Description
int
imagecolorexact ( resource image, int red, int green, int blue )
Returns the index of the specified color in the palette of the
image.
If the color does not exist in the image's palette, -1 is
returned.
If you created the image from a file, only colors used in the image are
resolved. Colors present only in the pallete are not resolved.
See also imagecolorclosest().
