$amounts = explode(‘,’, $_POST[#הסכום#]);
$paymentDate = $_POST[#ישולם בתאריך#];
$currentMonth = date(‘m’);

$totalAmount = 0;
foreach ($amounts as $amount) {
$dateParts = explode(‘/’, $paymentDate);
if ($dateParts[1] == $currentMonth) {
$totalAmount += intval($amount);
}
}

return $totalAmount;