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Bug #48478 Super-globals cannot be accessed with literal keys
Submitted: 2009-06-05 11:22 UTC Modified: 2013-02-18 00:33 UTC
From: arancaytar dot ilyaran at gmail dot com Assigned:
Status: No Feedback Package: Arrays related
PHP Version: 6CVS-2009-06-05 (snap) OS: Ubuntu 9.04
Private report: No CVE-ID: None
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From: arancaytar dot ilyaran at gmail dot com
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 [2009-06-05 11:22 UTC] arancaytar dot ilyaran at gmail dot com
Description:
------------
In the current snapshot of PHP6, the values stored in the "internal" $_SERVER and $_ENV super-globals cannot be accessed using literal string keys like $_SERVER['SCRIPT_NAME'].

This is because the array keys in these super-globals are of type "string", while literals in the script implicitly are of type "unicode".

This problem does not occur in $_GET, $_POST and $_REQUEST, because the request parameter names are implicitly in unicode too.

Reproduce code:
---------------
// This will fail and print a notice:
print $_ENV['SHELL'] . "\n";

// This works:
foreach($_ENV as $key => $value)
  if ($key == 'SHELL')
    print $_ENV[$key] . "\n";

// This will work:
foreach ($_ENV as $key => $value)
  $_ENV["$key"] = $value;
print $_ENV['SHELL'] . "\n";

Expected result:
----------------
/bin/bash
/bin/bash
/bin/bash

Actual result:
--------------
Notice: Undefined index: SHELL in - on line 2

/bin/bash
/bin/bash


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 [2009-06-06 10:57 UTC] arancaytar dot ilyaran at gmail dot com
Failed to add; this will also work:

print $_SERVER[(binary)'SCRIPT_NAME'];

That's pretty nasty to have to do consistently though. You could work around it by defining constants for all keys:

define(SCRIPT_NAME, (binary)'SCRIPT_NAME');
print $_SERVER[SCRIPT_NAME];

But that's also ugly. It'd be more convenient if the keys were in Unicode by default.
 [2010-06-08 15:36 UTC] tony2001@php.net
-Status: Open +Status: Feedback
 [2010-06-08 15:36 UTC] tony2001@php.net
Please try using this snapshot:

  http://snaps.php.net/php-trunk-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/


 [2013-02-18 00:33 UTC] php-bugs at lists dot php dot net
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
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change the status of the bug back to "Open". Thank you.
 
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