redirect a user after login to a specific page

login-redirect-drupal.php

<?php
/**
* Implements hook_user_login().
*/
function mymodule_user_login(&$edit, $account) {
  $current_path = drupal_get_path_alias($_GET['q']);

  // If the user is logging in from the 'example' page, redirect to front.
  if ($current_path == 'example') {
    $_GET['destination'] = '<front>';
  }
}
?>