(PECL imagick 2 >= 2.3.0, PECL imagick 3)

Imagick::getImageAlphaChannelChecks if the image has an alpha channel


public Imagick::getImageAlphaChannel(): bool

Returns whether the image has an alpha channel.


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.


Throws ImagickException on error.


Version Description
imagick 3.6.0 Returns a bool now; previously, an int was returned.
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