Copy file or all files from a folder

You can use the readStream and writeStream to copy a file (or all files from a folder) from one disk to another keeping the memory usage low.

 1// List all the files from a folder
 2$files = Storage::disk('origin')->allFiles('/from-folder-name');
 3 
 4// Using normal get and put (the whole file string at once)
 5foreach($files as $file) {
 6    Storage::disk('destination')->put(
 7        "optional-folder-name" . basename($file),
 8        Storage::disk('origin')->get($file)
 9    );
10}
11 
12// Best: using Streams to keep memory usage low (good for large files)
13foreach ($files as $file) {
14    Storage::disk('destination')->writeStream(
15        "optional-folder-name" . basename($file),
16        Storage::disk('origin')->readStream($file)
17    );
18}

Tip given by @alanrezende