wp-includes/class-wp-network-query.php:189Gets a list of networks matching the query vars.
array|int3 hooks fire while WP_Network_Query::get_networks() runs, in this order:
Filters the network data before the query takes place.
public function get_networks() { $this->parse_query(); /** * Fires before networks are retrieved. * * @since 4.6.0 * * @param WP_Network_Query $query Current instance of WP_Network_Query (passed by reference). */ do_action_ref_array( 'pre_get_networks', array( &$this ) ); $network_data = null; /** * Filters the network data before the query takes place. * * Return a non-null value to bypass WordPress' default network queries. * * The expected return type from this filter depends on the value passed * in the request query vars: * - When `$this->query_vars['count']` is set, the filter should return * the network count as an integer. * - When `'ids' === $this->query_vars['fields']`, the filter should return * an array of network IDs. * - Otherwise the filter should return an array of WP_Network objects. * * Note that if the filter returns an array of network data, it will be assigned * to the `networks` property of the current WP_Network_Query instance. * * Filtering functions that require pagination information are encouraged to set * the `found_networks` and `max_num_pages` properties of the WP_Network_Query object, * passed to the filter by reference. If WP_Network_Query does not perform a database * query, it will not have enough information to generate these values itself. * * @since 5.2.0 * @since 5.6.0 The returned array of network data is assigned to the `networks` property * of the current WP_Network_Query instance. * * @param array|int|null $network_data Return an array of network data to short-circuit WP's network query, * the network count as an integer if `$this->query_vars['count']` is set, * or null to allow WP to run its normal queries. * @param WP_Network_Query $query The WP_Network_Query instance, passed by reference. */ $network_data = apply_filters_ref_array( 'networks_pre_query', array( $network_data, &$this ) ); if ( null !== $network_data ) { if ( is_array( $network_data ) && ! $this->query_vars['count'] ) { $this->networks = $network_data; } return $network_data; } // $args can include anything. Only use the args defined in the query_var_defaults to compute the key. $_args = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) ); // Ignore the $fields, $update_network_cache arguments as the queried result will be the same regardless. unset( $_args['fields'], $_args['update_network_cache'] ); $key = md5( serialize( $_args ) ); $last_changed = wp_cache_get_last_changed( 'networks' ); $cache_key = "get_network_ids:$key:$last_changed"; $cache_value = wp_cache_get( $cache_key, 'network-queries' ); 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, 'network-queries' ); } else { $network_ids = $cache_value['network_ids']; $this->found_networks = $cache_value['found_networks'];Introduced in 4.6.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-network-query.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.