Untitled

<html lang="ru">
<head>
    <title>ТиОПО</title>
    <meta charset="utf-8">
</head>
</html>
<?php
class Product {
    public $weight;
    public $price;

    function About() {
        return "Вес: $this->weight Цена: $this->price";
    }
}

class milkProduct extends Product {
    public $some_name;

    public function __construct($weight, $price, $name)
    {
        $this->weight = $weight;
        $this->price = $price;
        $this->some_name = $name;
    }
}

class chocolateProduct extends Product {
    public $some_name;

    public function __construct($weight, $price, $name)
    {
        $this->weight = $weight;
        $this->price = $price;
        $this->some_name = $name;
    }
}

class candyProduct extends Product {
    public $some_name;

    public function __construct($weight, $price, $name)
    {
        $this->weight = $weight;
        $this->price = $price;
        $this->some_name = $name;
    }
}

$milk = new milkProduct('123', '321', 'КРЯ1');
$chocolate = new chocolateProduct('321', '123', 'КРЯ2');
$candy = new candyProduct('567', '765', 'КРЯ3');

echo $milk->some_name." | ".$milk->About()."<br/>";
echo $chocolate->some_name." | ".$chocolate->About()."<br/>";
echo $candy->some_name." | ".$candy->About()."<br/>";
?>