PHP: DOMNode::appendChild to an array of Elements

Question

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.

GOT IT!!!! I had a typo in my original code!

Riki Lyng
– Riki Lyng

2012-02-02 16:31:01 +00:00
Commented Feb 2, 2012 at 16:31 — Riki Lyng
– Riki Lyng, Commented Feb 2, 2012 at 16:31
So what was the typo and the correction?

Jay Bienvenu
– Jay Bienvenu

2017-08-04 13:37:49 +00:00
Commented Aug 4, 2017 at 13:37 — Jay Bienvenu
– Jay Bienvenu, Commented Aug 4, 2017 at 13:37

Marc B · Accepted Answer · 2012-02-02 14:30:21Z

2

You don't show where $response is being defined, but if it's the result of another new 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.

answered Feb 2, 2012 at 14:30

Marc B

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1 Comment

Riki Lyng Over a year ago

Sorry that line was missing. $response is defined (I just edited the code there and added it)!. ->importNode causes the same error message. I don't think I need to do an importNode, because if I do $test = $SMQuery->createElement('test','test'); $response->appendChild($test); that works fine, and do not need to use importNode!

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