From:             
Operating system: Ubuntu 10.04
PHP version:      5.3.2
Package:          Scripting Engine problem
Bug Type:         Bug
Bug description:fatal error with call_user_func and function with by-reference 
arguments

Description:
------------
I have a Drupal site. It worked ok until I upgraded php to 5.3.2. It simply
fails, nothing is written to the error log or on the screen.



I tracked down the problem to the following point: 

 * in some file, there is this call: 

     return call_user_func($hook_function, $variables, $suggestions);

 where $hook_function is _phptemplate_page

 * _phptemplate_page function is defined as: 

    function _phptemplate_page(&$variables, &$suggestions) {

     ....

    }

If I remove the & before variables, the site works. I know the by-reference
variable behavior changed in 5.3.2 from 5.2, but in this case, the actual
parameters are still 2 variables (not constants).



Cheers,

Andrei

Test script:
---------------
<?php



function testfnc1($x) {

  echo "testfnc1: $x ";

}



function testfnc2(&$x) {

  echo "testfnc2: $x ";

}



$y = 'works';

call_user_func('testfnc1', $y);

call_user_func('testfnc2', $y);

Expected result:
----------------
testfnc1: works testfnc2: works 

Actual result:
--------------
testfnc1: works 

-- 
Edit bug report at http://bugs.php.net/bug.php?id=52277&edit=1
-- 
Try a snapshot (PHP 5.2):            
http://bugs.php.net/fix.php?id=52277&r=trysnapshot52
Try a snapshot (PHP 5.3):            
http://bugs.php.net/fix.php?id=52277&r=trysnapshot53
Try a snapshot (trunk):              
http://bugs.php.net/fix.php?id=52277&r=trysnapshottrunk
Fixed in SVN:                        
http://bugs.php.net/fix.php?id=52277&r=fixed
Fixed in SVN and need be documented: 
http://bugs.php.net/fix.php?id=52277&r=needdocs
Fixed in release:                    
http://bugs.php.net/fix.php?id=52277&r=alreadyfixed
Need backtrace:                      
http://bugs.php.net/fix.php?id=52277&r=needtrace
Need Reproduce Script:               
http://bugs.php.net/fix.php?id=52277&r=needscript
Try newer version:                   
http://bugs.php.net/fix.php?id=52277&r=oldversion
Not developer issue:                 
http://bugs.php.net/fix.php?id=52277&r=support
Expected behavior:                   
http://bugs.php.net/fix.php?id=52277&r=notwrong
Not enough info:                     
http://bugs.php.net/fix.php?id=52277&r=notenoughinfo
Submitted twice:                     
http://bugs.php.net/fix.php?id=52277&r=submittedtwice
register_globals:                    
http://bugs.php.net/fix.php?id=52277&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=52277&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=52277&r=dst
IIS Stability:                       
http://bugs.php.net/fix.php?id=52277&r=isapi
Install GNU Sed:                     
http://bugs.php.net/fix.php?id=52277&r=gnused
Floating point limitations:          
http://bugs.php.net/fix.php?id=52277&r=float
No Zend Extensions:                  
http://bugs.php.net/fix.php?id=52277&r=nozend
MySQL Configuration Error:           
http://bugs.php.net/fix.php?id=52277&r=mysqlcfg

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