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ImagickPixel::getColorQuantum is a method in the PHP Imagick extension that returns the quantum value of a color channel at a specific offset.

In the Imagick extension, an ImagickPixel represents a color and its associated channels (red, green, blue, alpha). Each channel typically has a range of 0 to the maximum value, which is determined by the quantum range of the Pixie library used by Imagick.

The getColorQuantum method allows you to retrieve the quantum value for a specific channel of the ImagickPixel object. This can be useful when you need to access or manipulate individual color channels directly.

Here's an example of its usage:

php
$pixel = new ImagickPixel('#FF0000');
$redQuantum = $pixel->getColorQuantum(Imagick::COLOR_RED);


In the above example, we create an ImagickPixel object representing the color red (#FF0000). We then use the getColorQuantum method to retrieve the quantum value of the red channel. The Imagick::COLOR_RED constant is used to indicate which channel to retrieve the value from.

Note: The getColorQuantum method returns the quantum value, not the actual color value. To convert the quantum value to the actual color value, you can use the scaleQuantumToQuantumRange method of the Imagick class.

I hope this helps! Let me know if you have any further questions.