(PECL imagick 2, PECL imagick 3)
Imagick::setImageMatteColor — Sets the image matte color
This function has been DEPRECATED as of Imagick 3.4.4. Relying on this function is highly discouraged.
public Imagick::setImageMatteColor ( mixed $matte ) : bool
Sets the image matte color.
matte
 Returns true on success. 
Throws ImagickException on error.
| Version | Description | 
|---|---|
| PECL imagick 2.1.0 | Now allows a string representing the color as the parameter. Previous versions allow only an ImagickPixel object. | 
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    https://www.php.net/manual/en/imagick.setimagemattecolor.php