Bug #51791 [Bgs]: constant() failed to check undefined constant and php interpreter stoped

From: Date: Wed, 12 May 2010 22:09:29 +0000
Subject: Bug #51791 [Bgs]: constant() failed to check undefined constant and php interpreter stoped
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-150424@lists.php.net to get a copy of this message 
Edit report at http://bugs.php.net/bug.php?id=51791&edit=1

 ID:               51791
 User updated by:  iliavlad at mail dot ru
 Reported by:      iliavlad at mail dot ru
 Summary:          constant() failed to check undefined constant and php
                   interpreter stoped
 Status:           Bogus
 Type:             Bug
 Package:          Reproducible crash
 Operating System: Windows, Linux
 PHP Version:      5.3.2

 New Comment:

Hi Mike,

according to manual http://php.net/manual/en/function.constant.php
constant() eturns the value of the constant, or NULL if the constant is
not defined. And this happens with php 5.2 version. With php 5.3 there
is a fatal error and php interpreter stops. There are no words about
fatal error in manual.


Previous Comments:
------------------------------------------------------------------------
[2010-05-12 08:16:15] mike@php.net

Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to
report
a bug at http://bugs.php.net/how-to-report.php



------------------------------------------------------------------------
[2010-05-11 12:12:45] iliavlad at mail dot ru

Description:
------------
constant() failed to check undefined constant and php interpreter
stoped, but constant() should return NULL and php interpreter should
continue to work.

Test script:
---------------
class A 
{
    const B = 1;
}
var_dump(constant('A::B1'));
echo 5;


Expected result:
----------------
Warning: constant(): Couldn't find constant A::B1
NULL
5

Actual result:
--------------
>php -v 
PHP 5.3.2 (cli) (built: Mar 3 2010 19:40:13) 
Copyright (c) 1997-2010 The PHP Group 
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies 

>php -r "class A { const B = 1;} var_dump(@constant('A::B1')); echo 5;"


>php -r "class A { const B = 1;} var_dump(constant('A::B1')); echo 5;" 

Fatal error: Undefined class constant 'A::B1' in Command line code on
line 1 

Call Stack: 
0.0003 317608 1. {main}() Command line code:0 
0.0003 317688 2. constant() Command line code:1


------------------------------------------------------------------------



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