Posted by lkrubner on 11/04/05 22:31

Andy Hassall wrote:
> On 4 Nov 2005 11:42:47 -0800, lkrubner@geocities.com wrote:
> >echo "<p>the height is $height and the width is $width </p>";
> >for ($i=0; $i < $width; $i++) {
> > for ($r=0; $r < $height; $r++) {
> > $rgb = imagecolorat($image, $i, $r);
> > echo $rgb;
> > echo "<br>";
> > }
> >}
> >
> >which gave me something like this:
> >
> >16645629
> >16711422
> [snip]
> >but a lot more of that.
>
> Good, that's what you asked for. All you need to do now is read the
> imagecolorat manual page a bit more closely and convert it into the hex
> representation you wanted (sprintf and %x is useful here), and you're done.

Yes, your solution was nearly perfect. I suppose to get it into hex i
do something like this:

for ($i=0; $i < $width; $i++) {
for ($r=0; $r < $height; $r++) {
$rgb = imagecolorat($image, $i, $r);
$format = "%x";
$byteCode = sprintf($format, $rgb);
$imageAsBytesAsString .= $byteCode;
}
}

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