I have been constructing a site on a webspace with Safe Mode On, and am able to successfully use move_uploaded_file with a posted file. The documentation on this function implies that UIDs must match between a script and the file it reads.

In my case, the script's UID is 605, and the temporary file's is 0 and yet the function behaves perfectly. Perhaps the documentation should be revised accordingly?

This is excellent in the sense that I needed some way of retrieving this data with safe mode on, but (to my limited understanding) seems to undermine the safe mode principle of UID restriction.