Bug #61747 [Com]: User-defined error handler run despite at sign (@) error control operator

From: Date: Wed, 18 Apr 2012 03:35:33 +0000
Subject: Bug #61747 [Com]: User-defined error handler run despite at sign (@) error control operator
References: 1  Groups: php.bugs 
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Edit report at https://bugs.php.net/bug.php?id=61747&edit=1

 ID:                 61747
 Comment by:         anon at anon dot anon
 Reported by:        chealer at gmail dot com
 Summary:            User-defined error handler run despite at sign (@)
                     error control operator
 Status:             Not a bug
 Type:               Bug
 Package:            *General Issues
 PHP Version:        5.4.0
 Block user comment: N
 Private report:     N

 New Comment:

What a lot of fuss about nothing.


Previous Comments:
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[2012-04-17 02:06:55] chealer at gmail dot com

No what? It's not fine not to treat suppressed errors differently?

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[2012-04-17 02:00:40] rasmus@php.net

No, I think a custom error handler should make good use of the silence operator. 
There are all kinds of interesting things you can do with it. But yes, if you 
want to ignore it entirely, that is fine too.

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[2012-04-17 01:40:34] chealer at gmail dot com

Right. So, the documentation is saying custom error handlers should treat suppressed errors
differently. You are saying it is fine not to do that.
I think your version is right.

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[2012-04-17 00:59:34] rasmus@php.net

Right, it says "should" not "must". If you choose to not treat @ differently, 
then you obviously don't need to call error_reporting() from your handler.

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[2012-04-17 00:36:29] chealer at gmail dot com

You write:
If you choose to treat @-preceded errors like any other error, that's fine.

Yet http://ca3.php.net/manual/en/language.operators.errorcontrol.php
says a custom error handler should call error_reporting().
So why should a custom error handler which chooses to treat @-preceded errors like any other error
call error_reporting()?

You write:
By default PHP ignores errors from calls preceded by @, but since you are writing your own you
should have the power to override any and all such defaults.

I'm not sure I would say that custom error handlers *should* have the power to override error
suppression, but I certainly understand that it can be useful. In any case, offering that
flexibility doesn't have to make it more complicated to write a simple custom handler.
set_error_handler() could simply have an argument to control whether the callback is called even on
normally suppressed errors.

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the rest of the comments, please view the bug report online at

    https://bugs.php.net/bug.php?id=61747


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