/**
 * 常用session操作，包含读取，写入，销毁
 *
 * @param 
 * @arrange (512.笔记) jb51.cc
 **/
class Session
{
 function Session()
 {
  session_start();
 }
 
 function set($name,$value)
 {
  $_SESSION[$name] = $value;
 }
 
 function get($name)
 {
  if(isset($_SESSION[$name]))
   return $_SESSION[$name];
  else
   return false;
 }
 
 function del($name)
 {
  unset($_SESSION[$name]);
 }
 
 function destroy()
 {
  $_SESSION = array();
  session_destroy();
 }
 
 function save_prefs()
 {
  global $db,$auth;
  $prefs = serialize($this->prefs);
  $db->query("UPDATE condra_users SET prefs = '$prefs' WHERE id = '{$auth->id}'");
 }
}


/***   来自编程之家 jb51.cc（jb51.cc）   ***/