<?php

class Cat
{
    protected $name;
    protected $color;
    protected $age;
    protected $height;

    public function __construct(string $name = '', string $color = '', int $age = 0, float $height = 0)
    {
        $this->name = $name;
        $this->color = $color;
        $this->age = $age;
        $this->height = $height;
    }


    public function getName()
    {
        return $this->name;

    }

    public function setAge(int $a)
    {
        if ($a < $this->age) {
            die('Вы слишком заигрались в "Бога",ваш котик мёртв.');
        } else $this->age = $a;
    }

    public function setHeight(float $h)
    {
        $this->height = $h;
    }

    public function getAge()
    {
        return $this->age;
    }
}

$cat0 = new Cat();
var_dump($cat0);
$cat = new Cat('white', 10, 10.2);
var_dump($cat);
$cat->setAge(11);
$cat->setHeight(15.2);
var_dump($cat);
$cat->setAge(10);
var_dump($cat);