February 12, 2011 
Definition:
function get_site_option( $option, $default = false, $use_cache = true ) {}
Retrieve site option value based on name of option.
Parameters
- string $option: Name of option to retrieve. Expected to not be SQL-escaped.
- mixed $default: Optional value to return if option doesn’t exist. Default false.
- bool $use_cache: Whether to use cache. Multisite only. Default true.
Return values
returns:Value set for the option.
Defined filters
- pre_site_option_$option
apply_filters( 'pre_site_option_' . $option, false )
Source code
function get_site_option( $option, $default = false, $use_cache = true ) {
global $wpdb;
// Allow plugins to short-circuit site options.
$pre = apply_filters( 'pre_site_option_' . $option, false );
if ( false !== $pre )
return $pre;
if ( !is_multisite() ) {
$value = get_option($option, $default);
} else {
$cache_key = "{$wpdb->siteid}:$option";
if ( $use_cache )
$value = wp_cache_get($cache_key, 'site-options');
if ( !isset($value) || (false === $value) ) {
$row = $wpdb->get_row( $wpdb->prepare("SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) );
// Has to be get_row instead of get_var because of funkiness with 0, false, null values
if ( is_object( $row ) ) {
$value = $row->meta_value;
$value = maybe_unserialize( $value );
wp_cache_set( $cache_key, $value, 'site-options' );
} else {
$value = $default;
}
}
}
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