public function validate_options($plugin_options)
{
if (!empty($plugin_options['feeds_changed'])) {
if ($plugin_options['feeds_changed'] === 'all') {
FFCacheManager::clean(array('%'));
} else {
FFCacheManager::clean(explode(',', $plugin_options['feeds_changed']));
}
FFImageSizeCacheManager::clean();
}
foreach ($plugin_options as $key => $val) {
$plugin_options[$key] = trim($val);
}
$options['feeds_changed'] = '';
return $plugin_options;
}
