Auto Complete Part - 2

<?php
class controllerku extends CI_Controller {
public function autocomplete(){
$this->load->model('modvsiswa');
$q = $_REQUEST['term'];
$cn = new modvsiswa();
$data = $cn->siswaPerpusUnregister($q);
$count = count($data);
$jumlah = 0;
$jumlah = ($count > 0 ? '' : '');
$response = array();
foreach ($data as $val => $r){
array_push($response, array("id"=>$r['nis'],"label"=>$r['nis']." = ".$r['nama'],"value"=>$r['nis']));
}
echo json_encode($response);
}
}