Php 注销销毁代码点火器,php,codeigniter,session,logout,destroy,Php,Codeigniter,Session,Logout,Destroy,为什么我不能在注销时销毁会话 我的身份验证控制器 public function index(){ $this->data['page_title'] = "User Login"; $this->load->view('templates/master', $this->data); } public function login(){ $username = $_POST['username']; $password = $_POST