February 11, 2011 
Definition:
function add_site_option( $option, $value ) {}
Add a new site option.
Existing options will not be updated. Note that prior to 3.3 this wasn’t the case.
Parameters
- string $option: Name of option to add. Expected to not be SQL-escaped.
- mixed $value: Optional. Option value, can be anything. Expected to not be SQL-escaped.
Return values
returns:False if option was not added and true if option was added.
Defined filters
- pre_add_site_option_$option
apply_filters( 'pre_add_site_option_' . $option, $value )
Source code
function add_site_option( $option, $value ) {
global $wpdb;
$value = apply_filters( 'pre_add_site_option_' . $option, $value );
if ( !is_multisite() ) {
$result = add_option( $option, $value );
} else {
$cache_key = "{$wpdb->siteid}:$option";
if ( false !== get_site_option( $option ) )
return false;
$value = sanitize_option( $option, $value );
wp_cache_set( $cache_key, $value, 'site-options' );
$_value = $value;
$value = maybe_serialize( $value );
$result = $wpdb->insert( $wpdb->sitemeta, array('site_id' => $wpdb->siteid, 'meta_key' => $option, 'meta_value' => $value ) );
$value = $_value;
}
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