FizzBuzz Challenge in PHP using Console Command

FizzBuzz.php

<?php
class FizzBuzz
{
    public $start;
    public $last;

    public function __construct($start=0, $last=100)
    {
        $this->start = $start;
        $this->last = $last;
    }

    public function run()
    {
        for ($i = $this->start; $i <= $this->last; $i++) {
            $isFizz = $i % 3 == 0;
            $isBuzz = $i % 5 == 0;

            if ($isFizz)
                echo "Fizz";
            if ($isBuzz)
                echo "Buzz";
            if (! $isFizz && ! $isBuzz)
                echo $i;
            
            echo PHP_EOL;
        }
    }
}

$fizzBuzz = new FizzBuzz($argv[1], $argv[2]);
$fizzBuzz->run();
//Example: php FizzBuzz.php 1 100
?>

simpleFizzBuzz.php

<?php
function fizz_buzz($start, $last)
{
    for ($i = $start; $i <= $last; $i++) {
        $isFizz = $i % 3 == 0;
        $isBuzz = $i % 5 == 0;

        if ($isFizz)
            echo "Fizz";
        if ($isBuzz)
            echo "Buzz";
        if (! $isFizz && ! $isBuzz)
            echo $i;
        
        echo PHP_EOL;
    }
}

fizz_buzz($argv[1], $argv[2]);
//Example: php simpleFizzBuzz.php 1 100
?>