Sets the site to operate on. Defaults to the current site.

$site_id int Optional

Site ID to initialize roles for. Default is the current site.

Default: null

File: wp-includes/class-wp-roles.php. View all references

public function for_site( $site_id = null ) {
	global $wpdb;

	if ( ! empty( $site_id ) ) {
		$this->site_id = absint( $site_id );
	} else {
		$this->site_id = get_current_blog_id();
	}

	$this->role_key = $wpdb->get_blog_prefix( $this->site_id ) . 'user_roles';

	if ( ! empty( $this->roles ) && ! $this->use_db ) {
		return;
	}

	$this->roles = $this->get_roles_data();

	$this->init_roles();
}