From: porost at gazeta dot pl
Operating system: Windows XP SP1, Apache/2.0.48
PHP version: 4.3.9
PHP Bug Type: *Regular Expressions
Bug description: ereg_replace() removes the last capital letter
Description:
------------
I've found out that some combinations of special characters in regular
expressions cause the ereg_replace to cut the last letter in the string,
but only if it is a capital letter.
Here is the code:
<?php
echo ereg_replace('[\+-\.,]$','','MTM') . "<br>";
echo ereg_replace('[\+-\.,]$','','mtm') . "<br>";
echo ereg_replace('[\+-\.,]$','','MTm') . "<br>";
echo ereg_replace('[\+-\.,]$','','mtM') . "<br>";
?>
IMHO one should see:
MTM
mtm
MTm
mtM
but in 2 cases, the last (capital) letter is cut out and you see:
MT
mtm
MTm
mt
There is an easy fix for this problem - you just have to change the
regular expression from '[\+-\.,]' to '[-\.\+,]$' and voila - everything
is OK.
Reproduce code:
---------------
<?php
echo ereg_replace('[-\.\+,]$','','MTM') . "<br>";
echo ereg_replace('[-\.\+,]$','','mtm') . "<br>";
echo ereg_replace('[-\.\+,]$','','MTm') . "<br>";
echo ereg_replace('[-\.\+,]$','','mtM') . "<br>";
echo ereg_replace('[\+-\.,]$','','MTM') . "<br>";
echo ereg_replace('[\+-\.,]$','','mtm') . "<br>";
echo ereg_replace('[\+-\.,]$','','MTm') . "<br>";
echo ereg_replace('[\+-\.,]$','','mtM') . "<br>";
?>
Expected result:
----------------
MTM
mtm
MTm
mtM
MTM
mtm
MTm
mtM
Actual result:
--------------
MTM
mtm
MTm
mtM
MT
mtm
MTm
mt
--
Edit bug report at http://bugs.php.net/?id=30347&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=30347&r=trysnapshot4
Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=30347&r=trysnapshot50
Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=30347&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=30347&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=30347&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=30347&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=30347&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=30347&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=30347&r=support
Expected behavior: http://bugs.php.net/fix.php?id=30347&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=30347&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=30347&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=30347&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=30347&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=30347&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=30347&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=30347&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=30347&r=float
MySQL Configuration Error: http://bugs.php.net/fix.php?id=30347&r=mysqlcfg
