apply_filters( 'pre_wp_update_comment_count_now', int|null $new, int $old, int $post_id )
Filters a post’s comment count before it is updated in the database.
Parameters
- $new
-  (int|null) The new comment count. Default null. 
- $old
-  (int) The old comment count. 
- $post_id
-  (int) Post ID. 
Source
File: wp-includes/comment.php
Changelog
| Version | Description | 
|---|---|
| 4.5.0 | Introduced. | 
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Licensed under the GNU GPLv2+ License.
    https://developer.wordpress.org/reference/hooks/pre_wp_update_comment_count_now