controller

public function update($id)

{
 print_r($_POST);

    $info = $this->input->post('info');
    $tanggal = $this->input->post('tanggal');
    $status = $this->input->post('status');

    $data = array(
        'info' => $info,
        'tanggal' => $tanggal,
        'status' => $status
    );

    $where = array(
        'info' => $info
    );

    $this->Admin_model->updateData($where,$data,'tb_informasi');
    //redirect('admin/pengumuman');
}