> I have this code in a php script, which takes all pixels from a PNG image
> and produces a second "image"
> with random numbers in HTML format this time. (an example can be found at
> http://www.cyprusnews.org/sub/prog2.php).
>
> Instead of getting ALL shades of red from the pallette, I get only 8-9
> shades: those corresponding to
> values of red with R value 0,51,102,153,204,255.
Those are the values of the infamous Netscape 216 "web-safe" colors...
Check the docs for anything about 216 or "web-safe"
> Anyone can explain that?
>
> Here's the code:
>
> $im = imagecreatefrompng("vac3.png");
> $dimx = imagesx($im);
> $dimy = imagesy($im);
>
> for ($f=0; $f<$dimy; $f+=5) {
> for ($i=0; $i<$dimx; $i+=5) {
> $colsat = imagecolorat($im,$i,$f);
> $colss = imagecolorsforindex($im,$colsat);
> $r = dechex($colss[red]);
> $g = dechex($colss[green]);
> $b = dechex($colss[blue]);
> if ($colss[red] < 16) $r = "0" . $r; // assure that 13 becomes #0D and
> not D
> if ($colss[green] < 16) $g = "0" . $g;
> if ($colss[blue] < 16) $b = "0" . $b;
> $rndn = rand(0,9);
> echo "<font color=#".$r.$g.$b.">".$rndn."0";
> }
> echo "<br>";
> }
> ImageDestroy($im);
>
>
> thanks
>
> subbie
>
>
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