fizzbuzz in php

php-fizzbuzz

function fizzbuzz($number, $output) {
    // try with 100 ;-)
    if ($number > 97) {
        return $output;
    }   
    if ($number % 3 == 0 && $number % 5 == 0) {
        $output .= "fizzbuzz\n";
    } else if ($number % 3 == 0) {
        $output .= "fizz\n";
    } else if ($number % 5 == 0) {
        $output .= "buzz\n";
    } else {
        $output .= "$number\n";
    }   
    return fizzbuzz($number + 1, $output);
}

echo fizzbuzz(1, "");