(PHP 3>= 3.0.2, PHP 4 , PHP 5)
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().
