oop - How to call a protected method in php?

Question

here is the class structure. I want Observer:callme() to be callable from Children too.

class Observer
{
    protected callme()
    {
    }
}

class Parent extends Observer
{
    function createChild()
    {
        $this->callme(); // this is OK
        return new Child ($this);
    }
}

class Child
{
    private $this myParent;
    public function __constructor ($myParent)
    {
        $this->myParent = $myParent;
    }

    public function __destroy()
    {
        $this->myParent->callme(); // FAIL!
    }
}

so how to make FAIL work? (without making it public, because its only for used inside "Parent" and its "Children")

Answer 1

The problem is that a protected method is only accessed from the same class or the class children. What you can do is extend your Child class from Parent, like this:

class Child extends Parent
{
    public function __constructor ()
    {
        parent::__constructor();
    }

    public function __destroy()
    {
        $this->callme(); // Should work!
    }
}

Or just change the method to public.

And, btw, is this code some kind of real code that you will use? That constructor receiving the parent object seems to be so wrong. What are you trying to accomplish?