代码如下: 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 : 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