Question

I have a class named Display which extends class Layout, which extends class DOMDocument. I get: Fatal error: Call to a member function loadHTMLFile() on a non-object. Code as follows:

In index.php :

 $dom = new Display();
 $dom->displayData();

In Display.php :

class Display extends Layout {

    public function displayData(){

    $dom = parent::__construct();
    $dom->loadHTMLfile("afile.html");
    echo $dom->saveHTML();

    }

}

My question is: When I call parent::__construct() , isn’t this the same as using “new DOMDocument“, since the Display class extends Layout and DOMDocument?Thanks

Answer 1

If you have the loadHTMLfile function in your parent class, the subclass will inherit it. So you should be able to do:

class Display extends Layout {

    public function displayData(){

        $this->loadHTMLfile("afile.html");
        echo $this->saveHTML();

    }

}