How can the user modify the script to ensure that the file is overwritten instead of deleted and renamed?

To ensure that the file is overwritten instead of deleted and renamed, the user can use the `file_put_contents` function with the `LOCK_EX` flag set to lock the file while writing to it. This will prevent any other processes from accessing the file at the same time, ensuring that the file is overwritten without being deleted or renamed.

$file = 'example.txt';
$content = 'This is the new content that will overwrite the existing content.';

file_put_contents($file, $content, LOCK_EX);