    Imagick8b7c:f320:99b9:690f:4595:cd17:293a:c069getImageAlphaChannel (PECL imagick 2 >= 2.3.0, PECL imagick 3)
Imagick8b7c:f320:99b9:690f:4595:cd17:293a:c069getImageAlphaChannel — Checks if the image has an alpha channel   Description public Imagick8b7c:f320:99b9:690f:4595:cd17:293a:c069getImageAlphaChannel(): bool  Returns whether the image has an alpha channel.    Parameters This function has no parameters.   Return Values  Returns true if the image has an alpha channel value and false if not, i.e. the image is RGB rather than RGBA or CMYK rather than CMYKA.    Errors/Exceptions  Throws ImagickException on error.    Changelog    Version Description     imagick 3.6.0  Returns a bool now; previously, an int was returned.      


    
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