Bug #67189 [NEW]: Clone is not implemented for IteratorIterator and related classes

From: ottodavid at gmx dot net Operating system: OS X PHP version: 5.5.12 Package: SPL related Bug Type: Bug Bug description:Clone is not implemented for IteratorIterator and related classes Description: ------------ IteratorIterator and derived classes like FilterIterator, RegexIterator etc. are not cloneable, because the implementation for spl_dual_it.clone_obj is missing. This is issue, especially because Iterator is clonable, IteratorIterator is derived from Iterator and is not clonable, thereby violating the liskov substitution principle. Test script: --------------- <?php $arrayIterator = new ArrayIterator(array(1,2,3)); $it1 = new IteratorIterator($arrayIterator); $it2 = clone $it1; Actual result: -------------- PHP Fatal error: Trying to clone an uncloneable object of class IteratorIterator -- Edit bug report at https://bugs.php.net/bug.php?id=67189&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=67189&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=67189&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=67189&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=67189&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=67189&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=67189&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=67189&r=needscript Try newer version: https://bugs.php.net/fix.php?id=67189&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=67189&r=support Expected behavior: https://bugs.php.net/fix.php?id=67189&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=67189&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=67189&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=67189&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=67189&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=67189&r=dst IIS Stability: https://bugs.php.net/fix.php?id=67189&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=67189&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=67189&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=67189&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=67189&r=mysqlcfg