Doc #71030 [NEW]: PHP 7.0 list() behavior
From: filippo dot desantis at gmail dot com
Operating system: OSX
PHP version: 7.0.0
Package: *General Issues
Bug Type: Documentation Problem
Bug description:PHP 7.0 list() behavior
Description:
------------
I'm using
PHP 7.0.0 (cli) (built: Dec 2 2015 13:35:31)
Zend Engine v3.0.0, Copyright (c) 1998-2015 Zend Technologies
Running the example in the RFC
https://wiki.php.net/rfc/abstract_syntax_tree
for the list() function
$a = [1, 2];
list($a, $b) = $a;
// OLD: $a = 1, $b = 2
// NEW: $a = 1, $b = null + "Undefined index 1"
I don't get the "NEW" result but the "OLD" one.
Looking for some more information I found in the documentation
(http://php.net/list) the warning "Modification of the array during
list() execution (e.g. using list($a, $b) = $b) results in undefined
behavior.".
I was wondering which of the two behaviour should be the good one :)
Test script:
---------------
<?php
$a = [1, 2];
list($a, $b) = $a;
var_dump($a, $b);
--
Edit bug report at https://bugs.php.net/bug.php?id=71030&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=71030&r=trysnapshot54
Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=71030&r=trysnapshot55
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=71030&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=71030&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=71030&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=71030&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=71030&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=71030&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=71030&r=support
Expected behavior: https://bugs.php.net/fix.php?id=71030&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=71030&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=71030&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=71030&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71030&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=71030&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=71030&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=71030&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=71030&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=71030&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=71030&r=mysqlcfg
Thread (2 messages)
- filippo dot desantis at gmail dot com