Bug #54195 [Csd->Bgs]: The notorious "Call to a member function .. on a non-object" fatal error
Edit report at http://bugs.php.net/bug.php?id=54195&edit=1
ID: 54195
Updated by: cataphract@php.net
Reported by: landeholm at gmail dot com
Summary: The notorious "Call to a member function .. on a
non-object" fatal error
-Status: Closed
+Status: Bogus
Type: Bug
Package: Scripting Engine problem
Operating System: Irrelevant
PHP Version: 5.3.5
Block user comment: N
Private report: N
Previous Comments:
------------------------------------------------------------------------
[2011-03-09 17:14:57] landeholm at gmail dot com
NVM. These errors are catchable by the shutdown function. I tested in a
context with errors suppression enabled.
------------------------------------------------------------------------
[2011-03-09 17:05:18] tyra3l at gmail dot com
I've mentioned this on the list, but to be archived:
AFAIK register_shutdown_function should be called on every errors, even
on the fatal ones, and it does.
at least for me, both on windows, and linux:
tyrael@devel-tyrael:~/c$ php -f fatal.php
PHP Fatal error: Call to a member function bar() on a non-object in
/home/tyrael/c/fatal.php on line 9
PHP Stack trace:
PHP 1. {main}() /home/tyrael/c/fatal.php:0
Houston we have a problem: Array
(
[type] => 1
[message] => Call to a member function bar() on a non-object
[file] => /home/tyrael/c/fatal.php
[line] => 9
)
as you can see from the output of the example code provided by Hannes
Landeholm, it does called on the fatal error.
if it doesn't work for Hannes, then I think that there are some
difference in our setup/configuration.
Tyrael
------------------------------------------------------------------------
[2011-03-08 15:40:17] landeholm at gmail dot com
Description:
------------
I had this problem a million times. It's very easy to accidentally
invoke "Fatal Error: Call to a member function .. on a non-object". The
problem is that this triggers an error so fatal that it can't even be
caught by the shutdown function. This recently gave me a huge headache
in a production system where an obscure bug where a variable contain
null which was called on invoked a silent crash. It's a headache because
I run everything in a framework with great wrappers for error
handling/detection that are suppose to send me an email when obscure
bugs get tripped. This obviously doesn't work when the PHP commits
seppuku and explodes.
I don't see any reason for this error to be that fatal. Sure, keep the
error fatal but at least allow the shutdown function to catch it.
Test script:
---------------
\register_shutdown_function(function(){
$e = \error_get_last();
if (!\is_null($e))
die('Houston we have a problem: ' . \print_r($e, true));
});
$hello = null;
$hello->bar();
Expected result:
----------------
Houston we have a problem: Array
(
...
Actual result:
--------------
Fatal error: Call to a member function bar() on a non-object in ...
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/bug.php?id=54195&edit=1
Thread (5 messages)