PHP $_SERVER superglobal

PHP $_SERVER
  • $_SERVER is a PHP superglobal variable that can hold information about headers, paths, and code locations.


  • example
  • <?php
    echo $_SERVER['PHP_SELF']."<br>";
    echo $_SERVER['SERVER_NAME']."<br>";
    echo $_SERVER['HTTP_USER_AGENT']."<br>";
    echo $_SERVER['HTTP_HOST']."<br>";
    echo $_SERVER['SCRIPT_NAME']."<br>";
    ?>

    Output:

    Display all your script server data
    $_SERVER elements list
    Function Description
    $_SERVER['PHP_SELF'] Returns the filename of the currently executing script
    $_SERVER['GATEWAY_INTERFACE'] Returns the version of the Common Gateway Interface (CGI) the server is using
    $_SERVER['SERVER_ADDR'] Returns the IP address of the host server
    $_SERVER['SERVER_NAME'] Returns the name of the host server
    $_SERVER['SERVER_SOFTWARE'] Returns the server identification string
    $_SERVER['SERVER_PROTOCOL'] Returns the name and revision of the information protocol
    $_SERVER['REQUEST_METHOD'] Returns the request method used to access the page
    $_SERVER['REQUEST_TIME'] Returns the timestamp of the start of the request
    $_SERVER['QUERY_STRING'] Returns the query string if the page is accessed via a query string
    $_SERVER['HTTP_ACCEPT'] Returns the Accept header from the current request
    $_SERVER['HTTP_ACCEPT_CHARSET'] Returns the Accept_Charset header from the current request
    $_SERVER['HTTP_HOST'] Returns the Host header from the current request
    $_SERVER['HTTP_REFERER'] Returns the complete URL of the current page
    $_SERVER['HTTPS'] Is the script queried through a secure HTTP protocol
    $_SERVER['REMOTE_ADDR'] Returns the IP address from where the user is viewing the current page
    $_SERVER['REMOTE_HOST'] Returns the Host name from where the user is viewing the current page
    $_SERVER['REMOTE_PORT'] Returns the port being used on the user's machine to communicate with the web server
    $_SERVER['SCRIPT_FILENAME'] Returns the absolute pathname of the currently executing script
    $_SERVER['SERVER_ADMIN'] Returns the value given to the SERVER_ADMIN directive in the web server configuration file
    $_SERVER['SERVER_PORT'] Returns the port on the server machine being used by the web server for communication
    $_SERVER['SERVER_SIGNATURE'] Returns the server version and virtual host name which are added to server-generated pages
    $_SERVER['PATH_TRANSLATED'] Returns the file system based path to the current script
    $_SERVER['SCRIPT_NAME'] Returns the path of the current script
    $_SERVER['SCRIPT_URI'] Returns the URI of the current page