<?php

declare(strict_types=1);

class Rating {
  private $value;

  public function __construct(float $value) {
    if ($value < 0 || $value > 5) {
      throw new \InvalidArgumentException('A rating should always be a number between 0 and 5!');
    }

    $this->value = $value;
  }

  public function getValue() : float {
    return $this->value;
  }
}