$arrival_date = #תאריך הגעה לחו”ל#;
$departure_date = #תאריך עזיבה#;

$arrival_timestamp = strtotime($arrival_date);
$departure_timestamp = strtotime($departure_date);

$total_days = ceil(($departure_timestamp – $arrival_timestamp) / (60 * 60 * 24)) + 1;

return $total_days;