What potential issues can arise when using date_diff in PHP for calculating intervals between dates?

When using date_diff in PHP for calculating intervals between dates, one potential issue that can arise is that the function may not account for differences in time zones. To solve this issue, it is recommended to set the time zone explicitly before calculating the interval between dates. 

// Set the time zone
date_default_timezone_set('America/New_York');

// Define the dates
$date1 = new DateTime('2022-01-01');
$date2 = new DateTime('2022-01-15');

// Calculate the interval between dates
$interval = date_diff($date1, $date2);

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

Keywords

date_diff PHP intervals dates errors

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