What is the recommended approach for calculating the difference between two dates in PHP 5.2?

When working with dates in PHP 5.2, the recommended approach for calculating the difference between two dates is to use the `strtotime()` function to convert the dates into Unix timestamps, then subtract one timestamp from the other to get the difference in seconds. You can then convert this difference into days, hours, minutes, etc., as needed. 

$date1 = strtotime('2022-01-01');
$date2 = strtotime('2022-01-10');

$diff_seconds = $date2 - $date1;
$diff_days = floor($diff_seconds / (60 * 60 * 24));

echo "The difference between the two dates is: $diff_days days.";

Keywords

PHP 5.2 date_diff DateTime date_create date interval

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