Form submission handler for filter_admin_overview().
function filter_admin_overview_submit($form, &$form_state) {
$filter_formats = filter_formats();
foreach ($form_state['values']['formats'] as $id => $data) {
// Only update if this is a form element with weight.
if (is_array($data) && isset($data['weight'])) {
$filter_formats[$id]
->set('weight', $data['weight']);
$filter_formats[$id]
->save();
}
}
filter_formats_reset();
drupal_set_message(t('The text format ordering has been saved.'));
}