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(PECL imagick 2 >= 2.1.0, PECL imagick 3)
Imagick::setImageAlphaChannel — Sets image alpha channel
Activate or deactivate image alpha channel. The mode
is one of the Imagick::ALPHACHANNEL_*
constants.
Diese Funktion ist verfügbar, wenn Imagick gegen die ImageMagick-Version 6.3.8 oder höher kompiliert wurde.
mode
One of the Imagick::ALPHACHANNEL_*
constants
Liefert true
bei Erfolg.
Wirft ImagickException bei Fehlern.