From:             adam at e-nition dot com
Operating system: Linux
PHP version:      5.2.9
PHP Bug Type:     Scripting Engine problem
Bug description:  file_exists() returns false on paths using ../ in middle

Description:
------------
The file_exists() function returns false on files that do exist but use a
directory traversal in the path. Not at the start of the path, I mean in
the middle of the path. (This type of path works fine on the include
function)

Works fine on windows apache2.2.11 php5.2.9



Reproduce code:
---------------
(Example based on a file called 'real_file.php' being placed in a
directory called 'real_dir')

$test_path = 'real_dir/fake_dir/../real_file.php',

if (file_exists($test_path)) {
    echo 'File does exist<br />';
    echo (@include($test_path)) ? 'File included' : 'File NOT included';
} else {
    echo 'File does Not exist<br />';
    echo (@include($test_path)) ? 'File included' : 'File NOT included';
}

Expected result:
----------------
File does exist
File included

Actual result:
--------------
File does NOT exist
File included

-- 
Edit bug report at http://bugs.php.net/?id=48548&edit=1
-- 
Try a CVS snapshot (PHP 5.2):        
http://bugs.php.net/fix.php?id=48548&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):        
http://bugs.php.net/fix.php?id=48548&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):        
http://bugs.php.net/fix.php?id=48548&r=trysnapshot60
Fixed in CVS:                        
http://bugs.php.net/fix.php?id=48548&r=fixedcvs
Fixed in CVS and need be documented: 
http://bugs.php.net/fix.php?id=48548&r=needdocs
Fixed in release:                    
http://bugs.php.net/fix.php?id=48548&r=alreadyfixed
Need backtrace:                      
http://bugs.php.net/fix.php?id=48548&r=needtrace
Need Reproduce Script:               
http://bugs.php.net/fix.php?id=48548&r=needscript
Try newer version:                   
http://bugs.php.net/fix.php?id=48548&r=oldversion
Not developer issue:                 
http://bugs.php.net/fix.php?id=48548&r=support
Expected behavior:                   
http://bugs.php.net/fix.php?id=48548&r=notwrong
Not enough info:                     
http://bugs.php.net/fix.php?id=48548&r=notenoughinfo
Submitted twice:                     
http://bugs.php.net/fix.php?id=48548&r=submittedtwice
register_globals:                    
http://bugs.php.net/fix.php?id=48548&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=48548&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=48548&r=dst
IIS Stability:                       
http://bugs.php.net/fix.php?id=48548&r=isapi
Install GNU Sed:                     
http://bugs.php.net/fix.php?id=48548&r=gnused
Floating point limitations:          
http://bugs.php.net/fix.php?id=48548&r=float
No Zend Extensions:                  
http://bugs.php.net/fix.php?id=48548&r=nozend
MySQL Configuration Error:           
http://bugs.php.net/fix.php?id=48548&r=mysqlcfg

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