wp_count_comments()

wp_count_comments() — Retrieves the total comment counts for the whole site or a single post. The comment stats are cached and then retrieved, if they already exist in the cache.

Inputs: $post_id (int): Optional. Restrict the comment counts to the given post. Default 0, which indicates that comment counts for the whole site will be retrieved.

Returns stdClass: The number of comments keyed by their status. Field $approved (int): The number of approved comments. Field $moderated (int): The number of comments awaiting moderation (a.k.a. pending). Field $spam (int): The number of spam comments. Field $trash (int): The number of trashed comments. Field $post-trashed (int): The number of comments for posts that are in the trash. Field $total_comments (int): The total number of non-trashed comments, including spam. Field $all (int): The total number of pending or approved comments.