_prime_network_caches() │ WP 4.6.0

Adds any networks from the given IDs to the cache that do not already exist in cache.

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

No Hooks.

Returns

null. Nothing (null).

Usage

_prime_network_caches( $network_ids );

$network_ids(array) (required): Array of network IDs.

Notes

See: update_network_cache()
Global. wpdb. $wpdb WordPress database abstraction object.

Changelog

Since 4.6.0	Introduced.
Since 6.1.0	This function is no longer marked as "private".

`_prime_network_caches() prime network caches` code ^{WP 6.9.1}

wp-includes/ms-network.php

function _prime_network_caches( $network_ids ) {
	global $wpdb;

	$non_cached_ids = _get_non_cached_ids( $network_ids, 'networks' );
	if ( ! empty( $non_cached_ids ) ) {
		$fresh_networks = $wpdb->get_results( sprintf( "SELECT $wpdb->site.* FROM $wpdb->site WHERE id IN (%s)", implode( ',', array_map( 'intval', $non_cached_ids ) ) ) ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared

		update_network_cache( $fresh_networks );
	}
}