function result($currentdate, $operation, $number, $type)
{
// create date object with timestamp from the 'currentdate' form element
$date = new YDDate();
$date->set(intval($currentdate));
// if operation is 1 we want subtract the number
if ($operation == 1) {
$number = -intval($number);
} else {
$number = intval($number);
}
// add number to date
switch (intval($type)) {
case 0:
$date->addMinute($number);
break;
case 1:
$date->addDay($number);
break;
case 2:
$date->addMonth($number);
break;
default:
$date->addYear($number);
}
// assign span with date
$this->ajax->addResult('myspanresult', YDStringUtil::formatDate($date->getTimestamp(), 'datetime'));
// return response to client browser
return $this->ajax->processResults();
}
