php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Bug #26573 "?" repetition operator causing REG_BADRPT
Submitted: 2003-12-09 22:23 UTC Modified: 2003-12-10 19:28 UTC
From: torke at lagged dot ca Assigned:
Status: Not a bug Package: Regexps related
PHP Version: 4.3.4 OS: Slackware Linux (2.4.18)
Private report: No CVE-ID: None
View Developer Edit
Welcome back! If you're the original bug submitter, here's where you can edit the bug or add additional notes.
If you forgot your password, you can retrieve your password here.
Password:
Status:
Package:
Bug Type:
Summary:
From: torke at lagged dot ca
New email:
PHP Version: OS:

 

 [2003-12-09 22:23 UTC] torke at lagged dot ca 
Description:
------------
Using an expression such as ".*?" causes unwelcome results.

When the code below is put through a validator (http://regexlib.com/RETester.aspx) the regular expression matches the text correctly.

Configure Command  './configure' '--prefix=/usr' '--with-apxs=/usr/local/apache/bin/apxs' '--with-mod_charset' '--enable-force-cgi-redirect' '--enable-discard-path' '--with-config-file-path=/usr/local/apache/conf' '--enable-safe-mode' '--with-openssl' '--enable-bcmath' '--with-bz2' '--enable-calendar' '--enable-ctype' '--with-gdbm' '--enable-dbase' '--enable-ftp' '--with-gmp' '--with-mysql=/usr/local/mysql' '--with-xml=shared' '--with-readline=/usr' '--enable-shmop' '--enable-sockets' '--with-regex=php' '--enable-sysvsem' '--enable-sysvshm' '--enable-yp' '--enable-memory-limit' '--with-tsrm-pthreads' '--enable-shared' '--disable-debug' '--with-zlib=/usr' '--enable-exif' '--enable-xml' '--with-expat' '--with-imap=/usr/local/imap-2002b' '--with-mcrypt' '--with-gd' '--with-snmp'  

Reproduce code:
---------------
<? echo eregi("^.*?!.*?@.agged\.ca$","Torke!torke@lagged.ca"); ?>

Expected result:
----------------
That eregi example should return TRUE.

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2003-12-10 04:30 UTC] eru@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

.*? is not a valid regular expression, because the ? is referring to the * and not .* - Solution is to put parenthesis around the pattern, (.*)? works just fine. Apparently the regexp validator you used is faulty. Interesting read on that subject: http://www.pasc.org/interps/unofficial/db/p1003.2/pasc-1003.2-85.html
 [2003-12-10 19:28 UTC] pollita@php.net 
FWIW, .*? is a valid pattern.... In PCRE regex only.

The validator used probably assumed the pattern was PCRE and not EREG.

Use preg_match() instead.
 
PHP Copyright © 2001-2025 The PHP Group
All rights reserved. 		Last updated: Thu Jan 02 11:01:29 2025 UTC