(PECL gmagick >= Unknown)
Gmagick::chopimage — Removes a region of an image and trims
Removes a region of an image and collapses the image to occupy the removed portion.
width
     Width of the chopped area
height
     Height of the chopped area
x
     X origo of the chopped area
y
     Y origo of the chopped area
The chopped Gmagick object
Throws an GmagickException on error.