FizzBuzz Solid

fizz.php

<?php

interface rule
{
  public function validates(int $number): bool;
  public function replace(): string;
}

class IsEvenRule implements Rule
{
    public function validates($number): bool
    {
      return $number % 2 === 0;
    }

    public function replace(): string
    {
      return 'Whizz';
    }
}


class FizzBuzz
{
  private $rules;

  public function addRule(Rule $rule)
  {
      $this->rules[] = $rule;
  }

  public function generateList(int $number): array
  {
    $list = [];
      for($i = 0; $i < $number; $i++)
      {
        $list[] = $this->generateElement($i);
      }
      return $list;
    }

    public function generateElement(int $number)
    {
      foreach($this->rules as $rule) {
        if ($rule->validates($number)) {
          return $rule->replace();
        }
        return (string) $number;
      }
    }
}

$fizzbuzz = new FizzBuzz();
$fizzbuzz->addRule(new IsEvenRule());

print_r($fizzbuzz->generateList(100));