ID: 30732
User updated by: thomas dot keller at inatec dot com
Reported By: thomas dot keller at inatec dot com
Status: Bogus
Bug Type: Scripting Engine problem
Operating System: Linux Mandrake 8, Linux 2.4.3
PHP Version: 4.3.9
New Comment:
Hrm... I thought of 'Z' not as a string, but
as a single character. In other programming
languages (C/C++, Java) a char is a signed
BYTE, thus can be used as replacement for
integer values. So I expect I need to write
for ($i=ord('A');$i<=ord('Z'); $i++) print chr(i);
to get my desired output? Since I don't know
a PHP shorthand for Perl's
foreach ('A' .. 'Z') print $_;
Thanks for clearing that up.
Previous Comments:
------------------------------------------------------------------------
[2004-11-09 15:09:58] [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 you use ++ on strings, the sequence of values is:
... \'X\', \'Y\', \'Z\', \'AA\', \'AB\', ... \'AZ\', \'BA\', ...
Only when this sequence reaches \'ZA\' does it fail the <=\'Z\' test.
------------------------------------------------------------------------
[2004-11-09 11:07:12] thomas dot keller at inatec dot com
Description:
------------
Configure command:
'./configure' '--prefix=/usr/local/php'
'--with-apxs2=/home/apache2/apache-2.0.52/bin/apxs'
'--enable-versioning' '--with-mysql=/usr/local/mysql' '--with-gd'
'--with-zlib'
I use the following code snippet to print out an array
of chars in alphabetic order. If I have the condition
$i < 'Z' (so only until 'Y'), everything works fine,
for the condition(s) $i <= 'Z' or $i < ('A' + 26)
PHP produces wrong results.
I could reproduce the error on a Redhat 9 system with PHP 4.3.4.
Reproduce code:
---------------
$letters = array();
for ($i='A'; $i<='Z'; $i++) print $i;
Expected result:
----------------
ABCDEFGHIJKLMNOPQRSTUVWXYZ
(26 ^ 1 letters)
Actual result:
--------------
ABCDEFGHIJKLMNOPQRSTUVWXYZAAABAC .. YZ
(26 ^ 2 letters)
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Edit this bug report at http://bugs.php.net/?id=30732&edit=1
