   #PHP Manual Image functions imagecolorresolve imagecolorset

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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 image, 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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