creating fig on the fly

dominant

Hi all

I have a web page and i want to create some gif on the fly

Is that possbile?
Any good technik?

leatherback

Yes it is possible.

Have a look at the gd library

Realize that one script can only output one type of product (e.g., a web-page, an image). In order to create an image, you need a script that outputs the image-information, and use it in your main document as a normal image:

dominant

Well, what bothers me is that some could see the GET variable like
imgID, couldn't he?

leatherback

<s>he could. Easy workaround:
Store the ID in a session instead

dominant

the following code

$image1="http://server/file2.php?text=$result[email]";
$image=ImageCreateFromPng($image1);
imagepng($image);
imagedestroy($image);

output the content of the PNG file. Actually, i want the image not the content.

leatherback

?? What do you mean? Do you want to save the image? Or do you want to display it online? For display online, you use the php-code generating the image stream as an image source on your page.

dominant

i want to display it online, i tried that with no success

leatherback

dominant wrote:
i want to display it online, i tried that with no success

What do you mean with this? What sort of errors did you get? Did you try first by just calling the script from th ecommand line? This would result in a picture in your browser, or an error code. If it fails in a page you do not get much helpfull information.

you did set the headers to image right?

header("Content-type: image/png");

dominant

Finally, i was forced to write the output in a file and then display it on a browser

scrupul0us

i think with some looking around youll find that doing that is unnecessary and a waste of resources