I am trying to append <img src="" alt="" > inside <body></body> using PHP DOMDocument.
Here is the code:
$testcode ='<!DOCTYPE html><html><head><title></title></head><body></body></html>';
$dom = new DOMDocument;
$dom->loadHTML($testcode);
$img_tag = $dom->createDocumentFragment();
$img_tag->appendXML('<img src="http://www.somesite.com/" alt="" >');
$body = $dom->getElementsByTagName('body');
foreach($body as $node) {
$node->appendChild($img_tag);
}
echo $dom->saveHTML();
I was getting this error:
Message: DOMNode::appendChild(): Document Fragment is empty
But after few experiment I figured out that it was expecting closing tag. So this code worked fine:
<img src="http://www.somesite.com/" alt="" ></img>
The final appended tag looks fine. It removes the closing tag automatically.
<img src="http://www.somesite.com/" alt="" >
QUESTION: Why we have to use closing tag for this? Its not so obvious.
ANOTHER PROBLEM: Adding URL parameters triggers the same error mentioned above.
<img src="http://www.somesite.com/?v=1¶m=4" alt="" >
Again after few trials, when URL was encoded its worked fine. Once again its not so obvious.
QUESTION: How can I append the image tag in simple way without doing the things I did above.
Actually I am writing a mail application where I just wanted to insert the google analytics email open tracking code at the end. Something like:
<img src="http://www.google-analytics.com/collect?v=1&t=event" alt="" >
The problem with encoded url is that its not tracking anything.
Thanks in advance!
