From: Jason at hybd dot net
Operating system: Windows 2003 Enterprise Server
PHP version: 5.0.0RC3
PHP Bug Type: *XML functions
Bug description: Object Upcasting Occurs upon itterating children
Description:
------------
When using the itterator DomNode::childNodes to cycle through nodes
objects that have been extended though PHP (In this case, TplTagDefault),
the behaviour becomes inconsistent.
As you can see from the output, the object returned is sometimes a
TplTagDefault but other times it's a DOM* object. Generally the last item
in the DomNodeList is of the correct type.
I have posted this on a couple of forums/IRC support places and they all
seem to agree it's a bug (though few people seem to have DOM/XML
understanding). If this is not a bug, please could someone explain how I
prevent objects from lossing their inheritance (i.e. prevent upcasting)
when cycling through them.
-- Jay
Reproduce code:
---------------
<?php
class TplCompileTree extends DomDocument {}
class TplTagDefault extends DomElement {}
$docRoot = &new TplCompileTree();
$newNode = &new TplTagDefault('Root');
$docRoot->appendChild($newNode);
for($i = 0; $i < 3; $i++) {
$newNode->appendChild(new TplTagDefault('Kiddy'.$i));
}
foreach($docRoot->childNodes AS $child) {
var_dump($child);
foreach($child->childNodes as $kids) {
var_dump($kids);
}
}
echo $docRoot->saveXML();
?>
Expected result:
----------------
object(TplTagDefault)#13 (0) {
}
object(TplTagDefault)#18 (0) {
}
object(TplTagDefault)#20 (0) {
}
object(TplTagDefault)#14 (0) {
}
<?xml version="1.0"?>
<Root><Kiddy0/><Kiddy1/><Kiddy2/></Root>
Actual result:
--------------
object(TplTagDefault)#13 (0) {
}
object(DOMElement)#18 (0) {
}
object(DOMElement)#20 (0) {
}
object(TplTagDefault)#14 (0) {
}
<?xml version="1.0"?>
<Root><Kiddy0/><Kiddy1/><Kiddy2/></Root>
--
Edit bug report at http://bugs.php.net/?id=29092&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=29092&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=29092&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=29092&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=29092&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=29092&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=29092&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=29092&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=29092&r=support
Expected behavior: http://bugs.php.net/fix.php?id=29092&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=29092&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=29092&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=29092&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=29092&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=29092&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=29092&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=29092&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=29092&r=float
