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PHP Object-Oriented PHP Basics (Retired) Inheritance, Interfaces, and Exceptions Object Inheritance

Posted by Paul Mather
Paul Mather
3,313 Points

Code not returning string

I'm doing the Object Inheritance track and i've copied, from what i can see, the code written by the tutor exactly as they have it, however for some odd reason the $flavor i.e. Grape isn't returned, but the rest of the object is. Any ideas?

class Product {

    public $name = 'default_name';
    public $price = 0;
    public $desc = "default description";

    function __construct($name, $price, $desc) {
        $this->name = $name;
        $this->price = $price;
        $this->desc = $desc;
    }

    public function getInfo() {
        return "Product Name: " . $this->name;
    }
}

class Soda extends Product {

    public $flavor;

    function __construct($name, $price, $desc, $flavor) {
        parent::__construct($name, $price, $desc);
    }

    public function getInfo() {
        return "Product Name: " . $this->name . " Flavor: " . $this->flavor;
    }
}

$shirt = new Product("Space Juice T-Shirt", 20, "Awesome Grey T-Shirt");
$soda = new Soda("Space Juice Soda", 2, "Thirst mutilator", "Grape");

echo $soda->getInfo();```

2 Answers

Mike Costa
PLUS
Mike Costa
Courses Plus Student 26,362 Points
Mike Costa
Mike Costa
Courses Plus Student 26,362 Points

When you extend the class Product to Soda, you're calling the parent __construct() method, which will initialize its parents values that you are passing into the child object. The Soda construct method has 4 parameters, $name, $price, $desc, and $flavor. The parent constructor is taking care of the first 3, but you're not doing anything with the last one, $flavor. So its not going to get returned. 

public $flavor;
 function __construct($name, $price, $desc, $flavor) {
        parent::__construct($name, $price, $desc);
        $this->flavor = $flavor;
    }
Paul Mather
Paul Mather
3,313 Points
Paul Mather
Paul Mather
3,313 Points

It's amazing how such simple thing pass you by when you're attempting to continue learning PHP at 1am. Thanks Mike.