i need some help about using sessions in code igniter

Question

I am using codeigniter. I used session variable to store a id in a function and get the stored value in another function. I have a controller file which is given below:

public function select_service($id)
    {
    $this->load->library('session');
         $this->session->unset_userdata('employee');
         $this->session->set_userdata('employee', ['total'=>$id]);
     // $id = $this->uri->segment(4);
    $data['service'] =   $this->add_service_model->get_services();  
            $data['main_content'] = 'admin/service_limitation/service_view';
        $this->load->view('includes/template', $data);  

    }

In the above code I get the id from a form and store in the session variable

public function services()
    {
    //here i need to get the session variable employee['total'] 
    $id = $this->uri->segment(5);
    $data_to_store=array('employee_id'=>$id,'service_id'=>$this->input->post("services"));
    $this->add_service_model->save($data_to_store);
    $data['addservice'] =    $this->add_service_model->get_addservices();   
            $data['main_content'] = 'admin/service_limitation/newview';
        $this->load->view('includes/template', $data);  

    }

In this function service I need to retrieve the stored value. both functions are in same controller. can some one help me with the code?

Answer 1

Manuall

1. Auto load the session library. This way the session is always loaded.

2. when setting the id do: $this->session->set_userdata('employee', $id);

3. when you want to get that id user $id = $this->session->userdata('employee');