Show comment count

function post_comment_count() {

    function comment_count( $count ) {
        if ( ! is_admin() ) {
            global $post;
            $comments_by_type = &separate_comments(get_comments('status=approve&post_id='. $post->ID ));
            return count($comments_by_type['comment']);
        }
        else {
            return $count;
        }
    }

    add_filter('get_comments_number', 'comment_count', 0);

    $actual_comment_count = get_comments_number();

    return $actual_comment_count;
}

add_shortcode('post_comment_count', 'post_comment_count');