[PHP-BUG] Bug #71241 [NEW]: array_replace_recursive sometimes mutates its parameters

[email protected] ("[email protected]")
Newsgroups php.bugs
Message-ID <[email protected]>
From:             as
Operating system: 
PHP version:      7.0.1
Package:          Variables related
Bug Type:         Bug
Bug description:array_replace_recursive sometimes mutates its parameters

Description:
------------
array_replace_recursive can sometimes mutate its params if references
are nested within. This appears to be new behavior in PHP7. It also
affects PHPunit.

Test script and diff: https://3v4l.org/0sdbm

Patch attached.


Test script:
---------------
<?php

$one = [1];
$two = [42];

$arr1 = ['k' => &$one];
$arr2 = ['k' => &$two];
var_dump(current($one), current($two));
array_replace_recursive($arr1, $arr2);
var_dump(current($one), current($two));


Expected result:
----------------
int(1)
int(42)
int(1)
int(42)


Actual result:
--------------
int(1)
int(42)
int(42)
int(42)


-- 
Edit bug report at https://bugs.php.net/bug.php?id=71241&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=71241&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=71241&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=71241&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=71241&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=71241&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=71241&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=71241&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=71241&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=71241&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=71241&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=71241&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=71241&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=71241&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71241&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=71241&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=71241&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=71241&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=71241&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=71241&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=71241&r=mysqlcfg
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