Multiple image upload and resize Images : SECURITY

Question

Is multiple upload secure in php? How can I prevent security holes? Thanks in advance

Answer 1

Here is a good manual to how to protect uploaded files using php including protection from GIF images exploit.

Answer 2

If your really paranoid you can re-create the image after upload (with imageMagick for example) and save the newly created image on the server. Then it will definitely be secure.