Req #55700 [Com]: Disable automatic registration on a DOMXpath object.
Edit report at https://bugs.php.net/bug.php?id=55700&edit=1
ID: 55700
Comment by: thomas at weinert dot info
Reported by: thomas at weinert dot info
Summary: Disable automatic registration on a DOMXpath object.
Status: Assigned
Type: Feature/Change Request
Package: DOM XML related
PHP Version: 5.3.8
Assigned To: rrichards
Block user comment: N
Private report: N
New Comment:
This should not brake BC because the default value of the option would still be TRUE. If the
developer does not set the option to FALSE it will still show the same unpredictable behavior like
before.
The idea is to make a transition from automatic to manual registration less painful and more secure.
But I am not sure about the evaluate()/query() parameter. It would get at least more complex. (NULL
= default, use option value)
Previous Comments:
------------------------------------------------------------------------
[2011-09-15 12:24:48] pajoye@php.net
See https://bugs.php.net/bug.php?id=49490 as
well
------------------------------------------------------------------------
[2011-09-15 12:19:52] pajoye@php.net
hi Rob!
Can you take a look pls? Afaict it is not BC but this behavior never really works
:)
------------------------------------------------------------------------
[2011-09-15 11:16:33] thomas at weinert dot info
Description:
------------
DOMXpath currently registers namespaces of the current context or the document element
automatically. This results in broken and inconsistent results (Bug #49490). An argument has been
added to evaluate() and query() to change this behavior. The current situation is that the argument
and the context argument has ALWAYS to be used to have predictable results.
A better way would be an option on the DOMXpath object.
An option would not only mean less code, it will also allow to just change one part (initialization
of ones DOMXpath instance), without the need to modify all occurrences evaluate()/query() in
existing source.
Test script:
---------------
<?php
$dom = new DOMDocument();
$dom->loadXML(
'<foobar><a:foo xmlns:a="urn:a">'.
'<b:bar xmlns:b="urn:b"/></a:foo>'.
'</foobar>'
);
$xpath = new DOMXPath($dom);
// disable automatic namespace registration
$xpath->enableRegisterNodeNS = FALSE;
$context = $dom->documentElement->firstChild;
$xpath->registerNamespace('a', 'urn:b');
var_dump(
$xpath->evaluate(
'descendant-or-self::a:*',
$context
)->item(0)->tagName
);
?>
Expected result:
----------------
string(5) "b:bar"
Actual result:
--------------
string(5) "a:foo"
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=55700&edit=1
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