(PECL imagick 2.0.0)
Imagick::setImageChannelDepth — Sets the depth of a particular image channel
$channel
, int $depth
) : boolSets the depth of a particular image channel.
channel
depth
锟缴癸拷时锟斤拷锟斤拷 TRUE
锟斤拷
锟斤拷锟斤拷时锟阶筹拷 ImagickException锟斤拷