count_user_posts( int $userid, array|string $post_type = 'post', bool $public_only = false ): string

616function count_user_posts( $userid, $post_type = 'post', $public_only = false ) {617	global $wpdb;618 619	$post_type = array_unique( (array) $post_type );620	sort( $post_type );621 622	$where = get_posts_by_author_sql( $post_type, true, $userid, $public_only );623	$query = "SELECT COUNT(*) FROM $wpdb->posts $where";624 625	$last_changed = wp_cache_get_last_changed( 'posts' );626	$cache_key    = 'count_user_posts:' . md5( $query ) . ':' . $last_changed;627	$count        = wp_cache_get( $cache_key, 'post-queries' );628	if ( false === $count ) {629		$count = $wpdb->get_var( $query );630		wp_cache_set( $cache_key, $count, 'post-queries' );631	}632 633	/**634	 * Filters the number of posts a user has written.635	 *636	 * @since 2.7.0637	 * @since 4.1.0 Added `$post_type` argument.638	 * @since 4.3.1 Added `$public_only` argument.639	 *640	 * @param int          $count       The user's post count.641	 * @param int          $userid      User ID.642	 * @param string|array $post_type   Single post type or array of post types to count the number of posts for.643	 * @param bool         $public_only Whether to limit counted posts to public posts.644	 */645	return apply_filters( 'get_usernumposts', $count, $userid, $post_type, $public_only );646}