Convert Integers to Roman Numerals

A nice little script to easily convert from a decimal integer into roman numerals.

<?php

function getRomanNumerals($decimalInteger) 
{
 $n = intval($decimalInteger);
 $res = '';

 $roman_numerals = array(
    'M'  => 1000,
    'CM' => 900,
    'D'  => 500,
    'CD' => 400,
    'C'  => 100,
    'XC' => 90,
    'L'  => 50,
    'XL' => 40,
    'X'  => 10,
    'IX' => 9,
    'V'  => 5,
    'IV' => 4,
    'I'  => 1);

 foreach ($roman_numerals as $roman => $numeral) 
 {
  $matches = intval($n / $numeral);
  $res .= str_repeat($roman, $matches);
  $n = $n % $numeral;
 }

 return $res;
}

echo getRomanNumerals(32);  ////Example Use - returns XXXII

?>

Any improvements? Drop us a comment. Thanks!