If you want to stay informed of updates to these scripts, I suggest you subscribe to the Sprint mailing list and have any news and notifications of code changes delivered to you.
PHP function that will connect to Sprint's Messaging Server and send a properly formatted message. This works far better than sending messages with the email method, but you will need to update the script when/if Sprint changes their messaging pages.
Want my uploader? This file contains the PHP source code that is running this uploader site. To use it, you need a PHP web server and a MySQL database. This is not software that runs on your home computer. When you download it, you get the absolutely latest version -- the zip file is created for you on the fly! Can't beat that. Apparently some browsers (IE) has issues downloading the zip file, making it look password protected. Try downloading it another way; there is no password on the zip file.
This comes with a live copy of the scripts that I have here, the administration scripts, a quick and dirty message sending page, and other things.
Older versions: