mozy contest: problem 3 PHP solution

[Nicholas Leippe]

The third problem was to simply add up all the digits in the input.

<?

$sum = 0;
while ($line = fgets(STDIN)) {
        $matches = array();
        preg_match_all("([0-9])", $line, $matches);
        $sum += array_sum($matches[0]);

}

echo "$sum\n";