(PECL gmagick >= Unknown)
Gmagick::writeimage — Writes an image to the specified filename
Writes an image to the specified filename. If the filename parameter is null
,
the image is written to the filename set by Gmagick::readimage() or Gmagick::setimagefilename().
filename
The image filename.
The Gmagick object.
Throws an GmagickException on error.