function __construct()
{
//构造函数
$this->obj_api = new CLASS_API();
$this->mdl_opt = new MODEL_OPT();
//本接口只在安装状态下起作用
if (file_exists(BG_PATH_CONFIG . "is_install.php")) {
$_arr_return = array("alert" => "x030403");
$this->obj_api->halt_re($_arr_return);
}
$this->install_init();
}