(PHP 4, PHP 5)
imagecolorexact — Get the index of the specified color
Returns the index of the specified color in the palette of the image.
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.
O resursă - imagine, întoarsă de una din funcţiile de creare a imaginilor, cum ar fi imagecreatetruecolor().
Value of red component
Value of green component
Value of blue component
Returns the index of the specified color in the palette, or -1 if the color does not exist.