From:             le...@php.net
Operating system: 
PHP version:      Irrelevant
Package:          SPL related
Bug Type:         Bug
Bug description:IteratorIterator inheritance problems

Description:
------------
IteratorIterator has a method `seek` that matches the signature for
implementing 
SeekableIterator, but it doesn't implement the interface.

Also, subclasses of IteratorIterator do not inherit the seek method. This
breaks 
the rules for inheritance.

I'm not sure how to propose fixing it at this point.  This should have been
caught 
before being released. Like much of the SPL, this was not properly thought
out and 
tested.

Test script:
---------------
$iterator = new IteratorIterator(
    new EmptyIterator()
);

var_dump($iterator instanceof SeekableIterator);
var_dump(method_exists($iterator, 'seek');

$iterator = new NoRewindIterator(
    new EmptyIterator()
);
var_dump(method_exists($iterator, 'seek');


Expected result:
----------------
bool(true);
bool(true);
bool(true);

Actual result:
--------------
bool(false);
bool(true);
bool(false);

-- 
Edit bug report at https://bugs.php.net/bug.php?id=63507&edit=1
-- 
Try a snapshot (PHP 5.4):   
https://bugs.php.net/fix.php?id=63507&r=trysnapshot54
Try a snapshot (PHP 5.3):   
https://bugs.php.net/fix.php?id=63507&r=trysnapshot53
Try a snapshot (trunk):     
https://bugs.php.net/fix.php?id=63507&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=63507&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=63507&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=63507&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=63507&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=63507&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=63507&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=63507&r=notwrong
Not enough info:            
https://bugs.php.net/fix.php?id=63507&r=notenoughinfo
Submitted twice:            
https://bugs.php.net/fix.php?id=63507&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=63507&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=63507&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=63507&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=63507&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=63507&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=63507&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=63507&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=63507&r=mysqlcfg

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