What are some best practices for clearing cached data in PHP after saving it to a file?

When saving data to a file in PHP, it's important to clear any cached data to ensure that the most up-to-date information is being used. One way to do this is by using the `clearstatcache()` function, which clears the file status cache for the specified file. This ensures that any changes made to the file are reflected immediately.

// Save data to a file
$data = "Hello, World!";
file_put_contents('data.txt', $data);

// Clear cached data
clearstatcache();