function bp_displayed_user_id() {
	$bp = buddypress();
	$id = !empty( $bp->displayed_user->id )
		? $bp->displayed_user->id
		: 0;

	/**
	 * Filters the ID of the currently displayed user.
	 *
	 * @since 1.0.0
	 *
	 * @param int $id ID of the currently displayed user.
	 */
	return (int) apply_filters( 'bp_displayed_user_id', $id );
}