How can PHP developers ensure that their code is resilient to changes in time zones and daylight saving adjustments in different regions?

To ensure that PHP code is resilient to changes in time zones and daylight saving adjustments in different regions, developers should always use UTC (Coordinated Universal Time) for storing and manipulating dates and times in their applications. This helps to avoid issues related to time zone conversions and daylight saving time changes. 

// Set the default timezone to UTC
date_default_timezone_set('UTC');

// Get the current date and time in UTC
$currentDateTime = new DateTime('now', new DateTimeZone('UTC'));

// Convert a specific date and time to UTC
$specificDateTime = new DateTime('2023-01-01 12:00:00', new DateTimeZone('America/New_York'));
$specificDateTime->setTimezone(new DateTimeZone('UTC'));

// Display the current date and time in UTC
echo $currentDateTime->format('Y-m-d H:i:s');

Keywords

DateTime date_default_timezone_set DateTimeZone timezone daylight saving time

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