What is the significance of negative timestamp values in PHP on Windows systems?

Negative timestamp values in PHP on Windows systems can occur due to differences in how Windows and Unix-based systems handle dates and times. To solve this issue, you can use the `DateTime` class in PHP to handle timestamps correctly across different systems. By using `DateTime` functions to manipulate dates and times, you can ensure consistent behavior regardless of the underlying operating system.

// Create a DateTime object with the current timestamp
$date = new DateTime();

// Get the timestamp value as an integer
$timestamp = $date->getTimestamp();

// Output the timestamp value
echo $timestamp;