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Imagick::getImageAlphaChannel — 锟斤拷取图锟斤拷锟� alpha 通锟斤拷
锟斤拷取图锟斤拷锟絘lpha通锟斤拷值锟斤拷为锟斤拷锟铰筹拷锟斤拷之一 alpha channel constants. 锟剿凤拷锟斤拷锟斤拷Imagick锟斤拷锟斤拷ImageMagick 6.4.0锟斤拷锟较版本锟斤拷锟斤拷时锟斤拷锟矫★拷
锟斤拷锟截碉拷前图锟斤拷锟絘lpha通锟斤拷值锟斤拷锟斤拷值锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟矫参匡拷锟斤拷锟斤拷锟叫憋拷 alpha channel constants.
锟斤拷锟斤拷时锟阶筹拷 ImagickException锟斤拷