public function write_user_data_to_file_post() { $user_ids = $this->input->post('userIds'); // [1, 2, 3] $branch_id = $this->input->post('branchId'); $file_path = $this->input->post('filePath'); $users_repo = new Users_Repository($this->base_model->get_db_instance()); $enc = new Encryption(); $file_size = file_put_contents($file_path, $enc->encrypt($users_repo->to_json($user_ids, $branch_id))); echo $file_size; }