wp_load_core_site_options

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

Description

wp_load_core_site_options( (null) $site_id = null );

Parameters (1)

0. $site_id — Optional. (null) => null: Site ID for which to query the options. Defaults to the current site.

Usage

if ( !function_exists( 'wp_load_core_site_options' ) ) { 
    require_once ABSPATH . WPINC . '/option.php'; 
} 
  
// Optional site ID for which to query the options. Defaults to the current site. 
$site_id = null; 
  
// NOTICE! Understand what this does before running. 
$result = wp_load_core_site_options($site_id);

Defined (1)

The function is defined in the following location(s).

/wp-includes/option.php

function wp_load_core_site_options( $site_id = null ) { 
    global $wpdb; 
 
    if ( ! is_multisite() || wp_using_ext_object_cache() || wp_installing() ) 
        return; 
 
    if ( empty($site_id) ) 
        $site_id = $wpdb->siteid; 
 
    $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", $site_id) ); 
 
    foreach ( $options as $option ) { 
        $key = $option->meta_key; 
        $cache_key = "{$site_id}:$key"; 
        $option->meta_value = maybe_unserialize( $option->meta_value ); 
 
        wp_cache_set( $cache_key, $option->meta_value, 'site-options' ); 
    } 
}