session_php.php 程式修改

1. 取得用戶名稱，改取用戶的 firstname。

   [root@moodle mod_tmp]# diff -urNwbBE mrbs/web/session_php.php ../blocks/mrbs/web/session_php.php
   --- mrbs/web/session_php.php	2012-10-21 19:24:42.000000000 +0800
   +++ ../blocks/mrbs/web/session_php.php	2013-02-24 16:24:44.000000000 +0800
   @@ -112,7 +112,8 @@
    
    function getUserName()
    { global $USER;
   -   return $USER->username;
   +   return $USER->firstname; //dywang
    /*
        if (isset($_SESSION) && isset($_SESSION["UserName"]) && ($_SESSION["UserName"] != ""))
        {