#31798 [NEW]: set_error_handler() object argument passed by value,not reference
| From: | vl409 at yandex dot ru | Date: | Tue, 01 Feb 2005 20:55:06 +0000 |
| Subject: | #31798 [NEW]: set_error_handler() object argument passed by value,not reference | ||
| Groups: | php.bugs | ||
| Request: | Send a blank email to php-bugs+get-73210@lists.php.net to get a copy of this message | ||
From: vl409 at yandex dot ru
Operating system: linux-2.4.25,freebsd 4.10
PHP version: 4.3.10
PHP Bug Type: *General Issues
Bug description: set_error_handler() object argument passed by value,not reference
Description:
------------
Possibly,it`s a duplicate bug of
Bug #25128 set_error_handler not sending reference
http://bugs.php.net/bug.php?id=25128&edit=2
I tried to write my own class for handling errors in php and
found that if i call set_error_handler with argument, being
object(&$this), it is passed by value, not by reference.
This is strange, because function set_error_handler is
declared same as call_user_func, but behaves differently.
as defined in manual:
mixed call_user_func ( callback function...)
mixed set_error_handler ( callback error_handler...)
I tested example on FreeBSD 4.1/PHP 4.3.10 and Linux 2.4.25/PHP 4.3.5
Code,demonstrating this, provided below.
P.S. If it`s a duplication, then you can mean this report as BUG IN
DOCUMENTATION! I found that i wanted to do almost the same as man in Bug
#25128, but due to lack of documentation, spent a lot of time for
nothing...
Reproduce code:
---------------
<?php
class error_handler
{ var $error_count;
function error_handler(){
$this->error_count=0;
set_error_handler(array(&$this,'handler'));
echo "<b>New error handler registered!</b><br>";
}
function handler()
{
echo "Cought an error! increasing counter!<br>";
$this->error_count++;}
function show(){
echo "This object handled ".$this->error_count." errors<br>";
}
}
$x=new error_handler;
$x->show();
trigger_error("Ooops!",E_USER_ERROR);
$x->show();
trigger_error("Ooops!",E_USER_ERROR);
$x->show();
echo "<b>called by call_user_func:</b><br>";
call_user_func(array(&$x, "handler"));
$x->show();
echo "<b>called manually</b><br>";
$x->handler();
$x->show();
?>
Expected result:
----------------
New error handler registered!
This object handled 0 errors
Cought an error! increasing counter!
This object handled 1 errors
Cought an error! increasing counter!
This object handled 2 errors
called by call_user_func:
Cought an error! increasing counter!
This object handled 3 errors
called manually
Cought an error! increasing counter!
This object handled 4 errors
Actual result:
--------------
New error handler registered!
This object handled 0 errors
Cought an error! increasing counter!
This object handled 0 errors
Cought an error! increasing counter!
This object handled 0 errors
called by call_user_func:
Cought an error! increasing counter!
This object handled 1 errors
called manually
Cought an error! increasing counter!
This object handled 2 errors
--
Edit bug report at http://bugs.php.net/?id=31798&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=31798&r=trysnapshot4
Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=31798&r=trysnapshot50
Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=31798&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=31798&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=31798&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=31798&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=31798&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=31798&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=31798&r=support
Expected behavior: http://bugs.php.net/fix.php?id=31798&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=31798&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=31798&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=31798&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=31798&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=31798&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=31798&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=31798&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=31798&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=31798&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=31798&r=mysqlcfg