Macro VBA that list the content inside the folder and subfolder and sort it alphabatically

So, as you are learning, show us what you have done so far and where you are stacked (or just say you want somebody to do it for you, but then dont aey you are learning).

and also be more precise - shall the content of a folder and subfolder(s) be sorted together
i.e

PHP Code: 

file3
file4
file2
sub/file5
sub/file4
sub2/file1 


sorted into

PHP Code: 

file1
file2
file3
file4
file4
file5 


or keeping the structure unsorted, so result shall be

PHP Code: 

file2
file3
file4
sub/file4
sub/file5
sub2/file1