safe mode and file handling

I and my www space provider have fought with a problem. All files/directories created by PHP are owned by nobody/nobody and we want them to be created by my own uid/guid. How this would be solved by least amount of modification in the scripts. The problem is in that safe mode requires that the script and the directory containing the file/directory to be accessed is owned by me and only me. If I tell PHP to create a directory test1 under my www root and then change to that directory and tell it to create another directory for example called test2, it fails because test1 is owned by nobody, not me.