Here is the name of the server: mail.levikolb.soisweb.uwm.edu
Here is the user agent string: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
Predefined variables, also known as superglobals, are built in variables that can be used on any php script. Can be used to get server names, user agent names, global variables, cookie data, and much more.