PHP - get_class_methods() Problem

Question

I've this sample code:

class A
{
 public function A_A() { /* ... */ }

 public function A_B() { /* ... */ }
}

class B extends A
{
 public function B_A() { /* ... */ }

 public function B_B() { /* ... */ }

 public function B_C()
 {
  return get_class_methods($this);
 }
}

$a = new A();
$b = new B();

Doing this:

echo '<pre>';
print_r($b->B_C());
echo '</pre>';

Yields the following output:

Array
(
    [0] => B_A
    [1] => B_B
    [2] => B_C
    [3] => A_A
    [4] => A_B
)

How can I make it return only the following methods?

Array
(
    [0] => B_A
    [1] => B_B
    [2] => B_C
)

I've a method in class A that should call all the methods in class B, the problem is of course that it leads to a infinite loop due to the values returned by get_class_methods().

Answer 1

You can't. Part of the functionality of extending a class is that you get all of the methods of the class you extended, in the new class, identical to as if you defined them in the new class itself.

Answer 2

You might need full strength Reflection. However, before you go there, it might be worth trying something like this.

array_diff(get_class_methods($this), get_class_methods(get_parent_class($this)))