Furthermore the signatures of the methods must match, i.e. For example, if the abstract method is defined as protected, the function implementation must be defined as either protected or public, but not private. When inheriting from an abstract class, all methods marked abstract in the parent's class declaration must be defined by the child additionally, these methods must be defined with the same (or a less restricted). Methods defined as abstract simply declare the method's signature - they cannot define the implementation. Classes defined as abstract may not be instantiated, and any class that contains at least one abstract method must also be abstract. Contoh Program Oop Php Login Rating: 6,9/10 6276reviewsĬlass Abstraction PHP 5 introduces abstract classes and methods.
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