From: mariusads at helpedia dot com
Operating system: Windows 2003 Web Edition
PHP version: 5.2.10
PHP Bug Type: PCRE related
Bug description: preg_match_all and \w issues
Description:
------------
I was under the impression that \w matches any word character, as in a-z,
A-Z, 0-9 and _ characters (documentation also says "some character codes
greater than 128 are used for accented letters, and these are matched by
\w" if a specific code page is used but it's not the case here, it's a
default PHP installation).
However, I have noticed the following issue and I'm not sure if it's a bug
in PHP or an error in the way I've written the regular expression in the
code below. As I understood regular expressions work, the code below should
not return any match but it does.
Reproduce code:
---------------
$text = 'start://abcd'.chr(255).chr(255).'efgh';
$results = preg_match_all('/(start:\/\/|finish:\/\/){1}([\w\x3A -
\x40]*)$/is',$text,$matches,PREG_OFFSET_CAPTURE);
var_dump($results,$matches);
Expected result:
----------------
The could above should return no matches. If the $ at the end is omitted,
I think it should return "start://abcd". Replacing \w with 0-9a-zA-Z_
produces the correct output.
Actual result:
--------------
Output of the above code:
int(1)
array(3) {
[0]=>
array(1) {
[0]=>
array(2) {
[0]=>
string(18) "start://abcd��efgh"
[1]=>
int(0)
}
}
[1]=>
array(1) {
[0]=>
array(2) {
[0]=>
string(8) "start://"
[1]=>
int(0)
}
}
[2]=>
array(1) {
[0]=>
array(2) {
[0]=>
string(10) "abcd��efgh"
[1]=>
int(8)
}
}
}
--
Edit bug report at http://bugs.php.net/?id=49247&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=49247&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=49247&r=trysnapshot53
Try a snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=49247&r=trysnapshot60
Fixed in SVN:
http://bugs.php.net/fix.php?id=49247&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=49247&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=49247&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=49247&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=49247&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=49247&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=49247&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=49247&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=49247&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=49247&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=49247&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49247&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=49247&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=49247&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=49247&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=49247&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=49247&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=49247&r=mysqlcfg
