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array_mystery8

Language/Type: PHP array mystery arrays

Consider the following function: 

function array_mystery8($arr) {
    for ($i = 0; $i < count($arr); $i++) {
        $n = $arr[$i];
        if ($n % 10 == 0) {
            array_splice($arr, $i, 1);
            array_push($arr, $n);
        }
    }
    return $arr;
}

For each array below, indicate what the returned array's contents would be after the function array_mystery8 were called and passed that array as its parameter.

[1, 20, 3, 40]
[80, 3, 40, 20, 7]
[40, 20, 60, 1, 80, 30]

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