Searching a hook which triggers when deleting a post to get all comments

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When deleting a post, all comments associated with this post get the status “post-trashed”. I’m searching a hook for this event.

Tried these one without success:
comment_approved_to_post-trashed
comment_approved_to_trash

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2 comments

  1. There are few other hooks to manipulated the trashed comment.

    1. ‘save_post’: called after post is saved. You can check status of the post and manipulate its comment accordingly.
    2. ‘trashed_comment’: called after comment is moved to trash status.
    3. ‘transition_comment_status’: called whenever comment status is changed.

    There are probably few others too. But, it depends what you want to do with the trashed comments.

  2. Sadly your hook didn’t trigger when deleting a post. But I just looked into the wordpress code and found the right hook:

    * @uses do_action() on 'trashed_post_comments' after trashing

    in the function

    wp_trash_post_comments()

    And then just add the action like that:

    add_action('trashed_post_comments', 'sp_trashed_post_comments', 10, 2);
...
function sp_trashed_post_comments($postID, $statuses) {
    $commentIDs = array_keys($statuses);
    print_r($commentIDs); // echoes all commentIDs associated with the deleted post
}