PhpSpreadsheet/tests/data/CellSplitRange.php

<?php

return [
    [
        'B4:E9',
        [
            [
                'B4',
                'E9',
            ],
        ],
    ],
    [
        'B4',
        [
            'B4',
        ],
    ],
    [
        'B4:E9,H2:O11',
        [
            [
                'B4',
                'E9',
            ],
            [
                'H2',
                'O11',
            ],
        ],
    ],
];