From: bloudon at townnews dot com
Operating system: Slackware Linux 10
PHP version: 5CVS-2006-08-07 (snap)
PHP Bug Type: PCRE related
Bug description: Match-all-or-none pattern in preg_replace duplicates repl.
text
Description:
------------
When using preg_replace with a pattern of '/(.*)/' or similar, the
returned string will contain two instances of the replacement text, with
the second instance appended to the first and given empty backreferences.
This behavior does not occur when the pattern is anchored to the start of
the string: '/^(.*)/'.
./configure --with-apxs --enable-versioning --enable-memory-limit
--with-mysql=/usr --enable-xslt --with-xslt-sablot --with-gd
--with-jpeg-dir=/usr --with-zlib-dir=/usr --with-ttf=/usr
--with-freetype-dir=/usr --enable-gd-native-ttf --enable-bcmath
--with-mime-magic
Reproduce code:
---------------
<?php
echo preg_replace('/(.*)/', 'a$1b', 'foo') ."\n";
echo preg_replace('/(.*)$/', 'a$1b', 'foo') ."\n";
echo preg_replace('/^(.*)/', 'a$1b', 'foo') ."\n";
echo preg_replace('/^(.*)$/', 'a$1b', 'foo') ."\n";
echo preg_replace('/.*/', 'ab', 'foo') ."\n";
echo preg_replace('/f*/', 'ab', 'foo') ."\n";
?>
Expected result:
----------------
afoob
afoob
afoob
afoob
ab
aboo
Actual result:
--------------
afoobab
afoobab
afoob
afoob
abab
ababoaboab
--
Edit bug report at http://bugs.php.net/?id=38368&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=38368&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=38368&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=38368&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=38368&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=38368&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=38368&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=38368&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=38368&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=38368&r=support
Expected behavior: http://bugs.php.net/fix.php?id=38368&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=38368&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=38368&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=38368&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=38368&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=38368&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=38368&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=38368&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=38368&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=38368&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=38368&r=mysqlcfg
