ID: 38368
Updated by: [EMAIL PROTECTED]
Reported By: bloudon at townnews dot com
-Status: Assigned
+Status: Bogus
Bug Type: PCRE related
Operating System: Slackware Linux 10
PHP Version: 5CVS-2006-08-07 (snap)
Assigned To: andrei
New Comment:
not a problem in PHP surely. And I would say this is expected (at least
the master Friedl convinved me so), as the engine will do a second
attempt to match and will indeed match the empty string (because of the
*)
Previous Comments:
------------------------------------------------------------------------
[2006-08-07 15:02:54] bloudon at townnews dot com
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 this bug report at http://bugs.php.net/?id=38368&edit=1
