note 96730 added to reserved.variables
| From: | dev at 10e12 dot com | Date: | Sat, 13 Mar 2010 04:47:14 +0000 |
| Subject: | note 96730 added to reserved.variables | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-166990@lists.php.net to get a copy of this message | ||
This spawns off of
[Typer85 at gmail dot com] 18-Feb-2008 11:56
below mentioning some oddities about how
PHP_SELF worked in tests.
I believe you may have a fault in your windows setup.
I run Apache 2.2.1 and PHP 5.2.8 on
Win XP SP 3 32-bit just fine so the following
is written on a Win machine intended to work on
NIX boxes as well but I have yet to test this solution.
The only difference is the filepath in __FILE__ which
shows / instead of \
I hope this will help some newbies too, to find their
way around these things.
The following should mitigate issues with
$_SERVER[PHP_SELF] vs. __FILE__
The potential use for this code:
Add the code to the very beginning of
an included file and you won't have problems
with people trying to execute script paths
which should only be INCLUDES in your other pages.
Windows styled return on Apache Windows
The Calling File---
PHP_SELF --> /xr/index.php
The Included File---
__FILE__ --> C:\Program\Apache2.2\htdocs\subpath\included.php
<?php
/*
-------------------------------------------------
NOTE!
The script must be entered into the script page you
want to protect. It cannot run as an Include as this
would cause __FILE__ to always record the included
file and not the script page you wish to protect.
-------------------------------------------------
*/
$XProtect = __FILE__;
$pos =strripos($XProtect,'\\');
if ($pos === false){
$pos =strripos($XProtect,'/');
if ($pos !== false){
//get end of string based on NIX filesystem
$XProtect = substr($XProtect,$pos+1);
}else{
//now this is odd, you don't have a filesystem ???
/*leave as is & drop out or exit here if you want...
you decide*/
}
}else{ //must be a windows system
//get end of string based on WIN filesystem
$XProtect = substr($XProtect,$pos+1);
}
// keep only end of file according to PHP_SELF for check
$XFileExec = substr($_SERVER['PHP_SELF'],
strlen($_SERVER['PHP_SELF'])-strlen($XProtect));
//here comes the protective part...
//bail if calling page is the script itself
if ($XFileExec===$XProtect){Exit;}
?>
----
Server IP: 69.147.83.197
Probable Submitter: 212.181.164.190
----
Manual Page -- http://www.php.net/manual/en/reserved.variables.php
Edit -- https://master.php.net/note/edit/96730
Del: integrated -- https://master.php.net/note/delete/96730/integrated
Del: useless -- https://master.php.net/note/delete/96730/useless
Del: bad code -- https://master.php.net/note/delete/96730/bad+code
Del: spam -- https://master.php.net/note/delete/96730/spam
Del: non-english -- https://master.php.net/note/delete/96730/non-english
Del: in docs -- https://master.php.net/note/delete/96730/in+docs
Del: other reasons-- https://master.php.net/note/delete/96730
Reject -- https://master.php.net/note/reject/96730
Search -- https://master.php.net/manage/user-notes.php