Xml 如何将索引[0]添加到和对象

我有以下目标（如下）：

如何在[“NewOrder”]对象之后添加索引[0]，使其看起来像这样：

object(stdClass)#49 (1) {
["NewOrder"] => array(1) {
[0] => object(stdClass)#50 (12) {

我之所以需要这样做，是因为有时它只有一个顺序，有时它会有多个。如果只有一个，它将在for-each循环中失败

if (!is_array($this->view->Orders->NewOrder)) {
            $this->view->Orders->NewOrder = array($this->view->Orders->NewOrder);
    Zend_Debug::dump($this->view->Orders->NewOrder);
        }   

if (!is_array($this->view->Orders->NewOrder)) {
            $this->view->Orders->NewOrder = array($this->view->Orders->NewOrder);
    Zend_Debug::dump($this->view->Orders->NewOrder);
        }