How can you optimize PHP code to ensure that each data set is written to a new line in a file for better readability and organization?

To ensure that each data set is written to a new line in a file for better readability and organization, you can use the PHP "\n" newline character when writing data to the file. This will insert a line break after each data set, making it easier to read and manage the information stored in the file.

$data = "Data set 1\n";
$file = fopen("data.txt", "a");
fwrite($file, $data);
fclose($file);