What are the potential pitfalls of using mktime() function to calculate date differences in PHP?

Using mktime() function to calculate date differences in PHP can lead to issues with daylight saving time changes and leap years, as mktime() does not account for these factors. To accurately calculate date differences, it is recommended to use the DateTime class in PHP, which handles these complexities automatically. 

$date1 = new DateTime('2022-01-01');
$date2 = new DateTime('2022-03-01');
$interval = $date1->diff($date2);
echo $interval->format('%R%a days');

Keywords

mktime date differences PHP timestamp calculation

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