Day 1 Part 2

Day 1 Part 2.php

<?
$original = str_split($inputString);
$characters = array_merge($original, $original);
$total = 0;
$stepsHalfWay = intval(count($original) / 2);
for ($i = 0; $i < count($original); $i++) {
    $char = $characters[$i];
    $match = $characters[$i + $stepsHalfWay];
    if ($char === $match) {
        $total += intval($char);
    }
}
error_log("result is $total");