Server Name: https://lnebrat.soisweb.uwm.edu/
Current File Path: https://lnebrat.soisweb.uwm.edu/infost440/a3/predefined.php
Built-in variables called predefined variables or superglobals are available in all scopes. They provide information about the server, the client browser, and file paths, among other details. This code retrieves the script name with the built-in PHP variable $_SERVER['PHP_SELF'] to build the page address by concatenating it with the base URL.