What is the best way to calculate the difference between two dates in PHP?

To calculate the difference between two dates in PHP, you can use the `DateTime` class to create two `DateTime` objects representing the two dates. Then, you can use the `diff()` method to calculate the difference between the two dates. This method returns a `DateInterval` object which can be used to get the difference in days, months, years, etc. 

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

$interval = $date1->diff($date2);

echo $interval->format('%R%a days');

Keywords

PHP date difference calculation functions

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