Configuration-Array accessable via dot syntax

gistfile1.php

<?php

class Configuration extends \CConfiguration
{

    /**
     * usage: $configuration->get('contact.person.firstname');
     */
    public function get($path, $default = null)
    {
        $current = $this;

        $p = strtok($path, '.');

        while ($p !== false) {
            if (!isset($current[$p])) {
                return $default;
            }
            $current = $current[$p];
            $p = strtok('.');
        }

        return $current;
    }

}