Php extend method while overriding it - php

Question

Is it possible to extend a parent class method while overriding it ? For example:
class Foo {
public function edit() {
$item = [1,2];
return compact($item);
}
}
class Bar extends Foo {
public function edit() {
// !!! Here, is there any way I could import $item from parent class Foo?
$item2 = [3,4]; //Here, I added (extended the method with) some more variables
return compact($item, $item2); // Here I override the return of the parent method.
}
}
The issue is that I cannot edit the Foo class in any way as it is a vendor package.
I don't want to edit the vendor methods I need to extend them (add something more to their return function)

Answer 1

If you used array_merge() instead it will probably show the results better...
class Foo {
public function edit() {
$item = [1,2];
return $item;
}
}
class Bar extends Foo {
public function edit() {
$item = parent::edit(); // Call parent method and store returned value
$item2 = [3,4]; //Here, I added (extended the method with) some more variables
return array_merge($item, $item2); // Here I override the return of the parent method.
}
}
$a = new Bar();
print_r($a->edit());
This will output -
Array
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
)
So the call to parent::edit() will return the array from the parent class and this will be added to the array from the second class function.
Update:
I can't test this, but hopefully this will give you what your after...
class Foo {
protected function getData() {
return [1,2];
}
public function edit() {
return return view('view-file', compact($this->getData()));
}
}
class Bar extends Foo {
protected function getData() {
$item = parent::edit();
$item2 = [3,4];
return array_merge($item, $item2);
}
}
This means that the only time you create the view is in the base class, all you do is add the extra information in the derived class.