Using the static method toNumber you can convert Roman
numerals like XLII to Arabic numbers like
42.
Letters prefixed with an underscore represent numbers larger than 1000.
| Roman | Arabic |
|---|---|
| I | 1 |
| V | 5 |
| X | 10 |
| L | 50 |
| C | 100 |
| D | 500 |
| M | 1000 |
| S, _V | 5000 |
| R, _X | 10 000 |
| P, _L | 50 000 |
| Q, _C | 100 000 |
| O, _D | 500 000 |
| N, _M | 1 000 000 |
Converting Roman numerals to Arabic numbers
<?php
require_once 'Numbers/Roman.php';
echo Numbers_Roman::toNumber('XLII');
//returns: 42
?>