function __construct()
{
//构造函数
$this->obj_api = new CLASS_API();
$this->obj_api->chk_install();
$this->log = $this->obj_api->log;
//初始化 AJAX 基对象
$this->obj_crypt = new CLASS_CRYPT();
$this->obj_sign = new CLASS_SIGN();
$this->mdl_user = new MODEL_USER();
//设置管理组模型
$this->mdl_app = new MODEL_APP();
//设置管理组模型
$this->mdl_belong = new MODEL_BELONG();
$this->mdl_log = new MODEL_LOG();
//设置管理员模型
}