Also check out the PHP.NET
website for the latest functions in PHP.
I have got info out of image files when I have uploaded them with a web form file field. In php the information goes in to the $HTTP_POST_FILES variable, you can use that to extract information about the file.
There are also some functions for getting image sizes that may work with flash, it depends on the info you want to extract, e.g for image size use:
getimagesize("image_path") check php.net for more
hope this helps,
ps. the PHP and Mysql web development book is great, used it to build my website building site.
Edited by visitus, 12 August 2005 - 10:53 AM.