Drupal Views data to jqGrid ajax data mapping

gistfile1.php

<?php
function views_to_jqgrid_ajax_data($view_name){

  $result = array();

  $_GET['page'] = intval($_REQUEST['page']) > 0
    ? intval($_REQUEST['page']) - 1 : intval($_REQUEST['page']);

  $_GET['order'] = $_REQUEST['sidx'];
  $_GET['sort'] = $_REQUEST['sord'];

  $view = views_get_view($view_name, TRUE);

  if (! $view)
    return $output;

  if (isset($_REQUEST['rows']) && intval($_REQUEST['rows']) > 0) {
    $view->set_items_per_page(trim(intval($_REQUEST['rows'])));
  }

  if (isset($_REQUEST['_search']) && $_REQUEST['_search'] == 'true'){
    foreach ($_GET as $key => $value) {
      $view->exposed_input[$key] = $value;
    }

  }

  $view->execute();

  $items_per_page = $view->get_items_per_page();
  $_REQUEST['rows'] = $items_per_page;

  $field_alias = array();
  foreach ($view->display_handler->handlers['field'] as $key => $value) {
    array_push($field_alias, $value->field_alias);
  }

  $result['page'] = $_REQUEST['page'];
  $result['total'] = ceil( $view->total_rows / $items_per_page);
  $result['records'] = $view->total_rows;

  $view_result = $view->result;
  $result['rows'] = array();

  foreach ($view->result as $r) {
    $temp = array();
    $temp['id'] = $r->sid;
    $temp['cell'] = array();
    foreach ($field_alias as $alias) {
      array_push($temp['cell'], $r->{$alias});
    }
    array_push($result['rows'], $temp);
  }

  if (sizeof(module_implements('jqgird_data_alter')) > 0) {
    $result = module_invoke_all('jqgird_data_alter', $result);
  }

  echo json_encode($result);
}