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# ImageColorResolveAlpha

(PHP 4 >= 4.0.6)

ImageColorResolveAlpha -- Get the index of the specified color + alpha or its closest possible alternative

## Description

``int imagecolorresolvealpha` (resource im, int red, int green, int blue, int alpha)`

This function is guaranteed to return a color index for a requested color, either the exact color or the closest possible alternative.

See also imagecolorclosestalpha().

> Note: This function was added in PHP 4.0.6 and requires GD 2.0.1

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