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Bug #34997 nodeValue is set when should be null
Submitted: 2005-10-27 00:37 UTC Modified: 2005-10-28 08:32 UTC
Votes:1
Avg. Score:3.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: php dot net at punk dot co dot nz Assigned:
Status: Wont fix Package: DOM XML related
PHP Version: 5.0.5 OS: Windows XP
Private report: No CVE-ID: None
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 [2005-10-27 00:37 UTC] php dot net at punk dot co dot nz 
Description:
------------
The nodeValue attribute appears to be set to the concatenation of the contents of all child text nodes.

As far as I understand according to the specification (p36, DOM2-Core.pdf, w3.org) the nodeValue should be set to NULL for Element node types (and many other node types).

This may be a problem for other node types as well.

Reproduce code:
---------------
http://www.punk.co.nz/php.net/nodeValue-test.zip

Includes a sample xml file and output.txt.

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 [2005-10-27 00:39 UTC] tony2001@php.net 
Please try using this CVS snapshot:

  http://snaps.php.net/php5-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5-win32-latest.zip
 [2005-10-27 01:10 UTC] rrichards@php.net 
This was done intentionally and as an extension to the DOM specs.  Provides quick access to Element content and is read-only for DOMElement. This is the only node type that this exception was made for.
 [2005-10-28 08:32 UTC] php dot net at punk dot co dot nz 
Does this impact memory usage and performance on large documents? As it appears to duplicate a lot of data.

From what I can tell this is not an extension, more a violation of the spec. The spec indicates it should be null, not undefined and open to interpretation.

IMHO it should be changed to reflect the spec and set to null, or if some people do use it, then maybe made an optional setting? And, if doing that, it might be more useful if it didn't concat all the descendant text nodes into the parent, but just contained only the content from any attached text/CDATA nodes. (Actually then I'd find it useful.)

/2c
 
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