Submit/View images using PHP/MySQL

Hi, Can anyone point me to some good examples of how to add images using PHP 4 (from within a browser) to a MySQL database running on MacOSX, which is already configured & working, then display the images by selecting their name or category etc, again within the browser. I also need to restrict the size of the file upload to approx 300kb I found a good example at http://www.weberdev.com but it's a little too cut-down for me! Thanks Mike C --