Imagick::getImageAlphaChannel

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

Imagick::getImageAlphaChannel — Checks if the image has an alpha channel

public Imagick::getImageAlphaChannel(): bool

Returns whether the image has an alpha channel.

This function has no parameters.

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.

There are no user contributed notes for this page.