retrieve information about the computer
Fri Mar 10 2023 12:25:21 GMT+0000 (Coordinated Universal Time)
$_SERVER['REMOTE_ADDR']: This returns the IP address of the client that is accessing the web page. $_SERVER['HTTP_USER_AGENT']: This returns the user agent string, which contains information about the client's browser and operating system. $_SERVER['HTTP_REFERER']: This returns the URL of the page that referred the client to the current page (if any). $_SERVER['HTTP_ACCEPT_LANGUAGE']: This returns the preferred language(s) of the client, as specified in the Accept-Language header of the HTTP request.