DOMDocument stripping tags from inline scripts PHP
Question
This is a strange one but looks like $dom->saveHTML() is stripping tags from inline javascript
$domStr = '
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>my page</title>
<script>
var elem = "<div>some content</div>";
</script>
</head>
<body>
<div>
MY PAGE
</div>
</body>
</html>
';
$doc = new DOMDocument();
libxml_use_internal_errors(true);//prevents tags in js from throwing errors; see php.net manual
$doc->formatOutput = true;
$doc->strictErrorChecking = false;
$doc->preserveWhiteSpace = true;
$doc->loadHTML($domStr);
echo $doc->saveHTML();
exit;
http://sandbox.onlinephpfunctions.com/code/ad59a2a1016b2128e437ef61dbe00f1c511bff8d
if you use libxml_use_internal_errors(true); you will not see what is wrong but if removed you get
<b>Warning</b>: DOMDocument::loadHTML(): Unexpected end tag : div
Same thing happens with
$doc->formatOutput = false;
Any help is appreciated.
3 answers
solution1
0 2019-06-05 05:17:42
I've avoided this by not including any HTML in my inline JavaScript. Instead, I've added <template> elements containing the HTML string I want to manipulate in JS, and then I read that dynamically at runtime. For example:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>my page</title>
</head>
<body>
<div>
MY PAGE
</div>
<template id="content-template">
<div>some content</div>
</template>
<script>
var elem = document.getElementById('content-template').innerHTML;
...
</script>
</body>
</html>
solution2
0 2021-10-01 10:17:20
It is probably a bug of DomDocument.
You have to escape the closing tag of HTML in JS or it gets misinterpreted.
This should work var elem = "<div>some content<\/div>";
Alternatively, if you pass option 1 to the loadHtml the parser will ignore it.
In a bit of an oddity 1 can mean both LIBXML_SCHEMA_CREATE and LIBXML_ERR_WARNING as these two predefined constants have the same value. Presumably it is meant to be LIBXML_SCHEMA_CREATE which does the following "Create default/fixed value nodes during XSD schema validation".
solution3
-1 2014-12-04 09:46:16
在DOCTYPE声明之后，您丢失了<html>开头的标记。
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