how do i turn this into a variable?

when i upload files they are saved with a temp_name in unix time format. My variable $newname="images/".$image_name; lets me display the picture by echoing $newname on the same page but how can I echo this image on different pages? I am unable to do it through sessions. If there is no way to echo it on different pages, how can I display the last file uploaded to my directory in a session?

This looks like perl or PHP, not C++.

Moved to tech, until the OP can clarify what it is they're trying to do.

Reading this might help them formulate a half-decent post.