Imagick::getImageAlphaChannel
(PECL imagick 2 >= 2.3.0, PECL imagick 3)
Imagick::getImageAlphaChannel — Checks if the image has an alpha channel
Description
public Imagick::getImageAlphaChannel(): 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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