Drupal cache clear

<?PHP     
      require_once DRUPAL_ROOT. '/includes/bootstrap.inc';
      drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);

      // Change query-strings on css/js files to enforce reload for all users
      _drupal_flush_css_js();

      drupal_clear_css_cache();
      drupal_clear_js_cache();

      // Ordered so clearing the page cache will always be the last action.
      $core = array(
        'cache', 'cache_admin_menu', 'cache_path', 'cache_block', 'cache_field', 
        'cache_filter', 'cache_form', 'cache_bootstrap', 'cache_image', 'cache_l10n_update', 
        'cache_libraries', 'cache_menu', 'cache_path', 'cache_path_breadcrumbs', 'cache_rules',
        'cache_token', 'cache_update', 'cache_views', 'cache_views_data'
      );
      $cache_tables = array_merge(module_invoke_all('flush_caches'), $core);
      foreach ($cache_tables as $table) {
        cache_clear_all('*', $table, TRUE);
      }