is_site_meta_supported(): bool

6520function is_site_meta_supported() {6521	global $wpdb;6522 6523	if ( ! is_multisite() ) {6524		return false;6525	}6526 6527	$network_id = get_main_network_id();6528 6529	$supported = get_network_option( $network_id, 'site_meta_supported', false );6530	if ( false === $supported ) {6531		$supported = $wpdb->get_var( "SHOW TABLES LIKE '{$wpdb->blogmeta}'" ) ? 1 : 0;6532 6533		update_network_option( $network_id, 'site_meta_supported', $supported );6534	}6535 6536	return (bool) $supported;6537}