代码如下:
- <?php
- class session
- {
- static $sessionObject;
- /* $_SESSION['user'] == 0 , don't work .
- * == 1 , he is really user .
- */
- private function __construct()
- {
- if(! ( isset($_SESSION['user']) && $_SESSION['user']==0 ))
- session_set_cookie_params(3600);
- session_start(); //Initialize14 }15 private function __clone()
- {
- }
- public static function getObject()
- {
- if(! self::$sessionObject instanceof self)
- $sessionObject = new session() ;
- return $sessionObject;
- }
- public function set_false()
- {
- $_SESSION['user'] = 0 ; // for PHP>=5
- }
- public function set_true()
- {
- if( isset($_SESSION['user']) )
- $_SESSION['user'] = 1 ;
- else
- $this->error();
- }
- public function get_status()
- {
- return $_SESSION['user'];
- }
- public function end_session()
- {
- session_destroy();
- }
- public function error()
- {
- }
- }
- ?>
复制代码
大概用法
example :
- log in page : $session = session::getObject();
- $session->set_ture(); // if $row['password'] ==
复制代码
next page :
代码如下:
- $session = session::getObject();
- if($session->get_status())
- // .... the user is really
- else
- // ....
- log out : $session = session::getObject();
- $session->end_session();
复制代码
由get_status()返回当前用户是否有效登录
|