Avoid linking of images from other sites

[Anon]

Can anybody suggest a method how I can try to save the images in my website gallery of images to be linked directly by other people's websites?

The images are JPG stored on the server. I dont wish to use any non-common PHP extension etc. Perhaps somwhow I can just hide the path where my images are stored?

Thank you.

[Anon]

Just have your image tags call a PHP script, like:

<img src="serve_pic.php?file=banner.jpg" />

Then your PHP script can check HTTP_REFERER to see if the request is coming from your site. If it is, then send the pic back. If it's not, send an error message (or something else) back.

Diego