Are there any specific PHP functions or methods that can simplify the process of calculating time intervals?

Calculating time intervals in PHP can be simplified using the `DateTime` class along with its methods such as `diff()` to calculate the difference between two dates. This allows for easy calculation of time intervals in various formats such as days, hours, minutes, etc. 

$startDate = new DateTime('2022-01-01');
$endDate = new DateTime('2022-01-10');

$interval = $startDate->diff($endDate);

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

Keywords

PHP functions time intervals date_diff strtotime DateTimeImmutable

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