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<Imagick::setImageImagick::setImageArtifact>
^ImagickLast updated: Mon, 26 Oct 2026

Imagick::setImageAlphaChannel

(PECL imagick 2 >= 2.1.0, PECL imagick 3)

Imagick::setImageAlphaChannel — Sets image alpha channel

Description

public function Imagick::setImageAlphaChannel(int $mode): bool

Activate or deactivate image alpha channel. The mode is one of the Imagick::ALPHACHANNEL_* constants. This method is available if Imagick has been compiled against ImageMagick version 6.3.8 or newer.

Parameters

mode

One of the Imagick::ALPHACHANNEL_* constants

Return Values

Returns true on success.

Errors/Exceptions

Throws ImagickException on error.

See Also


<Imagick::setImageImagick::setImageArtifact>
^ImagickLast updated: Mon, 26 Oct 2026