$this->d = $letters_4;
}
public function printEverthing()
{
echo $this->a . "," . $this->b . "," . $this->c . "," . $this->d;
}
}
class Three extends Two
{
public $e;
public $f;
function __construct($letters_1, $letters_2, $letters_3, $letters_4, $letters_5, $letters_6)
{
$this->a = $letters_1;
$this->b = $letters_2;
$this->c = $letters_3;
$this->d = $letters_4;
$this->e = $letters_5;
$this->f = $letters_6;
}
public function printEverthing()
{
echo $this->a . "," . $this->b . "," . $this->c . "," . $this->d . "," . $this->e . "," . $this->f;
}
}
$object1 = new One("dog", "cat" . PHP_EOL);
$object2 = new Two("horse", "pig", "squirrel", "monkey" . PHP_EOL);
$object3 = new Three("woodchuck", "mole", "giraffe", "shark", "deer", "robin");
$object1->printEverthing();
$object2->printEverthing();
$object3->printEverthing();