function main()
{
include_once 'numbers.php';
$numbers = listToArray($numberList);
$digitCount = count($numbers[0]);
$numberCount = count($numbers);
$realSum = [];
$startUnit = 0;
/**
* This use the elementary sum method from right to left.
*/
for ($i = $digitCount - 1; $i >= 0; $i--) {
$sum = 0;
for ($j = 0; $j < $numberCount; $j++) {
$sum += intval($numbers[$j][$i]);
}
$sumSplit = array_reverse(str_split(strval($sum)));
for ($k = 0; $k < count($sumSplit); $k++) {
// NOTE: This null coalesce (??) only works on PHP 7
$realSum[$startUnit + $k] = $realSum[$startUnit + $k] ?? 0;
// Get the sum by column
$colSum = $realSum[$startUnit + $k] + intval($sumSplit[$k]);
// Put remainder to the current result column
$realSum[$startUnit + $k] = $colSum % 10;
// If the column sum is >= 10, put the carry number to the next result column
if ($colSum >= 10) {
$realSum[$startUnit + $k + 1] = $realSum[$startUnit + $k + 1] ?? 0;
// NOTE: This intdiv() is also only on PHP 7
$realSum[$startUnit + $k + 1] += intdiv($colSum, 10);
}
}
$startUnit++;
}
var_dump(implode(array_reverse($realSum)));
}
$out[$c]['type'] = 'changed';
}
if (strnatcmp($waka['drafts'][$_REQUEST['u']]['dateImagesTouched'], $_REQUEST['d']) > 0) {
$c = count($out);
$out[$c]['html'] = renderItemImagesForm($waka['drafts'][$_REQUEST['u']], 'draft');
$out[$c]['location'] = 'draft_images_form';
$out[$c]['type'] = 'changed';
}
if (strnatcmp($waka['drafts'][$_REQUEST['u']]['dateFilesTouched'], $_REQUEST['d']) > 0) {
$c = count($out);
$out[$c]['html'] = renderItemFilesForm($waka['drafts'][$_REQUEST['u']], 'draft');
$out[$c]['location'] = 'draft_files_form';
$out[$c]['type'] = 'changed';
}
}
$oldplist = listToArray($_REQUEST['p']);
$postcount = count($waka['posts']);
for ($p = 0; $p < $postcount; $p++) {
for ($p2 = 0; $p2 < count($oldplist); $p2++) {
if ($oldplist[$p2] == $waka['posts'][$p]['id']) {
array_splice($oldplist, $p2, 1);
}
}
if (strnatcmp($waka['posts'][$p]['dateCreated'], $_REQUEST['d']) > 0) {
$c = count($out);
$out[$c]['html'] = renderPost($waka['posts'][$p], $waka['users'], $user);
$out[$c]['location'] = 'post_' . $waka['posts'][$p]['id'];
$out[$c]['type'] = 'new';
} else {
if (strnatcmp($waka['posts'][$p]['dateContentTouched'], $_REQUEST['d']) > 0) {
$c = count($out);
