Doc->Bug #75716 [Csd->Dup]: RecursiveArrayIterator does not traverse vars by reference

Edit report at https://bugs.php.net/bug.php?id=75716&edit=1 ID: 75716 Updated by: requinix@php.net Reported by: greg at girty dot net Summary: RecursiveArrayIterator does not traverse vars by reference -Status: Closed +Status: Duplicate -Type: Documentation Problem +Type: Bug Package: SPL related Operating System: OSX, linux PHP Version: 7.1.12 Block user comment: N Private report: N Previous Comments: ------------------------------------------------------------------------ [2017-12-21 16:12:20] greg at girty dot net mixed expected and actual results, closing and resubmitting a corrected version ------------------------------------------------------------------------ [2017-12-21 16:08:49] greg at girty dot net Description: ------------ The expected behaviour of RecursiveArrayIterator is that only leaf nodes will be iterated, but if an array is contained by reference, it is not traversed, instead it is returned by next(). Explicit use of RecursiveIteratorIterator::LEAVES_ONLY has no affect. Submitter has tested this in OSX and Debian Linux, others likely affected. HHVM gives the expected result, see https://3v4l.org/up3me Test script: --------------- function flatten(array $nestedArraysAndStrings){ $flat=[]; $iter = new RecursiveIteratorIterator( new RecursiveArrayIterator($nestedArraysAndStrings)); foreach($iter as $leaf){ $flat[] = $leaf; } return join(NULL, $flat); } $noRefs = [[[['some']]],[' nested ']," items \n"]; $withRefs = []+$noRefs; $wat = $noRefs[0]; $withRefs[0] = &$wat; echo flatten($noRefs); echo flatten($withRefs); Expected result: ---------------- some nested items n Notice: Array to string conversion in /in/up3me on line 8 Array nested items n Actual result: -------------- some nested items some nested items ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=75716&edit=1