In the context of PHP development, why is it recommended to use DateTime objects instead of relying solely on timestamp calculations for date manipulation?

When working with dates and times in PHP, it is recommended to use DateTime objects instead of relying solely on timestamp calculations for date manipulation. DateTime objects provide a more object-oriented approach to working with dates and times, making it easier to perform operations such as adding or subtracting intervals, formatting dates, and comparing dates. This approach also helps to avoid common pitfalls related to timezones and daylight saving time adjustments.

// Example of using DateTime objects for date manipulation
$date = new DateTime('2022-01-01');
$date->modify('+1 day');
echo $date->format('Y-m-d'); // Output: 2022-01-02