$open_date = “05/05/2024 00:18:00”;
$days_to_add = “שוטף + 25”;

$new_date = date(‘d/m/Y’, strtotime(date(‘Y-m-d’, strtotime($open_date)) . ‘ +1 month +’ . (int)substr($days_to_add, strpos($days_to_add, ‘+’) + 2) . ‘ days’));

return $new_date;