How can you ensure accurate date and time output in PHP applications?

To ensure accurate date and time output in PHP applications, you can set the correct timezone using the `date_default_timezone_set()` function. This ensures that all date and time functions in your application will use the specified timezone for accurate output.

// Set the timezone to your desired location
date_default_timezone_set('America/New_York');

// Get the current date and time
$currentDateTime = date('Y-m-d H:i:s');

echo $currentDateTime;