Imagick::getImageAlphaChannel
Checks if the image has an alpha channel
Description
public bool Imagick::getImageAlphaChannel()
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.