From:             php at trancer dot nl
Operating system: Debian Linux
PHP version:      4.3.3
PHP Bug Type:     Output Control
Bug description:  ob_start callback function changes cwd

Description:
------------
A script that does file_get_contents or file in the callback function of
ob_start wont work. The file_get_contents function cant open the file. 

<?php 
    // Ob callback 
    function ob($buffer) 
    { 
        return file_get_contents('open.txt'); 
    } 
    ob_start('ob'); 
?>

The behaviour is so because the callback sets its cwd to the root of the
disk instead of the folder the script was called from. 

If I copy the file I want to open to my root it can open, otherwise it
will throw me this error.

Warning: file_get_contents(open.txt): failed to open stream: No such file
or directory in /var/www/test.php on line 6 

Specifying the full path works. Could be a possible bug in the callback,
otherwise a documentation problem because I was unable to find it anywhere
in the docs.


Reproduce code:
---------------
<?php 
    // Ob callback 
    function ob($buffer) 
    { 
        return file_get_contents('open.txt'); 
    } 
    ob_start('ob'); 
?>

Expected result:
----------------
The content of open.txt

Actual result:
--------------
Warning: file_get_contents(open.txt): failed to open stream: No such file
or directory in /var/www/test.php on line 6 

-- 
Edit bug report at http://bugs.php.net/?id=26073&edit=1
-- 
Try a CVS snapshot (php4):  http://bugs.php.net/fix.php?id=26073&r=trysnapshot4
Try a CVS snapshot (php5):  http://bugs.php.net/fix.php?id=26073&r=trysnapshot5
Fixed in CVS:               http://bugs.php.net/fix.php?id=26073&r=fixedcvs
Fixed in release:           http://bugs.php.net/fix.php?id=26073&r=alreadyfixed
Need backtrace:             http://bugs.php.net/fix.php?id=26073&r=needtrace
Try newer version:          http://bugs.php.net/fix.php?id=26073&r=oldversion
Not developer issue:        http://bugs.php.net/fix.php?id=26073&r=support
Expected behavior:          http://bugs.php.net/fix.php?id=26073&r=notwrong
Not enough info:            http://bugs.php.net/fix.php?id=26073&r=notenoughinfo
Submitted twice:            http://bugs.php.net/fix.php?id=26073&r=submittedtwice
register_globals:           http://bugs.php.net/fix.php?id=26073&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=26073&r=php3
Daylight Savings:           http://bugs.php.net/fix.php?id=26073&r=dst
IIS Stability:              http://bugs.php.net/fix.php?id=26073&r=isapi
Install GNU Sed:            http://bugs.php.net/fix.php?id=26073&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=26073&r=float

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