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when I look through GitHub most projects define methods in the interface this way:
interface ExampleInterface
{
function getId();
}
my question now is why it is bad style to define the method visability in the Interface:
interface ExampleInterface
{
public function getId();
}
It makes the interface more strict but isn't that whats an interface used for?
625
All methods declared in an interface must be public; this is the nature of an interface. In practice, interfaces serve two complementary purposes: To allow developers to create objects of different classes that may be used interchangeably because they implement the same interface or interfaces.
Protected members of an interface In general, the protected members can be accessed in the same class or, the class inheriting it. But, we do not inherit an interface we will implement it. Therefore, the members of an interface cannot be protected.
Interfaces can contain methods and/or constants, but no attributes.
First of all Interfaces are used to specify common methods for a set of unrelated classes for which every class will have a unique implementation. Therefore it is not possible to specify the access modifier as private since it cannot be accessed by other classes to be overridden.
what is the point of a private function in an interface? declaring public is redundant.
from TFM:
All methods declared in an interface must be public, this is the nature of an interface.
http://php.net/manual/en/language.oop5.interfaces.php
168
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