Forcing browser to download new copy of image

Hi,

I am having a website where depending on the the action of the user the images changes on the page load.

Now the image url stays the same as I use php to manipulate the image. Because the image is already cached the browser does not download it again.

How can I tell the browser to download the image again?

Thanks

 

never mind. sorted it

This is the trick

<a href="image.png?<? echo time(); ?>" />

Code (markup):

 

Stephan,

You can try to make the url dynamic attaching query string something like..
img src=xxx.php?t=".time()

or send headers to ask the browser not to cache..

header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("cache-Control: no-store, no-cache, must-revalidate");
header("cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");

 

I'd personally use the headers myveed posted above to achieve that. You can also do that using .htaccess.