[PHP-BUG] Bug #76336 [NEW]: array foreach by reference will change the last value

From:             janpoem at gmail dot com
Operating system: windows, ubuntu
PHP version:      7.0.30
Package:          PHP Language Specification
Bug Type:         Bug
Bug description:array foreach by reference will change the last value

Description:
------------
Foreach an array by reference will change the last value (previous).

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

$array = [
	['a' => 'aa'],
	['b' => 'bb'],
	['c' => 'cc'],
	['d' => 'dd'],
	['e' => 'ee'],
	['f' => 'ff'],
];

foreach ($array as & $item) {
}

var_dump($array);
/*

here will output:

array(6) {
  [0]=>
  array(1) {
    ["a"]=>
    string(2) "aa"
  }
  [1]=>
  array(1) {
    ["b"]=>
    string(2) "bb"
  }
  [2]=>
  array(1) {
    ["c"]=>
    string(2) "cc"
  }
  [3]=>
  array(1) {
    ["d"]=>
    string(2) "dd"
  }
  [4]=>
  array(1) {
    ["e"]=>
    string(2) "ee"
  }
  [5]=>
  &array(1) {
    ["f"]=>
    string(2) "ff"
  }
}

*/

echo '=====================================', PHP_EOL;

foreach ($array as $item) {
	var_dump($item);
}

/*
array(1) {
  ["a"]=>
  string(2) "aa"
}
array(1) {
  ["b"]=>
  string(2) "bb"
}
array(1) {
  ["c"]=>
  string(2) "cc"
}
array(1) {
  ["d"]=>
  string(2) "dd"
}
array(1) {
  ["e"]=>
  string(2) "ee"
}
array(1) {
  ["e"]=>
  string(2) "ee" // => this one was changed.
}
*/


-- 
Edit bug report at https://bugs.php.net/bug.php?id=76336&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=76336&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=76336&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=76336&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=76336&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=76336&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=76336&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=76336&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=76336&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=76336&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=76336&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=76336&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=76336&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=76336&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76336&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=76336&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=76336&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=76336&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=76336&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=76336&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=76336&r=mysqlcfg