Toilet doors should either be sliding or outward-opening. The photo on the left shows a good sliding door. The photo on the right shows an inward-opening door. The wheelchair user in the photo could not close the door to use the toilet.
It is important to have a horizontal bar at the toilet door. The drawing on the left shows that it is more difficult of a wheelchair user to close a door if there is no horizontal bar. The drawing on the right shows that a wheelchair user can close the door easily by using the horizontal bar.