From: mjs at beebo dot org
Operating system: OS X
PHP version: 5.2.9
PHP Bug Type: PCRE related
Bug description: /\Q$z\E/ matches every string
Description:
------------
The regular expression /\Q$z\E/ matches (as far as I can tell) every
string. It certainly matches some strings it shouldn't match:
preg_match("/\Q$z\E/", "") -> MATCH (WRONG!)
preg_match("/\Q$z\E/", "qqqq") -> MATCH (WRONG!)
preg_match("/\Q $z\E/", "qqqq") -> NO MATCH (CORRECT)
preg_match("/\Q $z\E/", " $z") -> MATCH (CORRECT)
preg_match("/\Q\$z\E/", "\$z") -> MATCH (CORRECT)
preg_match("/\Q\$z\E/", "$z") -> NO MATCH (CORRECT)
The problem seems to occur if the regular expression begins with the
string "\Q$" followed by at least one character.
--
Edit bug report at http://bugs.php.net/?id=48589&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=48589&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=48589&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=48589&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=48589&r=fixedcvs
Fixed in CVS and need be documented:
http://bugs.php.net/fix.php?id=48589&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=48589&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=48589&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=48589&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=48589&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=48589&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=48589&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=48589&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=48589&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=48589&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=48589&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=48589&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=48589&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=48589&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=48589&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=48589&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=48589&r=mysqlcfg
