What are the potential pitfalls of using a timestamp for tracking comment submission times in PHP?

Using a timestamp for tracking comment submission times in PHP may lead to inaccuracies due to differences in server time settings or time zones. To solve this issue, it is recommended to use Coordinated Universal Time (UTC) for timestamping comments, as it is a standardized time reference that eliminates time zone discrepancies. 

// Set the default timezone to UTC
date_default_timezone_set('UTC');

// Get the current timestamp in UTC
$timestamp = gmdate("Y-m-d H:i:s");

Keywords

timestamp comment submission PHP timezone accuracy

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