致命错误：在第43行的C：\ xampp \ htdocs \ TugasWeb2 \ application \ controllers \ login.php中的非对象上调用成员函数check_user（）

Question

我的代码有什么问题？

$count=$this->db_ecommerce->check_user($user, $pswd)->num_rows(); <-- this line 43

---

        $user=$this->input->post('username');
        $pswd=$this->input->post('password').$this->config->item("key_login");
        //$pswd=$this->input->post('password');
        $count=$this->db_ecommerce->check_user($user, $pswd)->num_rows();
        if($count>0) {
            $this->session->set_flashdata('status_login', 'ok');
            redirect('member');

Answer 1

假设您已经有一个名为db_ecommerce的模型，您应该尝试加载它：

$this->load->model('db_ecommerce');
$count=$this->db_ecommerce->check_use ...

Answer 2

在获得num_rows（）之前，您应该检查是否有任何结果：

 $count = $this->db_ecommerce->check_user($user,$pswd);
 if($count){
     $count = $count->num_rows();
 }
 else{
     $count = 0;
 }