What is the process for converting a timestamp back into a date in PHP?

To convert a timestamp back into a date in PHP, you can use the date() function along with the timestamp value and the desired date format. This function formats a timestamp into a human-readable date. Simply pass the timestamp value as the second argument and the date format as the first argument to the date() function.

$timestamp = 1609459200; // Example timestamp
$date = date('Y-m-d H:i:s', $timestamp);
echo $date; // Output: 2021-01-01 00:00:00