From: jrf_temp_2003 at comcast dot net
Operating system: Linux
PHP version: 5.2.5
PHP Bug Type: Feature/Change Request
Bug description: Char-wise v byte-wise string indexing
Description:
------------
When I "upgraded" to multibyte char encoding and functions, I discovered
that I could no longer rely on $s{strlen($s)-1} to access the last
character in a string. Strlen correctly counted only whole chars, but the
indexing came up short by the number of double-wide chars in the string and
hit the wrong char. I could (and did) patch my scripts with rtrim, but
others may not be so lucky. I had an idea...
Suggestion:
Some time ago, square brackets were deprecated in favor of curly braces
for individual char access in a string. Could both be employed, each for a
different purpose? Could curly braces to be used for multibyte-sensitive
indexing? Could square brackets, as always, offer simple byte-wise access?
Reproduce code:
---------------
// After a loop chains field names + commas...
$sql{strlen($sql)-1} = ' '; // Replace last trailing comma with a space
$sql.= $where_clause;
// Because my aim was at the very end of a string, rtrim could solve
// my problem. Less specialized cases would not be so easy.
Expected result:
----------------
// There should be two chars in quotes and no comma between the quoted
// value and WHERE
... x="**" WHERE ...
Actual result:
--------------
// Two mb chars elsewhere in string displaced the substitution
// by two places to the left, wiping out a quoted char and leaving
// the comma:
... x="* ",WHERE ...
// Could it be possible for $s{} to index by mb chars? If so, then
// $s[] could be resurrected to index by bytes as both do currently.
--
Edit bug report at http://bugs.php.net/?id=43950&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=43950&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=43950&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=43950&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=43950&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=43950&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=43950&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=43950&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=43950&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=43950&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=43950&r=support
Expected behavior: http://bugs.php.net/fix.php?id=43950&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=43950&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=43950&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=43950&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43950&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=43950&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=43950&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=43950&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=43950&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=43950&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=43950&r=mysqlcfg
