(PECL gmagick >= Unknown)
Gmagick::borderimage — Surrounds the image with a border
Surrounds the image with a border of the color defined by the bordercolor GmagickPixel object or a color string.
color
     GmagickPixel object or a string containing the border color
width
     Border width
height
     Border height
The Gmagick object with border defined
Throws an GmagickException on error.