permalink($ancestor->ID).'">'.$ancestor->post_title.'</a></li>' . $output;

	            $parent_id = $ancestor->post_parent;

	        }
	        echo '<ol class="breadcrumb"><li><a href="'.home_url().'">Home</a></li>' .$output.'<li class="active">' . $post->post_title . '</li></ol>';
	    // }
	}