statistics.php

<?php

/**
 * @file
 * Handles counts of node views via AJAX with minimal bootstrap.
 */

// Change the directory to the Drupal root.
chdir('../../..');

/**
* Root directory of Drupal installation.
*/
define('DRUPAL_ROOT', getcwd());
include_once DRUPAL_ROOT . '/core/includes/bootstrap.inc';
drupal_bootstrap(DRUPAL_BOOTSTRAP_VARIABLES);
if (config('statistics.settings')
  ->get('count_content_views')) {
  $nid = filter_input(INPUT_POST, 'nid', FILTER_VALIDATE_INT);
  if ($nid) {
    db_merge('node_counter')
      ->key(array(
      'nid' => $nid,
    ))
      ->fields(array(
      'daycount' => 1,
      'totalcount' => 1,
      'timestamp' => REQUEST_TIME,
    ))
      ->expression('daycount', 'daycount + 1')
      ->expression('totalcount', 'totalcount + 1')
      ->execute();
  }
}