(PECL imagick 2 >= 2.3.0, PECL imagick 3)
ImagickPixel::getIndex — Gets the colormap index of the pixel wand
public ImagickPixel::getIndex(): int
Gets the colormap index of the pixel wand.
This function has no parameters.
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https://www.php.net/manual/en/imagickpixel.getindex.php