PHP：DOMNode::appendChild 到元素数组
我正在使用 DOMDocument 来解析 XML 文件。我循环遍历不同的元素，看看是否缺少其中任何一个，然后用 createElement 填充一个数组，并显示错误消息。最后，我尝试追加该数组，但我总是收到相同的错误消息：
Uncaught exception 'DOMException' with message 'Wrong Document Error'
DOMNode->appendChild(Object(DOMElement))
1 {main}
thrown in /xxx/xxx.php on line 235
PHP Fatal error: Call to undefined method DOMElement::item() in /xxx/xxx.php on line 235.
代码如下：
$SMQuery = new DOMDocument();
$SMQuery->loadXML($params);
$response = $SMQuery->createElement('SMreply');
$errors = array();
if (!$reqtyp = $SMQuery->getElementsByTagName("tag1"))
{$errors[] = $SMQuery->createElement('error', 'tag1 Element is missing');}
if (!$reqtyp = $SMQuery->getElementsByTagName("tag2"))
{$errors[] = $SMQuery->createElement('error', 'tag2 Element is missing');}
......
if(!empty($errors))
{
foreach($errors as $error) {
$response->appendChild($error); <==== this line is causing the error !!!
}
}
非常感谢任何帮助。 干杯， 瑞奇。
I am using DOMDocument to parse an XML file. I loop through the different Elements and see if any of them is missing and I fill an array with a createElement, with the error message. At the end I'm trying to appendChild that array but I always get the same error message:
Uncaught exception 'DOMException' with message 'Wrong Document Error'
DOMNode->appendChild(Object(DOMElement))
1 {main}
thrown in /xxx/xxx.php on line 235
PHP Fatal error: Call to undefined method DOMElement::item() in /xxx/xxx.php on line 235.
the code is as follow:
$SMQuery = new DOMDocument();
$SMQuery->loadXML($params);
$response = $SMQuery->createElement('SMreply');
$errors = array();
if (!$reqtyp = $SMQuery->getElementsByTagName("tag1"))
{$errors[] = $SMQuery->createElement('error', 'tag1 Element is missing');}
if (!$reqtyp = $SMQuery->getElementsByTagName("tag2"))
{$errors[] = $SMQuery->createElement('error', 'tag2 Element is missing');}
......
if(!empty($errors))
{
foreach($errors as $error) {
$response->appendChild($error); <==== this line is causing the error !!!
}
}
Any help is much appreciated.
Cheers,
Riki.
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评论（1）
您没有显示
$response的定义位置，但如果它是另一个new DOMDocument()的结果，那么这就解释了您的错误 - 您无法添加节点直接从一个 DOM 对象到另一个 DOM 对象。必须首先通过->importNode()< 导入它/a>.只有在那之后你才能真正附加它。You don't show where
$responseis being defined, but if it's the result of anothernew DOMDocument(), then that explains you error - you can't add nodes from one DOM object to another directly. It has to be imported first via->importNode(). Only after that can you actually append it.