private function removeValue(&$array, $key)
{
$keys = explode('.', $key);
while (count($keys) > 1) {
$key = array_shift($keys);
if (!isset($array[$key]) || !is_array($array[$key])) {
return;
}
$array =& $array[$key];
}
unset($array[array_shift($keys)]);
}