staylor / WordPress

	 *

	 * @return int|array The list of networks.

	 */

	public function get_networks() {

		$this->parse_query();

		/**

		 * Fires before networks are retrieved.

		 *

		 * @since 4.6.0

		 *

		 * @param WP_Network_Query &$this Current instance of WP_Network_Query, passed by reference.

		 */

		do_action_ref_array( 'pre_get_networks', array( &$this ) );

		// $args can include anything. Only use the args defined in the query_var_defaults to compute the key.

		$key = md5( serialize( wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) ) ) );

		$last_changed = wp_cache_get( 'last_changed', 'networks' );

		if ( ! $last_changed ) {

			$last_changed = microtime();

			wp_cache_set( 'last_changed', $last_changed, 'networks' );

		}

		$cache_key = "get_network_ids:$key:$last_changed";

		$cache_value = wp_cache_get( $cache_key, 'networks' );

		if ( false === $cache_value ) {

			$network_ids = $this->get_network_ids();

			if ( $network_ids ) {

				$this->set_found_networks();

			}

			$cache_value = array(

				'network_ids' => $network_ids,

				'found_networks' => $this->found_networks,

			);

			wp_cache_add( $cache_key, $cache_value, 'networks' );

		} else {

			$network_ids = $cache_value['network_ids'];

			$this->found_networks = $cache_value['found_networks'];

		}

		if ( $this->found_networks && $this->query_vars['number'] ) {

			$this->max_num_pages = ceil( $this->found_networks / $this->query_vars['number'] );

		}

		// If querying for a count only, there's nothing more to do.

		if ( $this->query_vars['count'] ) {

			// $network_ids is actually a count in this case.

			return intval( $network_ids );

		}

		$network_ids = array_map( 'intval', $network_ids );

		if ( 'ids' == $this->query_vars['fields'] ) {

			$this->networks = $network_ids;

			return $this->networks;

		}

		if ( $this->query_vars['update_network_cache'] ) {

			_prime_network_caches( $network_ids );

		}

		// Fetch full network objects from the primed cache.

		$_networks = array();

		foreach ( $network_ids as $network_id ) {

			if ( $_network = get_network( $network_id ) ) {

				$_networks[] = $_network;

			}

		}

		/**

		 * Filters the network query results.

		 *

		 * @since 4.6.0

		 *

		 * @param array            $results  An array of networks.

		 * @param WP_Network_Query &$this    Current instance of WP_Network_Query, passed by reference.

		 */

		$_networks = apply_filters_ref_array( 'the_networks', array( $_networks, &$this ) );

		// Convert to WP_Network instances

		$this->networks = array_map( 'get_network', $_networks );

		return $this->networks;

	}

	/**

	 * Used internally to get a list of network IDs matching the query vars.

	 *

	 * @return array|int List of sites, or number of sites when 'count' is passed as a query var.

	 */

	public function get_sites() {

		$this->parse_query();

		/**

		 * Fires before sites are retrieved.

		 *

		 * @since 4.6.0

		 *

		 * @param WP_Site_Query &$this Current instance of WP_Site_Query, passed by reference.

		 */

		do_action_ref_array( 'pre_get_sites', array( &$this ) );

		// $args can include anything. Only use the args defined in the query_var_defaults to compute the key.

		$key = md5( serialize( wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) ) ) );

		$last_changed = wp_cache_get( 'last_changed', 'sites' );

		if ( ! $last_changed ) {

			$last_changed = microtime();

			wp_cache_set( 'last_changed', $last_changed, 'sites' );

		}

		$cache_key = "get_sites:$key:$last_changed";

		$cache_value = wp_cache_get( $cache_key, 'sites' );

		if ( false === $cache_value ) {

			$site_ids = $this->get_site_ids();

			if ( $site_ids ) {

				$this->set_found_sites();

			}

			$cache_value = array(

				'site_ids' => $site_ids,

				'found_sites' => $this->found_sites,

			);

			wp_cache_add( $cache_key, $cache_value, 'sites' );

		} else {

			$site_ids = $cache_value['site_ids'];

			$this->found_sites = $cache_value['found_sites'];

		}

		if ( $this->found_sites && $this->query_vars['number'] ) {

			$this->max_num_pages = ceil( $this->found_sites / $this->query_vars['number'] );

		}

		// If querying for a count only, there's nothing more to do.

		if ( $this->query_vars['count'] ) {

			// $site_ids is actually a count in this case.

			return intval( $site_ids );

		}

		$site_ids = array_map( 'intval', $site_ids );

		if ( 'ids' == $this->query_vars['fields'] ) {

			$this->sites = $site_ids;

			return $this->sites;

		}

		// Prime site network caches.

		if ( $this->query_vars['update_site_cache'] ) {

			_prime_site_caches( $site_ids );

		}

		// Fetch full site objects from the primed cache.

		$_sites = array();

		foreach ( $site_ids as $site_id ) {

			if ( $_site = get_site( $site_id ) ) {

				$_sites[] = $_site;

			}

		}

		/**

		 * Filters the site query results.

		 *

		 * @since 4.6.0

		 *

		 * @param array         $results An array of sites.

		 * @param WP_Site_Query &$this   Current instance of WP_Site_Query, passed by reference.

		 */

		$_sites = apply_filters_ref_array( 'the_sites', array( $_sites, &$this ) );

		// Convert to WP_Site instances.

		$this->sites = array_map( 'get_site', $_sites );

		return $this->sites;

	}

	/**

	 * Used internally to get a list of site IDs matching the query vars.