Gmagick
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Gmagick::setimagechanneldepth

(PECL gmagick >= Unknown)

Gmagick::setimagechanneldepthSets 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


Gmagick
PHP 手册