#41947 [Opn->Csd]: SimpleXML incorrectly registers empty strings as namespaces
| From: | rrichards@php.net | Date: | Tue, 10 Jul 2007 12:27:41 +0000 |
| Subject: | #41947 [Opn->Csd]: SimpleXML incorrectly registers empty strings as namespaces | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-114841@lists.php.net to get a copy of this message | ||
ID: 41947
Updated by: rrichards@php.net
Reported By: hubert dot roksor at gmail dot com
-Status: Open
+Status: Closed
Bug Type: SimpleXML related
PHP Version: 5CVS-2007-07-10 (snap)
New Comment:
This bug has been fixed in CVS.
Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
Thank you for the report, and for helping us make PHP better.
Previous Comments:
------------------------------------------------------------------------
[2007-07-10 08:17:06] hubert dot roksor at gmail dot com
Description:
------------
As per XML Namespaces specifications, "The attribute value in a default
namespace declaration MAY be empty. This has the same effect, within the
scope of the declaration, of there being no default namespace." (source:
http://www.w3.org/TR/REC-xml-names/#defaulting)
However, when creating
elements using an empty string as namespace, SimpleXML seems to register
the empty string as a namespace instead of just removing any inherited
namespace.
In the reproduce code below, we generate an empty tree to which we add
a new element "child" in the namespace "http://myns". Then we add an
element "grandchild" (whose content will be "hello") to that element
using an empty string as namespace so that "grandchild" does not inherit
"http://myns" as namespace. Then we attempt to transform
the tree using
XSLT, and verify grandchild's namespaces with getNamespaces().
Apparently, it is impossible to access "grandchild" in XSL because it
belongs to an empty namespace using an empty prefix (as shown with
getNamespaces()). Reloading the tree by dumping it as XML then reparsing
it with simplexml_load_string() circumvents that bug.
Tested on:
PHP 5.2.4-dev (cli) (built: Jul 10 2007 00:04:16)
libXML Version => 2.6.26
SimpleXML Revision => $Revision: 1.151.2.22.2.32 $
libxslt Version => 1.1.17
Reproduce code:
---------------
<?php
$xml = simplexml_load_string('<?xml version="1.0"
encoding="utf-8"?><root xmlns:myns="http://myns" />');
$grandchild = $xml->addChild('child', null,
'http://myns')->addChild('grandchild',
'hello', '');
$xslt = new XSLTProcessor;
$xslt->importStylesheet(simplexml_load_string('<?xml version="1.0"
encoding="utf-8" ?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:myns="http://myns">
<xsl:template match="myns:child">
[<xsl:value-of select="grandchild" />]
</xsl:template>
</xsl:stylesheet>'));
echo 'output before reload: ', $xslt->transformToXML($xml),
"namespaces: ", print_r($grandchild->getNamespaces(), true);
$xml = simplexml_load_string($xml->asXML());
$children = $xml->children('http://myns');
$grandchild = $children[0]->grandchild;
echo "\noutput after reload: ", $xslt->transformToXML($xml),
"namespaces: ", print_r($grandchild->getNamespaces(), true);
?>
Expected result:
----------------
output before reload: <?xml version="1.0"?>
[hello]
namespaces: Array
(
)
output after reload: <?xml version="1.0"?>
[hello]
namespaces: Array
(
)
Actual result:
--------------
output before reload: <?xml version="1.0"?>
[]
namespaces: Array
(
[] =>
)
output after reload: <?xml version="1.0"?>
[hello]
namespaces: Array
(
)
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=41947&edit=1