在PHP中验证图像

Question

I'm using GD to create jpegs from files that a user uploads.

What is the best way to validate that the image the user has uploaded is valid?

By valid I mean that the file is not a corrupt image that GD won't like, I do extension testing client side so they can only upload jpegs/gifs/pngs.

Thanks

Answer 1

You could use getimagesize. It will return FALSE if the image could not be loaded. It has support for most image types.