#37153 [Opn->Bgs]: foreach on array of object, object is referenced not copied
| From: | mike@php.net | Date: | Fri, 21 Apr 2006 13:41:21 +0000 |
| Subject: | #37153 [Opn->Bgs]: foreach on array of object, object is referenced not copied | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-96066@lists.php.net to get a copy of this message | ||
ID: 37153
Updated by: mike@php.net
Reported By: sirber at webernic dot com
-Status: Open
+Status: Bogus
Bug Type: Unknown/Other Function
Operating System: Linuix 2.6.13
PHP Version: 5.1.2
New Comment:
Sorry, but your problem does not imply a bug in PHP itself. For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system
is not the
appropriate forum for asking support questions. Due to the volume
of reports we can not explain in detail here why your report is not
a bug. The support channels will be able to provide an explanation
for you.
Thank you for your interest in PHP.
Objects are always passed by reference in PHP-5.
Previous Comments:
------------------------------------------------------------------------
[2006-04-21 13:39:27] martin at webernic dot com
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"
}
}
------------------------------------------------------------------------
[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"
}
}
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=37153&edit=1