Doc #68457 [Nab]: Reference by pointer inaccurate in foreach

Edit report at https://bugs.php.net/bug.php?id=68457&edit=1 ID: 68457 Updated by: yohgaki@php.net Reported by: mberding at dtoolbox dot com Summary: Reference by pointer inaccurate in foreach Status: Not a bug Type: Documentation Problem Package: Variables related Operating System: CentOS PHP Version: 5.4.35 Block user comment: N Private report: N New Comment: http://3v4l.org/ui7LJ The last element became usual var with unset(), though. Separate zval after foreach by default, parhaps? Previous Comments: ------------------------------------------------------------------------ [2014-11-20 01:35:46] yohgaki@php.net Or is it possible not to change the last element of the input array a reference? It would be the best behavior. http://3v4l.org/QSZXm According this result, all elements became reference until 5.2.0 which is consistent for elements. Current behavior is inconsistent, it seems. ------------------------------------------------------------------------ [2014-11-20 01:27:59] yohgaki@php.net Sample code in the doc may be improved. I didn't understand what's going on at first. http://3v4l.org/jNfvt <?php $a = array(1,2,3,4); foreach($a AS &$y) { $y = $y*2; } echo PHP_EOL; var_dump($a); foreach($a AS $y) { echo $y.' '; } echo PHP_EOL; var_dump($a); ------------------------------------------------------------------------ [2014-11-20 01:20:54] yohgaki@php.net I got it. I works as it documented ;) http://3v4l.org/eH1NY ------------------------------------------------------------------------ [2014-11-19 23:15:49] yohgaki@php.net I'm missing something probably, but this result is interesting to me. http://3v4l.org/G2fXg http://3v4l.org/CCadi I don't have time to look into now :) ------------------------------------------------------------------------ [2014-11-19 23:00:02] aharvey@php.net PHP doesn't have block scope in general, so I'm not sure why it would be expected that $y would be bound to the scope of the foreach loop in any way. I'm not really inclined to change the text on the foreach page yet again, honestly — it's been through so many revisions at this point that it's getting a little silly, and this variant seems to have generated fewer bug reports than the previous ones. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=68457 -- Edit this bug report at https://bugs.php.net/bug.php?id=68457&edit=1