Edit report at https://bugs.php.net/bug.php?id=64643&edit=1
ID: 64643 Updated by: ni...@php.net Reported by: mikolaj dot kopras at vexillium dot org Summary: MultipleIterator and its not scalar keys -Status: Open +Status: Closed Type: Bug Package: SPL related Operating System: Ubuntu 2.6.38-15-generic x86_64 PHP Version: 5.4.14 -Assigned To: +Assigned To: nikic Block user comment: N Private report: N New Comment: This issue is already fixed in PHP 5.5, where array keys will be allowed for iterators. Previous Comments: ------------------------------------------------------------------------ [2013-04-13 16:55:05] mikolaj dot kopras at vexillium dot org Description: ------------ The idea of MultipleIterator is great, however its key() method implementation is somehow invalid. Documentation of Iterator::key clearly stands, that key have to be a scalar or NULL, but MultipleIterator returns an array which leads to problems. First problem is inability to use $key => $val syntax in foreach Second problem is inability to use MultipleIterator with other iterators, e.g. with InfiniteIterator. MultipleIterator could just compute key by imploding keys from all attached iterators using user specified separator. I've tried this localy and worked perfectly. If that's the way to go, I'll be happy to help with patch. Test script: --------------- $multiIter = new MultipleIterator(); $multiIter->attachIterator(new ArrayIterator(array('a'))); $multiIter->attachIterator(new ArrayIterator(array('b'))); $infinityIter = new InfiniteIterator($multiIter); foreach(new LimitIterator($infinityIter, 0, 2) as $item) { echo $item[0] . $item[1]; } Expected result: ---------------- I expect "abab" to be printed Actual result: -------------- Warning: Illegal type returned from MultipleIterator::key() in /some/path/phptests/iterators/InfinityIterator.php on line 8 ab Warning: Illegal type returned from MultipleIterator::key() in /some/path/phptests/iterators/InfinityIterator.php on line 8 ab Warning: Illegal type returned from MultipleIterator::key() in /some/path/phptests/iterators/InfinityIterator.php on line 8 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=64643&edit=1