Hide empty categories from get_categories

Question

I'm trying to hide the empty categories (with no posts associated) from a list in an archive page. I'm using hide_empty as suggested on Wordpress codex but it's not working, the code outputs all categories:

<ul class="filter-menu">
  <?php $cat = get_query_var('cat');
    foreach(get_categories('parent=0&hide_empty=1') as $category) {
      echo '<li><a href="#" data-filter=".'. $category->slug.'" >' . $category->name.'</a></li>';
    }
  ?>
</ul>

Any idea what I'm doing wrong or how could I modify the code to make it work?

Answer 1

Try this hide_empty=1 it should be hide_empty=0