PHP - Check to see if an image has a drop shadow added?

I'm wondering if there's a decent way or any of some sort to check an image to see if there is a drop shadow added. Doing this with ph开发者_开发百科p, if possible.

Just curious if there's any clever way of going about this, possibly.

Thanks, Shawn

No, there's no "clever" way of doing this if you mean a drop shadow inside the image. You need to do it the hard way with gd or imagemagick or something like that. Manually testing for gradients.

If you mean an html border, you can of course check the css of the element.