ID: 24910
Updated by: [EMAIL PROTECTED]
Reported By: greg at chiaraquartet dot net
Status: Bogus
Bug Type: Arrays related
Operating System: Windows XP
PHP Version: 4.3.2
New Comment:
The reason this is a bug is this code deletes the $GLOBALS array, and
someone might do it by accident:
<?php
function stupid()
{
global $GLOBALS;
var_dump($GLOBALS); // outputs NULL
}
stupid();
?>
Someone just posted to php.general asking about this exact issue, which
is why I posted the bug. Last I checked, the definition of a bug is
unexpected behavior, and this qualifies. It's rare, but perhaps there
is something more critical hidden in the fact that this doesn't work?
Since you're insistent, I'll leave this as bogus, but I strongly
encourage you to reconsider
Note that this code works as expected:
<?php
function worksforsomereason()
{
global $GLOBALS;
var_dump($GLOBALS);
}
worksforsomereason();
$GLOBALS;
?>
Once $GLOBALS has been overwritten, it is irretrievable within function
scope. At the very least, a warning or notice should be thrown. This
is a bug. If it is not to be fixed, the documentation might use a
warning for dummies.
Greg
Previous Comments:
------------------------------------------------------------------------
[2003-08-01 15:49:16] [EMAIL PROTECTED]
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
First of all accessing $GLOBALS as $GLOBALS['GLOBALS'] is just plain
wrong, you should just use $GLOBALS. If you look @ var_dump($GLOBALS)
you'll see ["GLOBALS"] is infact a reference to itself, &array().
You could do something like
$GLOBALS['GLOBALS']['GLOBALS']['GLOBALS']['_ENV'] and it would work
because each globals array contains a reference to itself.
This reference is only avaliable inside the global (main()) scope,
which is why you cannot access it from inside the function.
------------------------------------------------------------------------
[2003-08-01 15:38:43] [EMAIL PROTECTED]
an interesting thing: the following code does work as expected.
Perhaps the index is not set unless $GLOBALS is accessed globally?
function not_super()
{
// var_dump($GLOBALS['GLOBALS']);
var_dump(isset($GLOBALS['GLOBALS']));
$a = array_keys($GLOBALS);
var_dump(isset($a['GLOBALS']));
}
not_super();
// var_dump(isset($GLOBALS['GLOBALS']));
$a = array_keys($GLOBALS);
// var_dump(isset($a['GLOBALS']));
------------------------------------------------------------------------
[2003-08-01 15:32:34] [EMAIL PROTECTED]
This is not bogus. Did you try the code? The whole point is that in a
function, $GLOBALS['GLOBALS'] !== $GLOBALS. It should be the same.
In global scope, $GLOBALS['GLOBALS'] === $GLOBALS
Greg
------------------------------------------------------------------------
[2003-08-01 15:23:54] [EMAIL PROTECTED]
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
$GLOBALS['GLOBALS'] is actually a reference to $GLOBALS if you want to
access the globals just use $GLOBALS.
------------------------------------------------------------------------
[2003-08-01 14:47:52] greg at chiaraquartet dot net
Description:
------------
the $GLOBALS variables contains indexes to every superglobal except
'GLOBALS' in function scope. In global scope, it contains the
'GLOBALS' index as a self-reference
Reproduce code:
---------------
<?php
function blah() {
var_dump($GLOBALS['GLOBALS']);
}
blah();
?>
Expected result:
----------------
var_dump() of the $GLOBALS superglobal
Actual result:
--------------
Notice: Undefined index: GLOBALS in c:\web pages\chiara\a1.php on line
3
NULL
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=24910&edit=1
