Uploading files.

Hi everyone. I´m in a big doubt about uploading files ins a safe way. I wont give permission for the web server user to write in some folder of my system and then use move_uploaded_file function in order to keep it secure. I was using ftp functions to do it but a get a new trouble, in some servers my ftp user has no permission to read in the upload temp folder of php. I am determined to access by ftp funcions, give permission to web server user, put the file by move_uploaded_file and take the permission previously gave. I do not test but i think it will works. Someone has another tip to do it without loss security? Thanks in advance.