Title: Nested HTML comments
Last modified: August 21, 2016

---

# Nested HTML comments

 *  Resolved [sarahjadesigns](https://wordpress.org/support/users/sarahjadesigns/)
 * (@sarahjadesigns)
 * [12 years, 9 months ago](https://wordpress.org/support/topic/nested-html-comments/)
 * I’ve noticed that on my single post pages I get the trailing end of an HTML comment(`--
   >`) showing up after user comments.
 * When I look at the HTML I see that this is because two comments are being nested:
 *     ```
       <--
       <br />
       <b>Warning</b>:  call_user_func() expects parameter 1 to be a valid callback, function 'my_comments_callback' not found or invalid function name in <b>/home/luckysta/public_html/wp/wp-includes/comment-template.php</b> on line <b>1334</b><br />
       </li><!-- #comment-## -->
       -->
       ```
   
 * Now I’ve researched nested comments a bit and it seems [a bit of trickery](http://stackoverflow.com/questions/442786/are-nested-html-comments-possible)
   can make it work. However, I can’t seem to find where these comment tags are 
   in any PHP file! I’ve done a search in my theme and in WordPress’ core files 
   that seem relevant (I know I shouldn’t edit these, but was hoping I could at 
   least find the tags and figure something out), but I just can’t find it.
 * Does anyone know where this string is and/or another method of fixing this problem?
   If it helps, I’m using a child theme of SimpleX and my site is here: [http://lucky-stars.ca/ptp](http://lucky-stars.ca/ptp)

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [paulwpxp](https://wordpress.org/support/users/paulwp/)
 * (@paulwp)
 * [12 years, 9 months ago](https://wordpress.org/support/topic/nested-html-comments/#post-4039683)
 * It should or might be gone after you fix that warning.
 * Check `comments.php` for callback function name used in `wp_list_comments()`.
 * It should be `simplex_comment`, not `my_comments_callback`. In case of using 
   your own callback, make sure there is that function in your `functions.php`.
 *  Thread Starter [sarahjadesigns](https://wordpress.org/support/users/sarahjadesigns/)
 * (@sarahjadesigns)
 * [12 years, 9 months ago](https://wordpress.org/support/topic/nested-html-comments/#post-4039684)
 * Aha! It was using `simplex_comment`, but `my_comments_callback` was still there
   hidden between comment tags. Removing that comment fixed the problem.
 * Thanks so much, I never would’ve figured it out without you!
 *  [paulwpxp](https://wordpress.org/support/users/paulwp/)
 * (@paulwp)
 * [12 years, 9 months ago](https://wordpress.org/support/topic/nested-html-comments/#post-4039685)
 * Glad to hear it all fixed. This kind of thing happens to all of us sometimes 
   🙂

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Nested HTML comments’ is closed to new replies.

## Tags

 * [HTML Comments](https://wordpress.org/support/topic-tag/html-comments/)

 * 3 replies
 * 2 participants
 * Last reply from: [paulwpxp](https://wordpress.org/support/users/paulwp/)
 * Last activity: [12 years, 9 months ago](https://wordpress.org/support/topic/nested-html-comments/#post-4039685)
 * Status: resolved

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