Question

我想在Code Igniter的set_userdata（）函数中添加数据库中的用户数据，但我的代码无效。当我显示userdata（）时，数据库中的所有字段都没有显示。你能查一下错了吗？这里的新闻代码点燃：（

 if($this->form_validation->run()){
            $this->load->model('model_users');
            $userinfo=$this->model_users->get_user_info();
            $data = array(
                'empID' => $userinfo->empID,
                'email' => $userinfo->email,
                'emp_name' => $userinfo->emp_name,
                'address' => $userinfo->address,
                'position' => $userinfo->position,
                'usertype' => $userinfo->usertype,
                'is_logged_in' => 1
            );
            $this->session->set_userdata($data);
            redirect('main/home');
        } else{
            $this->login();
        }

这是模型中的代码

 public function can_log_in(){
    $this->db->where('email', $this->input->post('email'));
    $this->db->where('password', md5($this->input->post('password')));

    $query = $this->db->get('employee');
    if($query->num_rows() == 1){
        return true;
    } else {
        return false;
    }
}

public function get_user_info(){
     $query = $this->db->get_where('employee',array('email'=> $this->input->post('email'),'password'=> md5($this->input->post('password'))));
       foreach ($query->result() as $userinfo)
            {
               echo $userinfo->empID;
               echo $userinfo->email;
               echo $userinfo->emp_name;
               echo $userinfo->address;
               echo $userinfo->position;
               echo $userinfo->usertype;
            }
        return $userinfo;
}

Answer 1

如果您从查询中获取任何行，则需要从模型中传递$query->result。 afterforech循环变量$userinfo为空，因此返回nothig

<强>模型

function get_user_info(){
     $query = $this->db->get_where('employee',array('email'=> $this->input->post('email'),'password'=> md5($this->input->post('password'))));
     $num = $query->num_rows();
     if($num>0){
       return $query->result();
     }else{
          return FALSE;
     }

这里使用foreach循环来提取值

<强>控制器

$user=$this->model_users->get_user_info();
if(!empty($user)){
      foreach($user as $userinfo){
            $data = array(
                'empID' => $userinfo->empID,
                'email' => $userinfo->email,
                'emp_name' => $userinfo->emp_name,
                'address' => $userinfo->address,
                'position' => $userinfo->position,
                'usertype' => $userinfo->usertype,
                'is_logged_in' => 1
            );
}
    $this->session->set_userdata($data);
}

<强>更新

<强> MODEL

function get_user_info() {
    $this->db->select('*');
    $this->db->from('employee');
    $this->db->where('email',$this->input->post('email'));
    $this->db->where('password',md5($this->input->post('password')));
    $query=$this->db->get();
     $num = $query->num_rows();
     if($num>0){
       return $query->row();
     }else{
          return FALSE;
     }
}

<强>控制器

$user=$this->model_users->get_user_info();
    if(!empty($user)){
                $data = array(
                    'empID' => $userinfo->empID,
                    'email' => $userinfo->email,
                    'emp_name' => $userinfo->emp_name,
                    'address' => $userinfo->address,
                    'position' => $userinfo->position,
                    'usertype' => $userinfo->usertype,
                    'is_logged_in' => 1
                );

        $this->session->set_userdata($data);
    }

Answer 2

尝试创建一个新数组，而不是存储在$ data中。

 $sess_array = array();
            $sess_array = array(
                'id'          => $user_info->admin_id,
                'username'    => $user_info->username,
                'password'    => $user_info->password,
                'last_name'   => $user_info->last_name,
                'first_name'  => $user_info->first_name,
                'profile_img' => $user_info->img,
            );

            $this->session->set_userdata('logged_in', $sess_array);

然后你可以这么称呼 -

$sess_data = $this->session->userdata('logged_in');
echo $sess_data['profile_img']; //This holds the result similarly other values.

在Code Igniter中的set_userdata函数中添加数据库中的所有数据

2 个答案: