Demonstrating $_SERVER usage

Server Side Values

SERVER_NAME: www.etcs.pfw.edu
SERVER_SOFTWARE: Apache/2.4.6 () OpenSSL/1.0.2k-fips PHP/7.2.34
SERVER_ADDR: 128.210.209.190

Headers from the client

REMOTE_ADDR: 216.73.216.153
HTTP_USER_AGENT: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
HTTP_REFERER: