Bug #70934 [Com]: DOMDocument return wrong tree by tag in script tag

From: Date: Wed, 28 Mar 2018 16:04:50 +0000
Subject: Bug #70934 [Com]: DOMDocument return wrong tree by tag in script tag
References: 1  Groups: php.bugs 
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Edit report at https://bugs.php.net/bug.php?id=70934&edit=1

 ID:                 70934
 Comment by:         luca dot canella at diennea dot com
 Reported by:        sashott at abv dot bg
 Summary:            DOMDocument return wrong tree by tag in script tag
 Status:             Open
 Type:               Bug
 Package:            DOM XML related
 Operating System:   Linux
 PHP Version:        5.5Git-2015-11-18 (snap)
 Block user comment: N
 Private report:     N

 New Comment:

Bug confirmed and I wish to add another caveat. When script tag contains "text/html" the
probability to have a broken tree grows exponentially.
I also tried adding some <![CDATA[ ... ]]> but this isn't solving the problem.

Example:

----------- html.html ----------- 

<!doctype html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<meta http-equiv="X-UA-Compatible" content="IE=edge">
		<title>Titolo</title>
		<meta name="description" content="aaaa">
		<meta name="viewport" content="width=device-width, initial-scale=1">
	</head>
	<body>
		<div class="wrapper">
			<header></header>
			<main>
				<script type="text/html" id="ciao2"><![CDATA[
					<div>DDD</div>
				]]></script>
			</main>
			<footer></footer>
		</div>
		<script type="text/html" id="ciao">
			<div>AAAA</div>
		</script>
		<script>
			console.log(document.getElementById('ciao'),
document.getElementById('ciao2'), '<div>ZZZZ</div>');
		</script>
		<div>BBBB</div>
	</body>
</html>

----------- test.php ----------- 

<?php
$html = file_get_contents('html.html');
$dom = DOMDocument::loadHtml($html);
echo $dom->saveHTML();

--------------------------------


Previous Comments:
------------------------------------------------------------------------
[2015-11-18 10:54:30] sashott at abv dot bg

Description:
------------
DOMDocument return wrong tree by tag in variable in script tag. As example in DIV, a closing tag DIV
written in script tag (in text variable), close the previous DIV.


Test script:
---------------
<?php
$html_content='<!DOCTYPE html>
<html>
	<body>
		<div id="something">
			<script>
			var somevar=\'<div></div>\';
			</script>
			<div></div>
			<div></div>
		</div>
	</body>
</html>
';
$oldSetting=libxml_use_internal_errors(true);
libxml_clear_errors();
$html=new DOMDocument();
$html->loadHtml($html_content);
$node=$html->getElementById('something');
echo "<pre>";
foreach($node->childNodes as $child_node){
	echo $child_node->nodeName."\n";
}
echo "</pre>";
libxml_clear_errors();
libxml_use_internal_errors($oldSetting);
//Result:
//#text
//script
//Error appear from: var somevar=\'<div></div>\';
?>


Expected result:
----------------
script
div
div
//Can have some #text between them.

Actual result:
--------------
#text
script


------------------------------------------------------------------------



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Edit this bug report at https://bugs.php.net/bug.php?id=70934&edit=1

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