FW: Help please!

Hello, I have a PHP script which gets data from a MySQL database and returns an image. So <img src="getdata.php?id=3"> returns the image of id 3 from the database. What I really want is to state width is 100 and height is 100 for example so I do not have to downlaod the entire picture and specify the width and height as part of the image: Do not want <img src="getdata.php?id=3" width="100" height="100"> WHat I want <img src="getdata.php?id=3&width=100&height=100"> WHich will be a lot quicker on the client side. I cannot make a permanent file to use when I get the information from the PHP database due to server security, only a tmpfile which the data can then be placed. But to use the image functions you need to specify a filename. THere does not seem to be a way to get the filename of a file pointer so how do I do it please? I have asked the ISP to give me permissions to create files int he server directory but they will not let me. Thanks you! Steve