What are some potential issues when subtracting dates in PHP, and how can they be avoided?

One potential issue when subtracting dates in PHP is that the result may not be accurate due to daylight saving time changes or leap years. To avoid this issue, it is recommended to use the DateTime class in PHP, which handles date calculations accurately. 

$date1 = new DateTime('2022-01-01');
$date2 = new DateTime('2022-01-15');

$interval = $date1->diff($date2);
echo $interval->days; // Output: 14

Keywords

PHP date subtraction date functions DateTime class timezone handling

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