CODEWITHSUNDEEP
php
ale
ale

Reputation: 11830

Polymorphism in PHP: Virtual function overrides parent function but parent function still gets called

I have been programming in C++ but have moved to PHP for a while it seems like polymorphism is different in PHP. I know that in PHP, all functions that are not private (i.e. public/protected) are in fact also virtual. Here is my child class definition

class Child extends Parent {
   public function foo() {

   }
}

then my Parent looks like

class Parent {
    public function foo() {

    }
}

I want my child class to use all of the parent's code apart from the foo() function - I want the child to use its own foo() function.

The issue is that the parent's foo() is still called. Interestingly, my IDE (NetBeans) says that it is getting overridden correctly.

I am using $this->foo() in the parent and child.. this should be ok yes? It just says 'execute the function foo for the current object'.. maybe I'm going wrong here?

Upvotes: 0

Views: 635

Answers (2)

s.webbandit
s.webbandit

Reputation: 17000

just tried: 

class Child1 extends Parent1 {

    public function foo() {
        echo 'c';
    }

}

class Parent1 {

    public function foo() {
        echo 'p';
    }

}



$class = new Child1;

$class->foo();

prints "c"

You doing everithing right.

Upvotes: 2

xdazz
xdazz

Reputation: 160863

Unless you call parent::foo(), the parent's foo() will not be called.

Upvotes: 3

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