From: skrol29forum at gmail dot com
Operating system: Win7
PHP version: 5.3.1
PHP Bug Type: Class/Object related
Bug description: error "expected to be a reference" when $this referenced in
an array property
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 bug report at http://bugs.php.net/?id=51174&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=51174&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=51174&r=trysnapshot53
Try a snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=51174&r=trysnapshot60
Fixed in SVN:
http://bugs.php.net/fix.php?id=51174&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=51174&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=51174&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=51174&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=51174&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=51174&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=51174&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=51174&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=51174&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=51174&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=51174&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=51174&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=51174&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=51174&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=51174&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=51174&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=51174&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=51174&r=mysqlcfg
