xny/vendor/phpoffice/phpspreadsheet/tests/data/Cell/R1C1ConversionToA1Absolute.php

<?php

return [
    ['A1', 'R1C1'],
    ['B2', 'R2C2'],
    ['L5', 'R5C12'],
    ['Z1024', 'R1024C26'],
    ['AA2048', 'R2048C27'],
    ['AZ4096', 'R4096C52'],
    ['BA8192', 'R8192C53'],
    ['IV65535', 'R65535C256'],
    ['K1', 'RC11'],
    ['A16', 'R16C'],
];