(PECL imagick 2 >= 2.1.0, PECL imagick 3)
Imagick::setImageAlphaChannel — Sets image alpha channel
$mode
): bool
Activate or deactivate image alpha channel. The mode
is one of the Imagick::ALPHACHANNEL_*
constants.
This method is available if Imagick has been compiled against ImageMagick version 6.3.8 or newer.
mode
One of the Imagick::ALPHACHANNEL_*
constants
Returns true
on success.
Throws ImagickException on error.