title: WordPress, get_categories, taxonomy
body: <p>I have a very simple question that is not answered on WordPress Codex.</p>
  
  <p>The get_categories() function get an option for taxonomies. What I like to ask is, can I pass more than one taxonomies like that:</p>
  
  <pre><code>get_categories(
      array(
          'taxonomies' =&gt; 'category,my_custom_taxonomy'
      )
  );
  </code></pre>