How can using DateTime objects in PHP help avoid issues related to time zones and daylight saving time changes?

Using DateTime objects in PHP can help avoid issues related to time zones and daylight saving time changes by allowing you to easily convert and manipulate dates and times while taking into account different time zones and daylight saving time rules. DateTime objects provide methods for setting time zones, converting between time zones, and adjusting for daylight saving time changes, which helps ensure accurate and consistent handling of dates and times across different locations.

// Create a DateTime object with a specific time zone
$date = new DateTime('now', new DateTimeZone('America/New_York'));

// Convert the DateTime object to a different time zone
$date->setTimezone(new DateTimeZone('Europe/London'));

// Output the date and time in the new time zone
echo $date->format('Y-m-d H:i:s');