(PECL gmagick >= Unknown)
Gmagick::getimagematte — Check if the image has a matte channel
public Gmagick::getimagematte ( ) : int
Returns true if the image has a matte channel, otherwise false.
This function has no parameters.
Returns true if the image has a matte channel, otherwise false.
Throws an GmagickException on error.
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https://www.php.net/manual/en/gmagick.getimagematte.php