`<?php echo get_the_category_list(); ?>` not give me all my categories

Question

<?php echo get_the_category_list(); ?> not give me all my categories.

I use <?php echo get_the_category_list(); ?> in my footer.php file to display my categories but in home page show only two categories and in inner single posts show post's related category and in pages show nothing. even I use <?php wp_reset_query(); ?> after each WP_Query

please help me

Answer 1

You can use

<ul>
<?php wp_list_categories('exclude=22&title_li='); ?>
</ul>