PHP File uploads get corrupted

[webkuh]

I'm building a Flash/PHP/Java application for a client. It works fine locally and yesterday I deployed the files to the client's dev web server.

However, php file uploads now don't upload correctly to their server. I think they made a couple of changes recently to the server which I assume are the root of this problem. If anyone has a suggestion for what I should check for I'd appreciate it.

Basically, when you upload a file via either Flash > PHP or HTML Form > PHP the file uploads to the /tmp directory and I can get a reading for it's tmp_name (no error value). However I used to be able to run GetImageSize on the tmp jpg file at that point to get it's width and height. Now GetImageSize returns no results.

I can use copy() or move_uploaded_file() functions to copy the image to another directory, however the copied image is corrupt.

permissions on /tmp folder are 777 but the tmp images automatically get assigned 600. I can chmod the copied image to 777 or whatever once it's copied but it's still corrupt.

Thanks for any advice.

Nick

[Cups]

This seems unlikely but you could check it. Are they very big (k) images and did the max upload file size directive get changed in the php.ini file?

[webkuh]

The upload_max_filesize setting is 20M and the images I've been testing with are about 500K