How can mktime in PHP handle daylight saving time automatically?

When using mktime in PHP to work with dates and times, it does not handle daylight saving time automatically. To ensure that mktime adjusts for daylight saving time, you can set the timezone using date_default_timezone_set() to the desired timezone that observes daylight saving time. This will allow mktime to correctly calculate the timestamp while considering the daylight saving time changes. 

// Set the timezone to a location that observes daylight saving time
date_default_timezone_set('America/New_York');

// Create a timestamp using mktime
$timestamp = mktime(12, 0, 0, 6, 1, 2022);

// Display the timestamp
echo $timestamp;

Keywords

mktime PHP daylight saving time automatic handling timezones

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