Controller

public function addNewUser() {

		 $config['upload_path'] = '/uploads/';
         $config['allowed_types'] = 'gif|jpg|png|jpeg';
         $this->load->library('upload', $config);
         $this->upload->do_upload('profilepic');
         $data_upload_files = $this->upload->data();
         $image = $data_upload_files[full_path];

		$fname = $this->input->post('txtfname');
		$mname = $this->input->post('txtmname');
		$lname = $this->input->post('txtlname');
		$email = $this->input->post('txtemail');
		$user = $this->input->post('txtuser');
		$pass = $this->input->post('txtpass');
		$position = $this->input->post('txtposition');
		$schoolID = $this->input->post('txtschoolID');

		$this->model->addNewUser($fname, $mname, $lname, $email, $user, $pass, $position, $schoolID, $image);

		$data = array(
			'success' => 1
		);

		generate_json($data);
	}