WP_Network::get_instance() WordPress Method

	public static function get_instance( $network_id ) {
		global $wpdb;

		$network_id = (int) $network_id;
		if ( ! $network_id ) {
			return false;
		}

		$_network = wp_cache_get( $network_id, 'networks' );

		if ( false === $_network ) {
			$_network = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->site} WHERE id = %d LIMIT 1", $network_id ) );

			if ( empty( $_network ) || is_wp_error( $_network ) ) {
				$_network = -1;
			}

			wp_cache_add( $network_id, $_network, 'networks' );
		}

		if ( is_numeric( $_network ) ) {
			return false;
		}

		return new WP_Network( $_network );
	}
Uses	Description
wp-includes/class-wp-network.php:WP_Network::__construct()	Create a new WP_Network object.
wp-includes/cache.php:wp_cache_get()	Retrieves the cache contents from the cache by key and group.
wp-includes/cache.php:wp_cache_add()	Adds data to the cache, if the cache key doesn’t already exist.
wp-includes/wp-db.php:wpdb::get_row()	Retrieves one row from the database.
wp-includes/wp-db.php:wpdb::prepare()	Prepares a SQL query for safe execution.
wp-includes/load.php:is_wp_error()	Checks whether the given variable is a WordPress Error.
Used By	Description
wp-includes/ms-network.php:get_network()	Retrieves network data given a network ID or network object.
wp-includes/ms-load.php:ms_load_current_site_and_network()	Identifies the network and site of a requested domain and path and populates the corresponding network and site global objects as part of the multisite bootstrap process.