array_mystery1

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array_mystery2 >

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Language/Type: PHP array mystery arrays

Consider the following function:

function array_mystery1($arr) {
    for ($i = 0; $i < count($arr) - 1; $i++) {
        if ($i % 2 == 0) {
            $arr[$i]++;
        } else {
            $arr[$i]--;
        }
    }
    return $arr;
}

For each array below, indicate what the returned array's contents would be after the function array_mystery1 were called and passed that array as its parameter.

`[6, 3]`
`[2, 4, 6]`
`[1, 2, 3, 4]`
`[2, 2, 2, 2, 2]`
`[7, 3, 2, 0, 5, 1]`

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array_mystery1