PHP Decode

<?php

declare(strict_types=1);

return [
    [
        'QWDFGYUIOP',
        'QWERTYUIOP',
        'ERT',
        'DFG',
    ],
    [
        'Mxrk Bxker',
        'Mark Baker',
        'a',
        'x',
    ],
    [
        'Mxrk Baker',
        'Mark Baker',
        'a',
        'x',
        1,
    ],
    [
        'Mark Bxker',
        'Mark Baker',
        'a',
        'x',
        2,
    ],
    [
        'Mark Bakker',
        'Mark Baker',
        'k',
        'kk',
        2,
    ],
    [
        'Mark Baker',
        'Mark Baker',
        'x',
        'a',
        1,
    ],
    [
        '    ',
        '    ',
        '',
        '',
    ],
    [
        '    ',
        '    ',
        '',
        '',
        2,
    ],
    [
        '    ',
        '    ',
        '',
        '',
        2,
    ],
    'Unicode equivalence is not supported' => [
        "\u{0061}\u{030A}",
        "\u{0061}\u{030A}",
        "\u{00E5}",
        'x',
    ],
    'Multibytes are supported' => [
        'x',
        "\u{00E5}",
        "\u{00E5}",
        'x',
    ],
    'no arguments' => ['exception'],
    'one argument' => ['exception', 'a'],
    'two arguments' => ['exception', 'a', 'b'],
    'negative instance' => ['#VALUE!', 'abcdefg', 'def', 123, -1],
    'non-numeric instance' => ['#VALUE!', 'abcdefg', 'def', 123, 'xyz'],
    'null instance' => ['abc123g', 'abcdefg', 'def', 123],
    '0 instance' => ['#VALUE!', 'abcdefg', 'def', 123, 0],
    '1 instance' => ['abc123g', 'abcdefg', 'def', 123, 1],
    'past last instance' => ['abcdefg', 'abcdefg', 'def', 123, 2],
    'bool false instance' => ['#VALUE!', 'abcdefg', 'def', '123', false],
    'bool true instance' => ['#VALUE!', 'abcdefg', 'def', '123', true],
    'bool text' => ['FA-SE', false, 'L', '-'],
    'propagate REF' => ['#REF!', '=sheet99!A1', 'A', 'x'],
    'propagate DIV0' => ['#DIV/0!', 'hello', '=1/0', 1, 'x'],
    'string which just sneaks in' => [
        str_repeat('A', 32766) . 'C',
        str_repeat('A', 32766) . 'B',
        'B',
        'C',
    ],
    'string which overflows' => [
        '#VALUE!',
        str_repeat('A', 32766) . 'B',
        'B',
        'CC',
    ],
    'okay long string instance' => [
        'AAAAB' . str_repeat('A', 32762),
        str_repeat('A', 32767),
        'A',
        'B',
        5,
    ],
    'overflow long string instance' => [
        '#VALUE!',
        str_repeat('A', 32767),
        'A',
        'BB',
        5,
    ],
];
 ?>