How can PHP developers effectively handle datetime values and calculations?

PHP developers can effectively handle datetime values and calculations by using the built-in DateTime class. This class provides various methods to manipulate dates, perform calculations, and format date/time strings. By utilizing this class, developers can easily work with datetime values and ensure accurate calculations.

// Example of adding 1 day to a given date
$date = new DateTime('2022-01-01');
$date->modify('+1 day');
echo $date->format('Y-m-d'); // Output: 2022-01-02