Alert: This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness. Use update_site_cache() instead.

_prime_site_caches( array $ids, bool $update_meta_cache = true )

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


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See also

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(array) (Required) ID list.


(bool) (Optional) Whether to update the meta cache.

Default value: true

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File: wp-includes/ms-site.php

function _prime_site_caches( $ids, $update_meta_cache = true ) {
	global $wpdb;

	$non_cached_ids = _get_non_cached_ids( $ids, 'sites' );
	if ( ! empty( $non_cached_ids ) ) {
		$fresh_sites = $wpdb->get_results( sprintf( "SELECT * FROM $wpdb->blogs WHERE blog_id IN (%s)", implode( ',', array_map( 'intval', $non_cached_ids ) ) ) ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared

		update_site_cache( $fresh_sites, $update_meta_cache );

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Version Description
5.1.0 Introduced the $update_meta_cache parameter.
4.6.0 Introduced.

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