(PECL gmagick >= Unknown)
Gmagick::swirlimage — Swirls the pixels about the center of the image
$degrees) : Gmagick
Swirls the pixels about the center of the image, where degrees indicates the sweep of the arc through which each pixel is moved. You get a more dramatic effect as the degrees move from 1 to 360.
Define the tightness of the swirling effect.
The Gmagick object on success