Are there any recommended libraries or functions in PHP that can simplify the process of converting timestamps between different formats, such as the 01.01.1601 format and Unix timestamps?
When converting timestamps between different formats in PHP, it can be helpful to use the built-in functions like `strtotime()` and `date()` to convert timestamps to Unix timestamps and other formats. Additionally, the DateTime class in PHP provides a flexible way to work with dates and times, allowing for easy conversion between different formats.
// Convert a Unix timestamp to a 01.01.1601 timestamp
$unixTimestamp = time();
$dateTime = new DateTime();
$dateTime->setTimestamp($unixTimestamp);
$dateTime->setTimezone(new DateTimeZone('UTC'));
$convertedTimestamp = $dateTime->format('d.m.Y');
echo "Unix Timestamp: " . $unixTimestamp . "\n";
echo "Converted Timestamp: " . $convertedTimestamp . "\n";
// Convert a 01.01.1601 timestamp to a Unix timestamp
$oldTimestamp = '01.01.1601';
$dateTime = DateTime::createFromFormat('d.m.Y', $oldTimestamp, new DateTimeZone('UTC'));
$convertedUnixTimestamp = $dateTime->getTimestamp();
echo "Old Timestamp: " . $oldTimestamp . "\n";
echo "Converted Unix Timestamp: " . $convertedUnixTimestamp . "\n";