PhpSpreadsheet/tests/data/Calculation/MathTrig/ARABIC.php

<?php

return [
    [
        0,
        ' ',
    ],
    [
        49,
        'XLIX',
    ],
    [
        50,
        'L',
    ],
    [
        2012,
        'MMXII',
    ],
    [
        999,
        'CMXCIX',
    ],
    [
        499,
        'CDXCIX',
    ],
    [
        2018,
        'MMXVIII',
    ],
    [
        -2018,
        '-MMXVIII',
    ],
];