/**
* 构造函数，检查配置是否完成
*/
protected function __construct()
{
SimpleSession::init(null, getHash($_POST['FromUserName']));
if (!$_SESSION['wechatActivity']) {
$_SESSION['wechatActivity'] = null;
}
if (!$_SESSION['callbackStack']) {
$_SESSION['callbackStack'] = null;
}
$this->activity =& $_SESSION['wechatActivity'];
$this->callbackStack =& $_SESSION['callbackStack'];
$this->token = getConfig("wechat", "token");
$this->appInfo =& getAppInfo();
}
/**
* 释放当前类
*/
public static function release()
{
session_unset();
session_destroy();
self::$selfObject = null;
}