<?php
        // Base navigation.
        $configPath = APPLICATION_PATH . '/configs/navigation/admin/';
        $config = new \Zend_Config_Xml($configPath . 'base.xml', 'navigation', true);

        // Create base navigation.
        $navigation = new \Zend_Navigation($config);

        // Module navigations.
        $iterator = new \DirectoryIterator($configPath);
        while ($iterator->valid())
        {
            if ($iterator->getFilename() == '.'
               || $iterator->getFilename() == '..'
               || $iterator->getFilename() == 'base.xml') {
                $iterator->next();
                continue;
            }

            // Create new module navigation.
            $moduleConfig = new \Zend_Config_Xml($configPath . $iterator->getFilename(), 'navigation', true);

            // Add module pages to base navigation.
            $navigation->addPages($moduleConfig);

            $iterator->next();
        }