Bug #49184 [Com]: INPUT_SERVER returns NULL for set variables (CLI)
Edit report at https://bugs.php.net/bug.php?id=49184&edit=1
ID: 49184
Comment by: cb at lathspell dot de
Reported by: m dot kurzyna at crystalpoint dot pl
Summary: INPUT_SERVER returns NULL for set variables (CLI)
Status: Verified
Type: Bug
Package: Filter related
Operating System: *
PHP Version: 5.*, 6 (2009-08-07)
Block user comment: N
Private report: N
New Comment:
If you don't care about fixing this bugs for *years*, please be at least so kind to document
that it is "not intended" to be used from CLI.
Previous Comments:
------------------------------------------------------------------------
[2014-02-05 12:55:52] jpswade at gmail dot com
It seems this bug still appears in PHP v5.4.24 and has done for over 6 years:
* http://www.php.net/manual/en/function.filter-input.php#77307
The general advice is "do not access superglobal $_server array directly" and the solution
is to use the filter_input() function instead.
* http://stackoverflow.com/questions/19767894/warning-do-not-access-superglobal-post-array-directly-on-netbeans-7-4-for-ph
However, this is a show stopper as you can't fully follow this through because all of the
INPUT_SERVER variables return NULL.
Is PHP serious about not accessing superglobals directly or is this incorrect advice?
------------------------------------------------------------------------
[2011-02-01 23:19:12] mjk at emmjaykay dot org
Looking at the filter_input() call in filter.c:747 on 5.3.5, it looks like the call to
zend_hash_find() fails.
(gdb) call zend_hash_display(input->value->ht)
SCRIPT_FILENAME <==> 0x537C323A
SCRIPT_NAME <==> 0x9B9D269A
PATH_TRANSLATED <==> 0x3A4E2C63
PHP_SELF <==> 0xBD55DE96
DOCUMENT_ROOT <==> 0x1DB85847
DOCUMENT_ROOT <==> 0x1DB85847
PATH_TRANSLATED <==> 0x3A4E2C63
SCRIPT_FILENAME <==> 0x537C323A
SCRIPT_NAME <==> 0x9B9D269A
PHP_SELF <==> 0xBD55DE96
(gdb)
So I guess ENV_NAME never gets put in there at all?
------------------------------------------------------------------------
[2009-08-07 10:20:34] jani@php.net
This is quite strange, propably caused by bad design of the filter extension.
------------------------------------------------------------------------
[2009-08-06 21:48:51] m dot kurzyna at crystalpoint dot pl
Description:
------------
This is very similar to #44779, however my report regards variables set as environment variables
when running CLI.
A variable is visible in $_SERVER but INPUT_SERVER returns NULL. Setting via SetEnv in apache and
when running as mod_php is fine.
Reproduce code:
---------------
<?php
var_dump(
filter_input(INPUT_SERVER,'ENV_NAME',FILTER_SANITIZE_STRING),
$_SERVER['ENV_NAME']
);
?>
Expected result:
----------------
$ ENV_NAME=var php /tmp/t.php
string(3) "var"
string(3) "var"
Actual result:
--------------
$ ENV_NAME=var php /tmp/t.php
NULL
string(3) "var"
------------------------------------------------------------------------
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