force browser to reload image

Anon

I have made a graph with the gd-library. Each time the page is loaded an image is created and saved and the loaded to the page. I am doing it this way because php can't create an image and display other content at the same time. But I have a problem... some browser are set to automatically detect "new" page. Those browsers won't load a new picture (the picture has the same name) if you don't press control and reload. I tried using this:

Doesn't work..

I am searching for one of the following solutions;

Find the right information to place in the headers
I someway change the attributes (not the name) so that the browser reloads it
Make a random name of the picture and then delete it.

Any suggestions?

vfwood

header ("Expires: Mon, 01 Jan 2001 " . date("H:i:s") . " GMT");
// Date in the past,

header ("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
// always modified

// HTTP/1.1
header ("Cache-Control: no-cache, must-revalidate");

// HTTP/1.0
header("Pragma: no-cache");

mrdance

Thanks, but it didn't update the picture, instead I used these lines to "temporary" solve it;

exec("del *.png");

creating image...

$slump=rand (1,9999);
imagepng($image,"/temp/month$slump.png");
copy ("/temp/month$slump.png","month$slump.png");
?>
<IMG src=month<? echo $slump; ?>.png>

Anon

Doesn't NOSAVE work?

Shouldn't cache the image.

Anon

I hope it could be helpful

I am doing similar stuff like you. I can update a new image and display it properly.

I stored the image as binary into the database.

I used

header("Expires: Mon, 26 Jul 1998 05:00:00 GMT");
header("Cache-Control: no cache, must-revalidate");
header("Pragma: no-cache");

<img src='getimage.php?id=$number'>
getimage.php is getting image from the database.