public function add($parentexpr, $value, $name = "")
{
$get = $this->get($parentexpr);
if ($parents =& $get) {
foreach ($parents as &$parent) {
$parent = is_array($parent) ? $parent : array();
if ($name != "") {
$parent[$name] = $value;
} else {
$parent[] = $value;
}
}
return true;
}
return false;
}