From: [EMAIL PROTECTED]
Operating system: SunOS
PHP version: 4.1.1
PHP Bug Type: PCRE related
Bug description: RE starting with (.*) might break
Here's the problem:
<? echo preg_match('/(.*)\d+\1/', 'ab1b'); ?>
It fails, but it really shouldn't. You can fool the engine into not having
the bug:
<? echo preg_match('/(?=)(.*)\d+\1/', 'ab1b'); ?>
The bug is thus: a regex that starts with .* can logically be made to
start with an implicit anchor to the beginning of the string. However,
this optimization can break the success of a regex if the .* is captured
(as above) and used later (the back-reference \1). I've contacted the
author of the PCRE package.
--
Edit bug report at: http://bugs.php.net/?id=14893&edit=1
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