title: Wordpress - Display child pages of the parent page on said child pages
body: <p>I have the following hierarchical order:</p>
  
  <pre><code>Parent Page
       Child Page 1
       Child Page 2
       Child Page 3
  </code></pre>
  
  <p>I use the following PHP snippet to show all child pages on the parent page in a side navigation:</p>
  
  <pre><code>wp_list_pages('title_li=&amp;child_of='.$post-&gt;ID.'&amp;echo=1');
  </code></pre>
  
  <p><strong>Now to my question:</strong></p>
  
  <p>How can I modify the snippet that it also displays the side navigation on the child pages? Somehow: 'Go to your parent page, collect all child pages and display it where you are, on a child page'.</p>
  
  <p>Thanks for reading!</p>