From: rehsack at liwing dot de
Operating system: FreeBSD 5.1 i386
PHP version: 4.3.3RC2
PHP Bug Type: *General Issues
Bug description: call_user_func ignores requirement of references
Description:
------------
The method call_user_func ignores requirement of called
function takes it's arguments as reference. The results
in several times very ugly and hard to find bugs, eg. if
you use a template pattern combined with composite to
control child templates and want to do an action in each
child object and require to work on current data copy.
Either, if call_user_func internally is able to be called
by reference, some programs could be speed up, too (because
of the loose of expensive string copies)
This bug may related to #24631 but seems to have another
background. I can submit a more complicated example using
templates and a composite object to illustrate the problem.
Enabling call-time references in php.ini would solve this
problem by don't write a warning but I don't think it's
a good way to solve...
Reproduce code:
---------------
<?PHP
function nextId( &$id )
{
$id += 1;
}
$id = 1;
echo "before call_user_func id=$id\n";
call_user_func( "nextId", $id );
echo "after call_user_func id=$id\n";
call_user_func_array( "nextId", array( &$id ) );
echo "after call_user_func_array id=$id\n";
?>
Expected result:
----------------
before call_user_func id=1
after call_user_func id=2
after call_user_func_array id=3
Actual result:
--------------
before call_user_func id=1
after call_user_func id=1
after call_user_func_array id=2
--
Edit bug report at http://bugs.php.net/?id=24931&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=24931&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=24931&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=24931&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=24931&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=24931&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=24931&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=24931&r=support
Expected behavior: http://bugs.php.net/fix.php?id=24931&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=24931&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=24931&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=24931&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=24931&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=24931&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=24931&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=24931&r=gnused
