PHP Manual
Gmagick
Sets the depth of a particular image channel

Gmagick::setimagechanneldepth

(PECL gmagick >= Unknown)

Gmagick::setimagechanneldepth — Sets the depth of a particular image channel

说明

public Gmagick::setimagechanneldepth ( int $channel , int $depth ) : Gmagick

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。

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