尝试获取CI中非对象的属性

Question

遇到PHP错误 严重程度：通知

消息：试图获取非对象的属性

文件名：controllers / Auth.php

行号：35

回溯：

文件：C：\ xampp \ htdocs \ Codeigniter \ application \ controllers \ Auth.php 行：35 功能：_error_handler

文件：C：\ xampp \ htdocs \ Codeigniter \ index.php 线：315 功能：require_once

我的代码：

enter image description here

public function login()
    {
        $this -> form_validation ->set_rules('username', 'Username', 'required');
        $this -> form_validation ->set_rules('password', 'Password', 'required|min_length[5]');

        if ($this->form_validation->run() == TRUE) {
            # code...

            $username = $_POST['username'];
            $password = $_POST['password'];

            $this->db->select('*');
            $this->db->from('login');
            $this->db->where(array('username' => $username, 'password' => $password));
            $query = $this ->db->get();

            $user = $query->row();

            if ($user->email) {

                $this->session->set_flashdata("success", "You are Successfull Logged in");

                $_SESSION['user_logged'] = TRUE;
                $_SESSION['username'] = $user->username;

                redirect("user/profile", "refresh");
            }else{

                $this->session->set_flashdata("error", "Invalid Login details");
                //redirect("auth/login", "refresh");
            }
        }
    # code...
    $this -> load ->view('login');
}