(PECL imagick 2.0.0)
Imagick::setImageDepth — Sets the image depth
$depth
Sets the image depth.
depth
锟缴癸拷时锟斤拷锟斤拷 TRUE锟斤拷
TRUE
锟斤拷锟斤拷时锟阶筹拷 ImagickException锟斤拷