Multiply Evens by Odds

5.  <?php
function getMultipleOfEvensAndOdds($n) {
    $evensSum = getSumOfEvenDigits($n);
    $oddsSum = getSumOfOddDigits($n);
    return $evensSum * $oddsSum;
}
function getSumOfOddDigits($n){
    $sumOfOdds = 0;
    while ($n !=0){
        $nextNumber = $n%10;
        if ($nextNumber %2 == 1){
            $sumOfOdds += $nextNumber;
        }
        $n -=$nextNumber;
        $n /=10;
    }
    return $sumOfOdds;
}
function getSumOfEvenDigits($n)
{
    $sumOfEvens = 0;
    while ($n != 0) {
        $nextNumber = $n % 10;
        if ($nextNumber % 2 == 0) {
            $sumOfEvens += $nextNumber;
        }
        $n -= $nextNumber;
        $n /= 10;
    }
    return $sumOfEvens;
}
$n = abs(intval(readline()));
echo getMultipleOfEvensAndOdds($n);