Information Hiding#

The process of hiding the ‘inner workings’ of a method or class by providing only an interface to access the object.


The binding of data and methods into a single unit, i.e. a class.

It is considered good convention to declare all variables in a class as private if the class designed for encapsulation.

Access is granted through getters and setters.

Get and Set#

Get allows the reading of a property’s value, while set allows the modifying of a property’s value.

It’s common practice to write get and set methods using the property name. For example for __username we would use getUsername and setUserName.