文字
Gmagick::setimagechanneldepth
(PECL gmagick >= Unknown)
Gmagick::setimagechanneldepth — Sets the depth of a particular image channel
说明
public Gmagick Gmagick::setimagechanneldepth
( int
$channel
, int $depth
)Sets the depth of a particular image channel.
参数
-
channel -
Identify which channel to extract: RedChannel, GreenChannel, BlueChannel, OpacityChannel, CyanChannel, MagentaChannel, YellowChannel, BlackChannel.
-
depth -
The image depth in bits.
返回值
The Gmagick object on success
错误／异常
错误时抛出 GmagickException。