Req->Doc #61972 [Opn->Ana]: addchild treats text as a tag
| From: | cmb@php.net | Date: | Tue, 07 Aug 2018 15:20:40 +0000 |
| Subject: | Req->Doc #61972 [Opn->Ana]: addchild treats text as a tag | ||
| References: | 1 | Groups: | php.doc.bugs |
| Request: | Send a blank email to doc-bugs+get-15949@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=61972&edit=1
ID: 61972
Updated by: cmb@php.net
Reported by: crashyn at op dot pl
Summary: addchild treats text as a tag
-Status: Open
+Status: Analyzed
-Type: Feature/Change Request
+Type: Documentation Problem
Package: SimpleXML related
Operating System: Windows XP
PHP Version: 5.4.2
Block user comment: N
Private report: N
New Comment:
> Something is wrong here.
No, everything works as expected, albeit the behavior is not
documented. Firstly, I doubt that the tag has ever been removed
as reported originally; almost certainly the tag was simply not
shown by the browser.
Anyhow, SimpleXMLElement::addChild() uses xmlNewChild() under the
hood, and the relevant documentation[1] states:
| If @content is non NULL, a child list containing the TEXTs and
| ENTITY_REFs node will be created. NOTE: @content is supposed to be
| a piece of XML CDATA, so it allows entity references. XML special
| chars must be escaped first by using xmlEncodeEntitiesReentrant(),
| or xmlNewTextChild() should be used.
When SimpleXMLElement::__toString() is called, it uses
xmlNodeListGetString() under the hood, whose documentation[2]
states:
| Build the string equivalent to the text contained in the Node
| list made of TEXTs and ENTITY_REFs
So *known* entity refs are resolved, while unresolvable entity
refs are skipped (€ is not predefined).
Note that creating empty child nodes, and setting their value
afterwards via assignment has different results[3], because the
assignment applies xmlEncodeEntitiesReentrant() automatically.
Changing to documentation issue.
[1] <http://www.xmlsoft.org/html/libxml-tree.html#xmlNewChild>
[2] <http://www.xmlsoft.org/html/libxml-tree.html#xmlNodeListGetString>
[3] <https://3v4l.org/JMd3W>
Previous Comments:
------------------------------------------------------------------------
[2012-05-25 12:04:01] arjen at react dot com
Something is wrong here.
The tag is not removed, it's not encoded anymore. But &entity; are removed.
See http://3v4l.org/EJGuL
------------------------------------------------------------------------
[2012-05-25 11:54:40] sjon at hortensius dot net
Shouldn't the values passed to xmlNewChild in addChild go through BAD_CAST like
all other Xml related methods do?
------------------------------------------------------------------------
[2012-05-20 21:54:40] crashyn at op dot pl
<?php
$xml_header = "<?xml version='1.0'
encoding='utf-8'?><xml/>";
$xml = new SimpleXMLElement($xml_header);
$xml->addChild("first_string","this is <mystring>");
$xml->addChild("second_string","this is < mystring>");
$xml->asXML("test.xml");
echo "<pre>" . $xml->first_string . "<br />"; // 'this is
'
echo $xml->second_string . "</pre>"; // 'this is < mystring>'
?>
------------------------------------------------------------------------
[2012-05-16 20:55:00] riptide dot tempora at opinehub dot com
Can you provide a test script and its actual vs. expected output to show exactly what you mean?
------------------------------------------------------------------------
[2012-05-07 21:09:58] crashyn at op dot pl
Description:
------------
---
From manual page: http://www.php.net/simplexmlelement.addchild
---
addChild treats <my_string> as a tag nd removes it completely
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=61972&edit=1