Bug #68278 [Opn->Nab]: RecursiveIteratorIterator fails when passed an IteratorAggregate

Edit report at https://bugs.php.net/bug.php?id=68278&edit=1 ID: 68278 Updated by: requinix@php.net Reported by: chuck at manchuck dot com Summary: RecursiveIteratorIterator fails when passed an IteratorAggregate -Status: Open +Status: Not a bug Type: Bug Package: SPL related Operating System: windows/*nix PHP Version: 5.5.18 Block user comment: N Private report: N New Comment: RecursiveIteratorIterator is an iterator over other recursive iterators. As such it needs to be given either (a) a RecursiveIterator or (b) an IteratorAggregate that produces a RecursiveIterator. ArrayIterator is not recursive, thus the error. Use RecursiveArrayIterator instead. http://3v4l.org/Ia7qL Previous Comments: ------------------------------------------------------------------------ [2014-10-21 15:00:08] chuck at manchuck dot com This will also cause the same error: $iterator = new RecursiveIteratorIterator(new \ArrayObject([])); Fatal error: Uncaught exception 'InvalidArgumentException' with message 'An instance of RecursiveIterator or IteratorAggregate creating it is required' in /var/www/sando/bin/iteratorBug.php on line 2 InvalidArgumentException: An instance of RecursiveIterator or IteratorAggregate creating it is required in /var/www/sando/bin/iteratorBug.php on line 2 ArrayObject does implement IteratorAggregate: $ php -r 'var_dump(class_implements("\ArrayObject"));' array(5) { 'IteratorAggregate' => string(17) "IteratorAggregate" 'Traversable' => string(11) "Traversable" 'ArrayAccess' => string(11) "ArrayAccess" 'Serializable' => string(12) "Serializable" 'Countable' => string(9) "Countable" } ------------------------------------------------------------------------ [2014-10-21 14:54:51] chuck at manchuck dot com Description: ------------ When RecursiveIteratorIterator is given an IteratorAggregate, a fatal exception is thrown. Test script: --------------- class IteratorBug implements IteratorAggregate { public function getIterator() { return new ArrayIterator([]); } } $iterator = new RecursiveIteratorIterator(new IteratorBug()); Expected result: ---------------- a RecursiveIteratorIterator is created Actual result: -------------- Fatal error: Uncaught exception 'InvalidArgumentException' with message 'An instance of RecursiveIterator or IteratorAggregate creating it is required' in /var/www/sando/bin/iteratorBug.php on line 11 InvalidArgumentException: An instance of RecursiveIterator or IteratorAggregate creating it is required in /var/www/sando/bin/iteratorBug.php on line 11 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=68278&edit=1