What are the best practices for handling dates and time calculations in PHP?

When handling dates and time calculations in PHP, it is important to use the DateTime class which provides a more robust and reliable way to work with dates and times. This class allows for easy manipulation, comparison, and formatting of dates and times. Additionally, it is recommended to set the timezone explicitly to avoid any unexpected results due to server configurations.

// Create a DateTime object with the current date and time
$now = new DateTime();

// Set the timezone to ensure accurate calculations
$now->setTimezone(new DateTimeZone('America/New_York'));

// Add 1 day to the current date
$now->modify('+1 day');

// Format the date in a specific format
echo $now->format('Y-m-d H:i:s');