(PECL imagick 2.0.0)
Imagick::getImageChannelDepth — Gets the depth for a particular image channel
$channel
) : intGets the depth for a particular image channel.
channel
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channel constants using bitwise operators. 缺省为Imagick::CHANNEL_DEFAULT
.
参考此 通道常数列表
成功时返回 TRUE
。