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wp_load_core_site_options( int $network_id = null )

Loads and caches certain often requested site options if is_multisite() and a persistent cache is not being used.

Parameters

$network_id

(int) (Optional) site ID for which to query the options. Defaults to the current site.

Default value: null

Source

File: wp-includes/option.php 

function wp_load_core_site_options( $network_id = null ) {
	global $wpdb;

	if ( ! is_multisite() || wp_using_ext_object_cache() || wp_installing() ) {
		return;
	}

	if ( empty( $network_id ) ) {
		$network_id = get_current_network_id();
	}

	$core_options = array( 'site_name', 'siteurl', 'active_sitewide_plugins', '_site_transient_timeout_theme_roots', '_site_transient_theme_roots', 'site_admins', 'can_compress_scripts', 'global_terms_enabled', 'ms_files_rewriting' );

	$core_options_in = "'" . implode( "', '", $core_options ) . "'";
	$options         = $wpdb->get_results( $wpdb->prepare( "SELECT meta_key, meta_value FROM $wpdb->sitemeta WHERE meta_key IN ($core_options_in) AND site_id = %d", $network_id ) );

	foreach ( $options as $option ) {
		$key                = $option->meta_key;
		$cache_key          = "{$network_id}:$key";
		$option->meta_value = maybe_unserialize( $option->meta_value );

		wp_cache_set( $cache_key, $option->meta_value, 'site-options' );
	}
}

Uses

Uses Description
wp-includes/load.php: get_current_network_id()

Retrieves the current network ID.
wp-includes/load.php: wp_installing()

Check or set whether WordPress is in “installation” mode.
wp-includes/cache.php: wp_cache_set()

Saves the data to the cache.
wp-includes/load.php: is_multisite()

If Multisite is enabled.
wp-includes/load.php: wp_using_ext_object_cache()

Toggle $_wp_using_ext_object_cache on and off without directly touching global.
wp-includes/functions.php: maybe_unserialize()

Unserialize data only if it was serialized.
wp-includes/wp-db.php: wpdb::get_results()

Retrieves an entire SQL result set from the database (i.e., many rows).
wp-includes/wp-db.php: wpdb::prepare()

Prepares a SQL query for safe execution.

Changelog

Version Description
3.0.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/wp_load_core_site_options