What are the potential pitfalls of using the mktime and time functions in PHP for calculating time differences?

One potential pitfall of using the mktime and time functions in PHP for calculating time differences is that they may not account for daylight saving time changes or time zone differences, leading to inaccurate results. To solve this issue, it is recommended to use the DateTime class in PHP, which provides better support for handling time zones and daylight saving time adjustments. 

// Using DateTime class to calculate time differences
$date1 = new DateTime('2022-01-01 00:00:00', new DateTimeZone('UTC'));
$date2 = new DateTime('2022-01-02 12:00:00', new DateTimeZone('UTC'));

$interval = $date1->diff($date2);
echo $interval->format('%R%a days %H hours %I minutes');

Keywords

mktime time PHP time differences calculation

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