title: How to use shortcodes inside metaboxes in WordPress?
body: <p>I've created a custom metabox using <a href="http://codex.wordpress.org/Function_Reference/add_meta_box#Examples" rel="nofollow">this example</a>. When the admin-user enters a <a href="http://codex.wordpress.org/Shortcode_API" rel="nofollow">shortcode</a> in my metabox, the shortcode displays on my front-end as plain text such as: </p>
  
  <blockquote>
    <p>[menu]</p>
  </blockquote>
  
  <p>How can I make sure WordPress parses the shortcode so an actual menu is outputted?</p>
  
  <p>I'm using this in my page.php template to display the contents of my custom metabox:</p>
  
  <pre><code>echo get_post_meta( get_the_ID(), '_my_custom_meta_value_key', true );
  </code></pre>