Bug #64813 [NEW]: SimpleXMLIterator unintentionally rewinds to beginning
From: amfriedman at gmail dot com
Operating system: Unbuntu 11
PHP version: 5.3.25
Package: SimpleXML related
Bug Type: Bug
Bug description:SimpleXMLIterator unintentionally rewinds to beginning
Description:
------------
---
From manual page: http://php.net/manual/en/class.simplexmliterator.php
---
When under a for-loop and iterating through a SimpleXMLIterator object,
merely
reading from a variable that stores the children being iterated will cause
a
rewind to the beginning of the object within which you are looping.
Test script:
---------------
$xml = new SimpleXMLIterator($xml_str);
$nodes = $nodes_for_lookup = $xml->children();
$n_node = -1;
for($nodes->rewind(); $nodes->valid(); $nodes->next()) {
$node = $nodes->current();
$n_node++;
// This rewinds this loop
$value_to_check = $nodes[$n_node+1];
// This also rewinds the loop
$value_to_check = $nodes_for_lookup[$n_node+1];
// This does NOT rewind the loop (expected behavior)
$nodes_now = $xml->children();
$value_to_check = $nodes_now[$n_node+1];
}
Expected result:
----------------
The loop should NOT be rewound! Merely reading from the object should not
affect
the iterator's pointer whatsoever.
Actual result:
--------------
The loop is getting rewound due to reading a specific key-based item in the
iterator object/array.
--
Edit bug report at https://bugs.php.net/bug.php?id=64813&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=64813&r=trysnapshot54
Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=64813&r=trysnapshot53
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=64813&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=64813&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=64813&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=64813&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=64813&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=64813&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=64813&r=support
Expected behavior: https://bugs.php.net/fix.php?id=64813&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=64813&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=64813&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=64813&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=64813&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=64813&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=64813&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=64813&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=64813&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=64813&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=64813&r=mysqlcfg
Thread (2 messages)
- amfriedman at gmail dot com