update_user_caches( object|WP_User $user ): void|false

1913function update_user_caches( $user ) {1914	if ( $user instanceof WP_User ) {1915		if ( ! $user->exists() ) {1916			return false;1917		}1918 1919		$user = $user->data;1920	}1921 1922	wp_cache_add( $user->ID, $user, 'users' );1923	wp_cache_add( $user->user_login, $user->ID, 'userlogins' );1924	wp_cache_add( $user->user_nicename, $user->ID, 'userslugs' );1925 1926	if ( ! empty( $user->user_email ) ) {1927		wp_cache_add( $user->user_email, $user->ID, 'useremail' );1928	}1929}