   #PHP Manual Image functions imagecolormatch imagecolorresolvealpha

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                               imagecolorresolve

   (PHP 3>= 3.0.2, PHP 4 )
   imagecolorresolve --  Get the index of the specified color or its
   closest possible alternative

Description

   int imagecolorresolve ( resource image, int red, int green, int blue)

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

   See also imagecolorclosest().
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