grant_super_admin( int $user_id ): bool

1215function grant_super_admin( $user_id ) {1216	// If global super_admins override is defined, there is nothing to do here.1217	if ( isset( $GLOBALS['super_admins'] ) || ! is_multisite() ) {1218		return false;1219	}1220 1221	/**1222	 * Fires before the user is granted Super Admin privileges.1223	 *1224	 * @since 3.0.01225	 *1226	 * @param int $user_id ID of the user that is about to be granted Super Admin privileges.1227	 */1228	do_action( 'grant_super_admin', $user_id );1229 1230	// Directly fetch site_admins instead of using get_super_admins().1231	$super_admins = get_site_option( 'site_admins', array( 'admin' ) );1232 1233	$user = get_userdata( $user_id );1234	if ( $user && ! in_array( $user->user_login, $super_admins, true ) ) {1235		$super_admins[] = $user->user_login;1236		update_site_option( 'site_admins', $super_admins );1237 1238		/**1239		 * Fires after the user is granted Super Admin privileges.1240		 *1241		 * @since 3.0.01242		 *1243		 * @param int $user_id ID of the user that was granted Super Admin privileges.1244		 */1245		do_action( 'granted_super_admin', $user_id );1246		return true;1247	}1248	return false;1249}