Display total number of Comments
<?php comments_number('zero', 'one', 'more', 'number'); ?>
Added to WordPress by Andy Lobban
Display the name of the category or categories a post belongs to in RSS format
<?php the_category_rss() ?>
Added to WordPress by Andy Lobban
Single Category Title
<?php single_cat_title('prefix', 'display'); ?>
Added to WordPress by Andy Lobban
Dropdown list of Categories (no Submit button)
<?php wp_dropdown_categories(); ?>
Added to WordPress by Andy Lobban
Returns true if the current post is in the specified Category
<?php if ( in_category('category_id') ): ?>
// Some category specific PHP/HTML here
<?php endif; ?>
Added to WordPress by Andy Lobban
Returns a list of the parents of a category, including the category, sorted by ID
<?php echo(get_category_parents()); ?>
Added to WordPress by Andy Lobban