Bug #74450 [Opn]: Fetching the value of a constant triggers inconsistent behaviour
Edit report at https://bugs.php.net/bug.php?id=74450&edit=1
ID: 74450
User updated by: diego dot bindart at gmail dot com
Reported by: diego dot bindart at gmail dot com
-Summary: Fetching constant value triggers inconsistent
behaviour
+Summary: Fetching the value of a constant triggers
inconsistent behaviour
Status: Open
Type: Bug
Package: Apache2 related
Operating System: Linux Mint 18
PHP Version: 7.0.18
Block user comment: N
Private report: N
New Comment:
Editted the title to make the issue clearer
Previous Comments:
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[2017-04-15 21:27:50] diego dot bindart at gmail dot com
Description:
------------
I define a constant as case-insenstive and then define a capitalization variation of the same
constant. In between defines I echo the value of the constant *using the case-sensitive
capitalization*.
In the CLI it works as expected, but testing in the apache server gives me the right anser only
once, and then a different answers on succesive page reloads. The same happens if instead of echoing
I assign the constant value to a variable (e.g. $var = SOME_CONST).
Tested on Chrome, Opera and Firefox, using Apache 2.4.18 Ubuntu.
Steps to reproduce:
* execute the code below, as given, in a web server. You should get (as expected): 12
* reload the page (might need to do this several times) and you get instead: 11
----------------
Other things to note that I tested:
* it works as expected in the command line
* if you don't echo SOME_CONST before defining the case-sensitive variation, it works as
expected
* if you echo SOME_const (or any other capitalization variation) there's no bug either
* sometimes it needs one reload and sometimes many (never more than 3 or 4, though)
* after you get the bug, comment the first echo and you'll get the right result again; remove
the comment and you get the bug again after few reloads
* if I print the defined constants I see both constants with the right values (namely 1 and 2)
Test script:
---------------
define('sOmE_CoNsT', 1, true);
echo SOME_CONST; // Prints 1
define('SOME_CONST', 2);
echo SOME_CONST; // Prints 2
Expected result:
----------------
Consistently prints "12" on successive page loads
Actual result:
--------------
Prints "12" the first few times, then "11" on successive page reloads
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