Image upload

I have a small application that ran on one server and now gives me a problem with uploading images on a new server. I am running PHP 4.4.4 now on this server and hoping it is just something that needs adjusted in php.ini, but cannot seem to find. The file is posted as a file fields in a multipart/form-data form, the application tests the file with getimagesize() shown below. I am getting the die response in the browser. I tried echo of the file and it prints a random file name under the /tmp directory on this CentOS Linux system. If I sleep for 10 seconds, the file gets created and gone after the script finishes. Can someone suggest what my problem may be? if (!getimagesize($_FILES['filPhoto']['tmp_name'])) { die('The file you are attempting to upload is not an image file.'); } else { <snip> -- Robert