You may find yourself writing code that refers to
variables and functions in base classes. This is particularly
true if your derived class is a refinement or specialisation
of code in your base class.
Instead of using the literal name of the base class in
your code, you should be using the special name parent, which refers to the name of your base
class as given in the extends
declaration of your class. By doing this, you avoid using the
name of your base class in more than one place. Should your
inheritance tree change during implementation, the change is
easily made by simply changing the
extends declaration of your class.
class A { function example() { echo "I am A::example() and provide basic functionality. br \n"; } } class B extends A { function example() { echo "I am B::example() and provide additional functionality. br \n"; parent::example(); } } $b = new B; // This will call B::example(), which will in turn call A::example(). $b- example(); |