ID: 29245
User updated by: joei at mail dot com
Reported By: joei at mail dot com
Status: Bogus
Bug Type: *Regular Expressions
Operating System: Linux
PHP Version: 4.3.8
New Comment:
I think it should to be add to documents that if you want to match '-'
in character in the range, you have to place '-' at the first or '\-'
at the end of range.
Previous Comments:
------------------------------------------------------------------------
[2004-07-19 08:59:47] joei at mail dot com
It is not only '\-' appear at first but everywhere except at the end,
it doesn't match.
eg,
ereg('[\.\=\-]', 'a-b') = match
ereg('[\.\-\=]', 'a-b') = unmatch
------------------------------------------------------------------------
[2004-07-18 18:52:20] [EMAIL PROTECTED]
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
When - is the 1st character in the range it does not need
to be escaped, escaping it gives it special meaning.
------------------------------------------------------------------------
[2004-07-18 16:34:20] joei at mail dot com
Description:
------------
I found ereg function in php 4.3.8 doesn't match some expression that I
think it must be matched.
Look at example..
ereg('[\=\-]', 'a-b') = match
ereg('[\-\=]', 'a-b') = unmatch
I think 2 expressions is the same. But result is difference.
Reproduce code:
---------------
<?
echo "ereg('[\=\-]', 'a-b') = " ;
if (ereg('[\=\-]', 'a-b'))
echo "match";
else
echo "unmatch";
echo "<br>";
echo "ereg('[\-\=]', 'a-b') = " ;
if (ereg('[\-\=]', 'a-b'))
echo "match";
else
echo "unmatch";
echo "<br>";
?>
Expected result:
----------------
ereg('[\=\-]', 'a-b') = match
ereg('[\-\=]', 'a-b') = match
Actual result:
--------------
ereg('[\=\-]', 'a-b') = match
ereg('[\-\=]', 'a-b') = unmatch
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=29245&edit=1
