Are there alternative methods or libraries in PHP that can be used to handle cookie expiration dates without relying on UNIX timestamps?

When handling cookie expiration dates in PHP, relying on UNIX timestamps can be cumbersome and error-prone. An alternative method is to use the `strtotime` function to easily calculate expiration dates in a human-readable format. This can make the code more readable and maintainable.

// Set cookie with expiration date in 1 week
$expiration_date = strtotime('+1 week');
setcookie('cookie_name', 'cookie_value', $expiration_date);