DOMDocument insertBefore错误

Question

我试图在父元素之前插入一些元素，如下所示：

    $doc = new DOMDocument();
    $doc->loadXML($this->_template);

    $xpath  = new DOMXpath($doc);

    $blockNodeList = $xpath->query('//block[@name="'.$name.'"]');
    foreach ($blockNodeList as $blockNode) {
        if ($blockNode->hasChildNodes()) {
            foreach ($blockNode->childNodes as $childNode) {
                if ($childNode->nodeName != '#text') {
                    $blockNode->insertBefore($childNode, $blockNode);
                }
            }
        }
    }

但它只返回一个错误：未捕获的异常＆＃39; DOMException＆＃39;消息＆＃39;未找到错误＆＃39;

Answer 1

您需要将其插入父元素。

$blockNode->parentNode->insertBefore($childNode, $blockNode);