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Doc Bug #76637 Default $_REQUEST is Misrepresented in Documentation
Submitted: 2018-07-18 10:10 UTC Modified: 2021-08-19 12:13 UTC
From: dor dot tumarkin at checkmarx dot com Assigned: cmb (profile)
Status: Not a bug Package: Documentation problem
PHP Version: 7.2.7 OS: Any
Private report: No CVE-ID: None
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 [2018-07-18 10:10 UTC] dor dot tumarkin at checkmarx dot com
Description:
------------
---
From manual page: http://www.php.net/reserved.variables.request
---

Documentation states the $_REQUEST is "An associative array that by default contains the contents of $_GET, $_POST and $_COOKIE."
In PHP 7.2.7 (and likely several versions lower), $_COOKIE is not part of $_REQUEST by default, though it could be re-enabled via php.ini. The default behavior is to only include $_GET and $_POST in request_order "due to security concerns", likely because adding C for $_COOKIES enables a wider breadth for value shadowing attacks.

Test script:
---------------
Not applicable.


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 [2021-08-19 12:13 UTC] cmb@php.net
-Status: Open +Status: Not a bug -Assigned To: +Assigned To: cmb
 [2021-08-19 12:13 UTC] cmb@php.net
Which sources populate $_REQUEST is determined by request_order,
which is empty by default, and in this case by variable_order,
which is "EGPCS" by default.  The fact that php.ini-development
and php.ini-production set request_order=GP is irrelevant here,
since nobody is required to use them.  As such, the documentation
is correct.
 
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