From: skrol29 at freesurf dot fr
Operating system: any
PHP version: 5.2.5
PHP Bug Type: Output Control
Bug description: ob_start() changes variables and makes inconsistent serialize
Description:
------------
I call two functions, the one after the other. The first one is doing an
output redirection using ob_start(). The second one is just modifying a
variable. It is like the second function is executed just after the
ob_start() without waiting for the end of the first function. The second
function is called on an arbitrary local variable, for which the
serialization becomes inconsistent.
This bug has been found on PHP 5.2.5, but also 5.2.4, on Linux, Windows XP
and Vista.
Reproduce code:
---------------
$Txt = '';
f_Action1($Txt);
f_Action2($Txt);
echo $Txt;
function f_Action1(&$Txt) {
$z = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
echo "value before={".$z."} <br>\r\n";
ob_start();
echo "value after={".$z."} <br>\r\n"; // Bug here : it is like Action2()
has been applied to $z
echo "serialize={".serialize($z)."} <br>\r\n"; // Bug here : the
serialization is inconsistent between size and value.
$Txt = ob_get_contents();
ob_end_clean();
}
function f_Action2(&$Txt) {
$Txt = str_replace('ABCDEFGHIJKLMNOPQRSTUVWXYZ','abc',$Txt);
}
Expected result:
----------------
value before={ABCDEFGHIJKLMNOPQRSTUVWXYZ}
value after={ABCDEFGHIJKLMNOPQRSTUVWXYZ}
serialize={s:26:"ABCDEFGHIJKLMNOPQRSTUVWXYZ";}
Actual result:
--------------
value before={ABCDEFGHIJKLMNOPQRSTUVWXYZ}
value after={abc}
serialize={s:26:"abc";}
--
Edit bug report at http://bugs.php.net/?id=43700&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=43700&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=43700&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=43700&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=43700&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=43700&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=43700&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=43700&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=43700&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=43700&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=43700&r=support
Expected behavior: http://bugs.php.net/fix.php?id=43700&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=43700&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=43700&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=43700&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43700&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=43700&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=43700&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=43700&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=43700&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=43700&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=43700&r=mysqlcfg
