What are the potential pitfalls of storing dates as timestamps in PHP?

Storing dates as timestamps in PHP can lead to difficulties when trying to display or manipulate the date in a human-readable format. To avoid this issue, it is recommended to store dates as DateTime objects, which provide built-in methods for formatting and manipulating dates.

// Storing dates as DateTime objects instead of timestamps
$date = new DateTime('2022-01-01');
echo $date->format('Y-m-d'); // Output: 2022-01-01