$_SESSION运行时赋值失败，但debug单步调试却成功运行。

       $_SESSION['active_code']['id']=$user_id;        $_SESSION['active_code']['name']=$user['user_name'];        $_SESSION['active_code']['email']=$user['email'];

       $_SESSION['test']='testvv';        $_SESSION['test']['11']='11testvv';        $_SESSION['active_code']['id']=$user_id;        $_SESSION['active_code']['name']=$user['user_name'];        $_SESSION['active_code']['email']=$user['email'];        $_SESSION['active_code']['key']=$this->md5s($user['email'].$user['passwd']);        $this->logs(var_export($_SESSION['active_code'],true));        $this->logs(var_export($_SESSION,true));