PHP file uploads being “hijacked” by partial uploads

Question

I have a site that is receiving 30-40k photo uploads a day and I\'ve been seeing an issue pop up with more frequency now. This issue is this:

Our upload script recei

Answer 1

Can you try different names for the temp file to avoid its being overwritten? Can you identify the origin of the new, incorrect and incomplete file?

Is this a development environment? Is it possible that more than one user is uploading files at the same time?

Try your program with very small images to check if SchizoDuckie is correct about filesize problems.

Try with different navigators to eliminate the admittedly remote possibility that it is a local problem.

Check permissions on the directory where the temp file is stored.