#37153 [Com]: foreach on array of object, object is referenced not copied

[martin at webernic dot com]

 ID:               37153
 Comment by:       martin at webernic dot com
 Reported By:      sirber at webernic dot com
 Status:           Open
 Bug Type:         Unknown/Other Function
 Operating System: Linuix 2.6.13
 PHP Version:      5.1.2
 New Comment:

Same result with a copy of the array.

Source array and the copy are modified.
Reproduce code:
---------------
$aTmp = array();
$oTmp = new stdClass();
$oTmp->id = 1;
$aTmp[] = $oTmp;
$oTmp = new stdClass();
$oTmp->id = 2;

$aTmp3 = $aTmp
foreach ($aTmp3 as $iKey => $oTest)
        $oTest->id = 'tea';

var_dump($aTmp, $aTmp3);

Expected result:
----------------
array(2) {
  [0]=>
  object(stdClass)#1 (1) {
    ["id"]=>
    int(1)
  }
  [1]=>
  object(stdClass)#2 (1) {
    ["id"]=>
    int(2)
  }
}
array(2) {
  [0]=>
  object(stdClass)#1 (1) {
    ["id"]=>
    int(1)
  }
  [1]=>
  object(stdClass)#2 (1) {
    ["id"]=>
    int(2)
  }
}
Actual result:
--------------
array(2) {
  [0]=>
  object(stdClass)#1 (1) {
    ["id"]=>
    string(3) "tea"
  }
  [1]=>
  object(stdClass)#2 (1) {
    ["id"]=>
    string(3) "tea"
  }
}
array(2) {
  [0]=>
  object(stdClass)#1 (1) {
    ["id"]=>
    string(3) "tea"
  }
  [1]=>
  object(stdClass)#2 (1) {
    ["id"]=>
    string(3) "tea"
  }
}


Previous Comments:
------------------------------------------------------------------------

[2006-04-21 13:33:10] sirber at webernic dot com

Description:
------------
When you foreach an array of object, if you modify the object, the
source is modified.

PHP4: work as expected
PHP5 with compatibility on: work as expected
PHP5: source gets modified

Reproduce code:
---------------
$aTmp = array();
$oTmp = new stdClass();
$oTmp->id = 1;
$aTmp[] = $oTmp;
$oTmp = new stdClass();
$oTmp->id = 2;
$aTmp[] = $oTmp;
$oTmp = new stdClass();
$oTmp->id = 3;
$aTmp[] = $oTmp;
$oTmp = new stdClass();
$oTmp->id = 4;
$aTmp[] = $oTmp;

foreach ($aTmp as $iKey => $oTest)
        $oTest->id = 'tea';

var_dump($aTmp);

Expected result:
----------------
array(4) {
  [0]=>
  object(stdClass)#1 (1) {
    ["id"]=>
    int(1)
  }
  [1]=>
  object(stdClass)#2 (1) {
    ["id"]=>
    int(2)
  }
  [2]=>
  object(stdClass)#3 (1) {
    ["id"]=>
    int(3)
  }
  [3]=>
  object(stdClass)#4 (1) {
    ["id"]=>
    int(4)
  }
}

Actual result:
--------------
array(4) {
  [0]=>
  object(stdClass)#1 (1) {
    ["id"]=>
    string(3) "tea"
  }
  [1]=>
  object(stdClass)#2 (1) {
    ["id"]=>
    string(3) "tea"
  }
  [2]=>
  object(stdClass)#3 (1) {
    ["id"]=>
    string(3) "tea"
  }
  [3]=>
  object(stdClass)#4 (1) {
    ["id"]=>
    string(3) "tea"
  }
}


------------------------------------------------------------------------


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Edit this bug report at http://bugs.php.net/?id=37153&edit=1