Bug #51174 [Com]: error "expected to be a reference" when $this referenced in an array property
Edit report at http://bugs.php.net/bug.php?id=51174&edit=1
ID: 51174
Comment by: jeremy at tuxmachine dot com
Reported by: skrol29forum at gmail dot com
Summary: error "expected to be a reference" when $this
referenced in an array property
Status: Open
Type: Bug
Package: Scripting Engine problem
Operating System: Win7
PHP Version: 5.3
Block user comment: N
New Comment:
See also bug 50394.
Previous Comments:
------------------------------------------------------------------------
[2010-07-23 01:43:42] heis dot turtlemad at gmail dot com
Same failure running Php5.3.2 on FreeBSD8
david:~>php test.php
arg_array[0] is the
same instance than $this <br>
prop=1 <br>
arg_array[0] is the
same instance than $this <br>
Warning: Parameter 1 to f_test() expected to be a reference, value given
in /usr/home/david/test.php on line 15
------------------------------------------------------------------------
[2010-06-21 00:03:55] felipe@php.net
I can reproduce it.
array(1) {
[0]=>
&object(clsTest)#1 (2) {
["prop"]=>
int(0)
["arg_array"]=>
*RECURSION*
}
}
prop=1 <br>
array(1) {
[0]=>
object(clsTest)#1 (2) {
["prop"]=>
int(1)
["arg_array"]=>
*RECURSION*
}
}
PHP Warning: Parameter 1 to f_test() expected to be a reference, value
given
------------------------------------------------------------------------
[2010-03-01 08:24:57] skrol29forum at gmail dot com
I've inverted "Expected result" and "Actual result".
------------------------------------------------------------------------
[2010-03-01 00:08:16] skrol29forum at gmail dot com
Description:
------------
When $this is stored by reference in a PHP array, itself stored in a
property, then function call_user_func_array() is able to recognize the
reference only if called in the same local context where $this is
referenced. In other words, the reference seems to be lost for
call_user_func_array().
The bug does not occur with PHP 5.2,
It does occur with both PHP 5.3.0 and PHP 5.3.1. Not yet tested with PHP
5.3.2
Note that if we use a global variable instead of a property, then the
bug does not occur.
Reproduce code:
---------------
<?php
function f_test(&$obj) {
$obj->prop++;
echo "prop=".$obj->prop." <br>\r\n";
}
class clsTest {
public $prop = 0;
public $arg_array = false;
function meth() {
if ($this->arg_array===false) $this->arg_array = array(&$this);
echo 'arg_array[0] '.(($this->arg_array[0]===$this) ? ' is the same
instance' : ' is not the same instance').' than $this'."
<br>\r\n";
call_user_func_array('f_test', $this->arg_array);
}
}
$oTest = new clsTest;
$oTest->meth(); // OK
$oTest->meth(); // ERR
?>
Expected result:
----------------
arg_array[0] is the same instance than $this
prop=1
arg_array[0] is the same instance than $this
Warning: Parameter 1 to f_test() expected to be a reference, value given
in D:\www\bug.php on line 14
Actual result:
--------------
arg_array[0] is the same instance than $this
prop=1
arg_array[0] is the same instance than $this
prop=2
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/bug.php?id=51174&edit=1
Thread (7 messages)