59272 Reverse License System

I require a reverse license system to include into PHP scripts. The code will be encrypted at a later time and is not require for this project. The importance of this project is that it work on all platforms. In terms of reverse licensing. I need a system that instead of checking to see if a domain/ip is licensed to use a script, it will check to see if a domain/IP is NOT allowed to use a script. What I need to be able to do, is login to an admin area and enter/modify banned domains/IP's. It is important that it check to see if the referring domain is in the database: [login to view URL] the domain IS in the database then the script will exit and display an message that the script is not authorized for use on that domain/IP. 2. If the domain is not in the database, the script will run as normal. 3. If the server cannot be reached, the script will run as normal. I am not interested is typical license systems. I currently have a system with admin I built that I can provide if it is easier to fix that uses fopen() but fopen() it is not connecting to the server correctly.