RecursiveRegexIterator example

$options['locale'] = Zend_Locale::findLocale($options['locale']);
            }
        } catch (Zend_Locale_Exception $e) {
            throw new Zend_Translate_Exception("The given Language '{$options['locale']}' does not exist", 0, $e);
        }

        $options  = $options + $this->_options;
        if (is_string($options['content']) and is_dir($options['content'])) {
            $options['content'] = realpath($options['content']);
            $prev = '';
            $iterator = new RecursiveIteratorIterator(
                new RecursiveRegexIterator(
                    new RecursiveDirectoryIterator($options['content'], RecursiveDirectoryIterator::KEY_AS_PATHNAME),
                    '/^(?!.*(\.svn|\.cvs)).*$/', RecursiveRegexIterator::MATCH
                ),
                RecursiveIteratorIterator::SELF_FIRST
            );
            
            foreach ($iterator as $directory => $info) {
                $file = $info->getFilename();
                if (is_array($options['ignore'])) {
                    foreach ($options['ignore'] as $key => $ignore) {
                        if (strpos($key, 'regex') !== false) {