Code for creating Wordpress breadcrumbs in a theme

wordpress-breadcrumbs.php

<?php
/* explanation of code here: http://www.suburban-glory.com/blog?page=170 */

function my_breadcrumb($id = null) {

    echo '<a href="';
    echo get_option('home');
    echo '">';
    echo 'Home';
    echo "</a> &gt; ";

    if (is_category() || is_single()) {

        if (is_single()) {
            the_title();
        }

        if(is_category()) {

            $category = get_category(get_query_var('cat'));
            $cat_id = $category->cat_ID;
            $cat = get_category_parents($cat_id, TRUE, ' &gt; ');
            // remove last &gt;
            echo preg_replace('/&gt;\s$/', '', $cat);

        }

    } elseif (is_page()) {

        if ($id != null) {

            $parent = get_the_title($id);
            $parent = '<a href="' . get_permalink($id) . '">' . $parent . '</a>';
            echo !is_null($parent) ? $parent . "&gt; " : null;

        }

        echo the_title();

    }

}

?>


<div id="breadcrumb">

    <?php if (!is_search() || !is_404()) {

        global $post;

        if ($post != null) {
            my_breadcrumb($post->post_parent);
        } else {
            my_breadcrumb();
        }

    } else {

        print '&nbsp;';

    } ?>
    
</div>