Help creating a directory in PHP

I've spent two hours on this and cannot figure it out...and I NEED help here. I have a script to create a folder in one directory, let's call it mysite.mydomain/testscript/ And I'm trying to write it to another folder on the site, say mysite.mydomain/profile/ The result would be a new folder mysite.mydomain/profile/ But I CANNOT get this to work. I'm using this code: I run the file and get this warning - mkdir(): File exists in Is the warning telling me I cannot create folders in other folders? If so, why isn't it kicking back a permission denied error? Second... how... HOW do I get this to work?