Fungsi PHP untuk mengubah angka menjadi bilangan romawi

njr_helper.php

/**
 * @package         njr_helper
 * @subpackage      Helper
 * @author          Nur Rachmat <rachmat.nur91@gmail.com>
 * @version         0.1
 * @copyright       Copyright © 2017 Nur Rachmat <rachmat.nur91@gmail.com>
 */
   
/**
 * Convert Number to Roman
 * @param integer $integer
 * @return string
 */
function convertToRoman($integer)
{
	// Convert the integer into an integer (just to make sure)
	$integer = intval($integer);
	$result = '';

	// Create a lookup array that contains all of the Roman numerals.
	$lookup = 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 ($lookup as $roman => $value) {
		// Determine the number of matches
		$matches = intval($integer / $value);

		// Add the same number of characters to the string
		$result .= str_repeat($roman, $matches);

		// Set the integer to be the remainder of the integer and the value
		$integer = $integer % $value;
	}

	// The Roman numeral should be built, return it
	return $result;
}