Re: security of uploaded gif files

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Hi, James.

James Benson wrote:
Even if you can embed PHP in a GIF it would still need to be executed by PHP as PHP code, would PHP actually execute that file when it looks like an image, I would think PHP would output an error?

Unless you include/require or eval() its content, PHP won't execute it.


More importantly though, you should be checking the file extension of uploaded files to make sure it is only a .gif

I can make a javascript file with a .gif extension, actually.

Take a look at exif_imagetype().

Regards.
--
Gustavo Narea.
PHP Documentation - Spanish Translation Team.
Valencia, Venezuela.

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