How do I empty Drupal Cache (without Devel)

Question

How do I empty the Drupal caches:

• without the Devel module
• without running some PHP Statement in a new node etc.
• without going i

Answer 1

The following module creates a menu item that is accessible only to users with the permission "flush cache", which this module makes available on the regular user permissions page.

/**
 * Implementation of hook_menu()
 */
function flush_cache_menu() {
  $items = array();

  $items['flush-cache'] = array(
  'type' => MENU_NORMAL_ITEM,
  'title' => t('Flush the cache'),
  'description' => 'Flush all website caches to make sure it updates to relect '.
    'your recent changes.',
  'page callback' => 'flush_cache_custom_callback',
  'access callback' => user_access('flush cache'),
  );

  return $items;
}

/**
 * Implementation of hook_perm()
 */
function flush_cache_perm() {
  return array('flush cache');
}

/**
 * Function that flushes the cache
 */
function flush_cache_custom_callback() {
  drupal_flush_all_caches();
  return 'Caches were flushed.';
}