$_SERVER

    $_SERVER['PHP_SELF'];
    

    $_SERVER['SERVER_NAME'];
    

    $_SERVER['HTTP_HOST'];
    

    $_SERVER['HTTP_REFERER'];
    

    $_SERVER['HTTP_USER_AGENT'];
    

    $_SERVER['SCRIPT_NAME'];
    

    $_SERVER['GATEWAY_INTERFACE'];
    

    $_SERVER['SERVER_ADDR'];
    

    $_SERVER['SERVER_NAME'];
    

    $_SERVER['SERVER_SOFTWARE'];
    

    $_SERVER['SERVER_PROTOCOL'];
    

    $_SERVER['REQUEST_METHOD'];
    

    $_SERVER['REQUEST_TIME'];
    

    $_SERVER['QUERY_STRING'];
    

    $_SERVER['HTTP_ACCEPT'];
    

    $_SERVER['HTTP_ACCEPT_CHARSET'];
    

    $_SERVER['HTTP_HOST'];
    

    $_SERVER['HTTP_REFERER'];
    

    $_SERVER['HTTPS'];
    

    $_SERVER['REMOTE_ADDR'];
    

    $_SERVER['REMOTE_HOST'];
    

    $_SERVER['REMOTE_PORT'];
    

    $_SERVER['SCRIPT_FILENAME'];
    

    $_SERVER['SERVER_ADMIN'];
    

    $_SERVER['SERVER_PORT'];
    

    $_SERVER['SERVER_SIGNATURE'];
    

    $_SERVER['PATH_TRANSLATED'];
    

    $_SERVER['SCRIPT_NAME'];
    

    $_SERVER['SCRIPT_URI'];