Re: Re: Possible foreach bug; seeking advice to isolate the problem

On Sat, 23 Oct 2010 08:34:27 +0200, peter.e.lind@gmail.com (Peter Lind) wrote: >It is not a bug - somewhere before the foreach loop you've got, a >variable is being referenced, and that's throwing things off. >Otherwise, unsetting the variable would have no effect on the problem >you're seeing. Could you please be more specific? "Somewhere... a variable is being referenced" doesn't give me any insight into what is happening. It's absolutely clear to me WHERE the problem is. The first foreach loop is causing the problem; I can prove this by removing it. But WHAT the problem is, is absolutely unclear. I've studied this code every which way, and I don't see how the first foreach loop can possibly make the second one change the array -- unless it's a bug. I've boiled the script down to a couple of dozen lines that demonstrate the problem without references to a database or to other scripts. Having this to play with may help others give me some insight. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <title>foreach problem</title> </head> <body> <?php $qs = array(); for ($i=0; $i<3; ++$i) { $qs[] = array($i); } foreach ($qs as &$q) { } echo $qs[0][0] . $qs[1][0] . $qs[2][0] . "<br>"; foreach ( $qs as $q ) { echo $qs[0][0] . $qs[1][0] . $qs[2][0] . "<br>"; } echo $qs[0][0] . $qs[1][0] . $qs[2][0] . "<br>"; ?> </body> </html>