Escape slashes?

Hi! I am trying to do some fileuploading.. but I am running into a problem with escaping spaces. Basically, I have this directory that includes spaces and I need to be able to change the spaces to "\ " so for example.. my directory is: Fun Documents I need to change it to: Fun\ Documents That way when I copy.. I wont get errors! Plus, there is always the potential that the filename might have a space in it. So how do I escape these spaces? I have tried this.. and it doesnt work: $copyto = strtr($copyto, " ", "\ "); That basically just replaces the spaces with a backslash. I tried this as well: $copyto = strtr($copyto, " ", "\\ "); Didnt work. I am sorta clueless.. any ideas? Thanks in advance, Tanya