如何使用PHP旋转动画gif？

Question

Is there any code out there that will allow me to rotate an animated gif 180 degrees while still maintaining the animation?

I tried using the standard imagerotate function (changing the appropriate things from jpeg to gif), but it still only outputs the first frame.

I also found https://stackoverflow.com/a/9356895/462158, but I would like to find something other than ImageMagick if at all possible.

Thanks!

Answer 1

You can either use ImageMagick rotateImage, as suggested in the comments

OR

1. Extract frames from the gif
2. Process individual frames the way you like (imagerotate in your case..)
3. Reconstruct animation

To extract frames from gif image (and reconstruct the animation), you can use gifsicle for example.

The first way is simpler, so first try that, but in case it does not fit the need somehow, processing manually is always an option