Req #51179 [NEW]: call_user_func() should take parameters by reference

From: Date: Tue, 02 Mar 2010 01:19:48 +0000
Subject: Req #51179 [NEW]: call_user_func() should take parameters by reference
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-148156@lists.php.net to get a copy of this message 
From:             
Operating system: 
PHP version:      5.2.13
Package:          Unknown/Other Function}
Bug Type:         Feature/Change Request
Bug description:call_user_func() should take parameters by reference

Description:
------------
Currently it's impossible to pass variable by reference to user callback
through call_user_func().
There's plenty of complaints about it on the Web.
Such missing possibility would be very useful.

As said in Bug #17309, the situation is not a bug because call_user_func()
takes its parameters by value.
Suggestion is to change call_user_func() signature & make it take 2nd &
following parameters by reference.

Test script:
---------------
<?php
function foo(&$arg) {
  $arg++;
}
$var = 0;
call_user_func("foo", $var);
echo $var; // echoes 0 instead of 1.
?>

Expected result:
----------------
1

Actual result:
--------------
0

-- 
Edit bug report at http://bugs.php.net/bug.php?id=51179&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=51179&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=51179&r=trysnapshot53
Try a snapshot (PHP 6.0):            http://bugs.php.net/fix.php?id=51179&r=trysnapshot60
Fixed in SVN:                        http://bugs.php.net/fix.php?id=51179&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=51179&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=51179&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=51179&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=51179&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=51179&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=51179&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=51179&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=51179&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=51179&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=51179&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=51179&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=51179&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=51179&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=51179&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=51179&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=51179&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=51179&r=mysqlcfg

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