php - Upload file on a subdomain

For my app I decided to change the directory of static and public content to another domain. However, I had troubles about the copy of files into folders.

I decided to restrict the access of subdomain to a specific path. Indeed, when you log in to the ftp, you can't show the subfolders

So atm, this is what I have : A domain www.domain.com A subdomain www.static.domain.com

Ftp logs which only allow me to show the content of www.static.domain.com

Then, I wish to copy files and directories after user's register. I can create folders, but I can't copy files...

The getcwd() function returns me this : /datas/vol2/xxxx/var/www/domain.com/htdocs

instead of /datas/vol2/xxxx/var/www/static.domain.com/htdocs

That's why I can't copy the index.html file at the root of the subdomain to each folders i'm going to create.

Do you have any ideas about that ?

Thanks for answers T