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