What potential pitfalls should be considered when subtracting two time values in PHP?

When subtracting two time values in PHP, potential pitfalls to consider include handling timezones, ensuring the values are in the correct format for subtraction, and dealing with daylight saving time changes. To solve these issues, it is recommended to use PHP's DateTime class along with appropriate timezone settings to accurately perform the subtraction. 

// Example code snippet to subtract two time values in PHP using DateTime class
$timezone = new DateTimeZone('America/New_York');

$start_time = new DateTime('2022-01-01 08:00:00', $timezone);
$end_time = new DateTime('2022-01-01 10:30:00', $timezone);

$interval = $start_time->diff($end_time);
echo $interval->format('%H:%I:%S'); // Output the time difference in hours, minutes, and seconds

Keywords

time values subtraction PHP DateTime timezone

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