when i run this code
public function LogInn()
    {
        $email = $this->input->post('email');
        $password = $this->input->post('password');
        $this->load->model('LogIn_Model');
        $a = $this->LogIn_Model->Create_Session($email,$password);
        if($a==1)
        {
        redirect('Hadees/word');
        }
    }
give an Error in Log file
ERROR - 2018-09-06 12:39:56 --> Severity: Error --> Call to undefined function redirect()
and not redirect