From: jfrim at idirect dot com
Operating system: Win98SE
PHP version: 5.2.0
PHP Bug Type: PCRE related
Bug description: PCRE engine unable to output NULL characters
Description:
------------
The PERL-compatible regular expression engine is unable to output NULL
characters correctly. This is evident with the preg_replace() function
(tested), and seems likely evident with other PCRE functions (untested)
according to some other but reports already submitted. Instead of
returning a NULL character, a literal '\0' sequence is returned.
Reproduce code:
---------------
<?php
$inputstring = "ASCII NUL\0, SOH\01, STX\02, ETX\03";
echo
preg_replace('/([\\x00-\\x02])/e',"'['.ord('\\1').']'",$inputstring);
?>
Expected result:
----------------
ASCII NUL[0], SOH[1], STX[2], ETX
(Note that "ETX" is immediately followed by ctrl char #3)
Actual result:
--------------
ASCII NUL[92], SOH[1], STX[2], ETX
(Note that "ETX" is immediately followed by ctrl char #3)
The "92" is present in place of what should be "0" because preg_replace()
incorrectly returns a literal '\0' sequence instead of a NULL character,
and the ord() function then returns the value of the literal backslash.
--
Edit bug report at http://bugs.php.net/?id=40395&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=40395&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=40395&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=40395&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=40395&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=40395&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=40395&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=40395&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=40395&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=40395&r=support
Expected behavior: http://bugs.php.net/fix.php?id=40395&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=40395&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=40395&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=40395&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40395&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=40395&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=40395&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=40395&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=40395&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=40395&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=40395&r=mysqlcfg
