Working with unmanaged files is actually pretty similar to doing so with managed files, except that they are not tracked in the database using the File entity type. There is a set of helper functions similar to what we've seen for managed files that do the same things--but they have the word unmanaged in them. Let's see some examples.
To save a new file, we do almost like we did before:
$image = file_get_contents('products://tv.jpg');
$path = file_unmanaged_save_data($image, 'public://tv.jpg', FILE_EXISTS_REPLACE);
We load the file data from wherever and use the file_unmanaged_save_data() the same way as we did file_save_data(). The difference is that the file is going to be saved but no database record is created. So the only way to use it is to rely on the path it is saved at and either try to access it from the browser...
