What potential pitfalls should be considered when storing timestamps in a PHP application?

When storing timestamps in a PHP application, one potential pitfall to consider is the possibility of timestamps being stored in different timezones or formats, leading to inconsistencies in data retrieval and calculations. To avoid this issue, it is recommended to store timestamps in a standardized format, such as Unix timestamp (UTC), and always convert timestamps to the desired timezone or format when displaying or manipulating them. 

// Storing timestamp in UTC format
$timestamp = time();

// Converting timestamp to a specific timezone (e.g. New York)
$date = new DateTime();
$date->setTimestamp($timestamp);
$date->setTimezone(new DateTimeZone('America/New_York'));
$newTimestamp = $date->format('Y-m-d H:i:s');

Keywords

timezone date_default_timezone_set daylight saving time UNIX timestamp datetime conversion

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