is_multi_author(): bool

607function is_multi_author() {608	global $wpdb;609 610	$is_multi_author = get_transient( 'is_multi_author' );611	if ( false === $is_multi_author ) {612		$rows            = (array) $wpdb->get_col( "SELECT DISTINCT post_author FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish' LIMIT 2" );613		$is_multi_author = 1 < count( $rows ) ? 1 : 0;614		set_transient( 'is_multi_author', $is_multi_author );615	}616 617	/**618	 * Filters whether the site has more than one author with published posts.619	 *620	 * @since 3.2.0621	 *622	 * @param bool $is_multi_author Whether $is_multi_author should evaluate as true.623	 */624	return apply_filters( 'is_multi_author', (bool) $is_multi_author );625}