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() { } } ?>
大概用法
example :
log in page : $session = session::getObject();
$session->set_ture(); // if $row['password'] ==
next page :
复制代码 代码如下:
$session = session::getObject();
if($session->get_status())
// .... the user is really
else
// ....
log out : $session = session::getObject();
$session->end_session();
由get_status()返回当前用户是否有效登录