Req #60399 [NEW]: IteratorAggregate and RecursiveIterator::getChildren()

From: Date: Sun, 27 Nov 2011 18:34:46 +0000
Subject: Req #60399 [NEW]: IteratorAggregate and RecursiveIterator::getChildren()
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-165524@lists.php.net to get a copy of this message 
From:             
Operating system: 
PHP version:      5.3.8
Package:          SPL related
Bug Type:         Feature/Change Request
Bug description:IteratorAggregate and RecursiveIterator::getChildren()

Description:
------------
On the one hand it's possible to create a RecursiveIteratorIterator out of
an 
object that implements IteratorAggregate *and* that returns an object 
implementing 
RecursiveIterator for IteratorAggregate::getIterator(). That's fine.

On the other hand, if RecursiveIterator::getChildren() returns an object
that 
implements IteratorAggregate *and* that returns an object implementing 
RecursiveIterator for IteratorAggregate::getIterator() it gives this
error:

Fatal error: Uncaught exception 'UnexpectedValueException' with message
'Objects 
returned by RecursiveIterator::getChildren() must implement
RecursiveIterator'

It would be nice if both, the iterator object in instantiating 
RecursiveIteratorIterator and the return object for 
RecursiveIterator::getChildren() would be compatible in the sense that both

would 
allow an object implementing IteratorAggregate.

Right now, only the constructor allows this, but getChildren() does not
allow 
IteratorAggregate.

For completeness of this report, if an invalid iterator is given on 
instantiating 
a RecursiveIteratorIterator, the error message is:

Fatal error: Uncaught exception 'InvalidArgumentException' with message 'An

instance of RecursiveIterator or IteratorAggregate creating it is required'

Test script:
---------------
(my test script is a little larger, I can provide one upon request)


-- 
Edit bug report at https://bugs.php.net/bug.php?id=60399&edit=1
-- 
Try a snapshot (PHP 5.4):            https://bugs.php.net/fix.php?id=60399&r=trysnapshot54
Try a snapshot (PHP 5.3):            https://bugs.php.net/fix.php?id=60399&r=trysnapshot53
Try a snapshot (trunk):              https://bugs.php.net/fix.php?id=60399&r=trysnapshottrunk
Fixed in SVN:                        https://bugs.php.net/fix.php?id=60399&r=fixed
Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=60399&r=needdocs
Fixed in release:                    https://bugs.php.net/fix.php?id=60399&r=alreadyfixed
Need backtrace:                      https://bugs.php.net/fix.php?id=60399&r=needtrace
Need Reproduce Script:               https://bugs.php.net/fix.php?id=60399&r=needscript
Try newer version:                   https://bugs.php.net/fix.php?id=60399&r=oldversion
Not developer issue:                 https://bugs.php.net/fix.php?id=60399&r=support
Expected behavior:                   https://bugs.php.net/fix.php?id=60399&r=notwrong
Not enough info:                     https://bugs.php.net/fix.php?id=60399&r=notenoughinfo
Submitted twice:                     https://bugs.php.net/fix.php?id=60399&r=submittedtwice
register_globals:                    https://bugs.php.net/fix.php?id=60399&r=globals
PHP 4 support discontinued:          https://bugs.php.net/fix.php?id=60399&r=php4
Daylight Savings:                    https://bugs.php.net/fix.php?id=60399&r=dst
IIS Stability:                       https://bugs.php.net/fix.php?id=60399&r=isapi
Install GNU Sed:                     https://bugs.php.net/fix.php?id=60399&r=gnused
Floating point limitations:          https://bugs.php.net/fix.php?id=60399&r=float
No Zend Extensions:                  https://bugs.php.net/fix.php?id=60399&r=nozend
MySQL Configuration Error:           https://bugs.php.net/fix.php?id=60399&r=mysqlcfg

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