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abstract inheritance

 

abstract inheritance, Oh the humanity...
maffelu

2 Jul, 2009 - 11:59 PM
Post #1

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Posts: 134



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Right.

Some code first to explain my toughts:

CODE

<?php

abstract class A{
    abstract public function foo();
}

abstract class B extends A{
    abstract public function foo();
}

class C extends B{
    public function foo(){}
}

?>


This doesn't work and gives the following error:

Fatal error: Can't inherit abstract function A::foo() (previously declared abstract in cool.gif in .....tester.php on line 9

Now, the example above is not exactly what I'm doing, but it's damn close. I have A, which is a very very general root class for basically everything in my class lib. B is a little more specific and acts as base root for a certain part of the class lib, and C is a direct class that inherits B and should implement the foo() function.

Is it not possible to pass on the task of implementing an abstract function?

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maffelu

RE: Abstract Inheritance

3 Jul, 2009 - 12:10 AM
Post #2

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[SOLVED]

Of course, you shouldn't bring it up at all in B:
CODE

<?php

abstract class A{
    abstract public function foo();
}

abstract class B extends A{
}

class C extends B{
    public function foo(){}
}

?>
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