| Vl409 At Yandex Dot Ru 2005-02-02, 3:57 pm |
| ID: 31798
User updated by: vl409 at yandex dot ru
Reported By: vl409 at yandex dot ru
Status: Open
Bug Type: Documentation problem
Operating System: linux-2.4.25,freebsd 4.10
PHP Version: 4.3.10
New Comment:
I thought about this problem and think that documentation should better
explain how objects in PHP are created.
I removed set_error_handler() call from constructor to method of error
handling class and called this method right after object creation. This
works.
So, what we should understand, is when object is actually created ?
It seems to me that when in constructor i assign values to $this->smth,
$this is not the same to what returned when i call $obj=new Something,
that`s why set_error_handler(&$obj,"method") doesn`t work in this
case.
am i right? =)
Previous Comments:
------------------------------------------------------------------------
[2005-02-01 22:13:42] sniper@php.net
reclassified
------------------------------------------------------------------------
[2005-02-01 21:55:05] vl409 at yandex dot ru
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 this bug report at http://bugs.php.net/?id=31798&edit=1
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