Bug #52694 [NEW]: Or operator inconsistency
| From: | biolizard dot mail at gmail dot com | Date: | Wed, 25 Aug 2010 07:11:13 +0000 |
| Subject: | Bug #52694 [NEW]: Or operator inconsistency | ||
| Groups: | php.bugs | ||
| Request: | Send a blank email to php-bugs+get-153774@lists.php.net to get a copy of this message | ||
From:
Operating system: Linux Fedora 13
PHP version: 5.3.3
Package: Scripting Engine problem
Bug Type: Bug
Bug description:Or operator inconsistency
Description:
------------
The logical operator 'or' and the operator '||' produce different values,
which
is inconsistent with the description and the examples presented in the PHP
website. However, when returning from a function, the inconsistency is even
more
problematic. The operator 'or', when used in a statement (e.g.,
assignment),
returns the first value that is not false. However, when used as a return
expression the returned value is either true or false.
Test script:
---------------
<?php
function f() {
return 'ola' || 'adeus';
}
function p() {
return 'ola' or 'adeus';
}
$a = 'ola' || 'adeus';
$b = 'ola' or 'adeus';
echo $a . "\n";
echo $b . "\n";
echo f() . "\n";
echo p() . "\n";
?>
Expected result:
----------------
1
ola
1
ola
Actual result:
--------------
1
ola
1
1
--
Edit bug report at http://bugs.php.net/bug.php?id=52694&edit=1
--
Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=52694&r=trysnapshot52
Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=52694&r=trysnapshot53
Try a snapshot (trunk): http://bugs.php.net/fix.php?id=52694&r=trysnapshottrunk
Fixed in SVN: http://bugs.php.net/fix.php?id=52694&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=52694&r=needdocs
Fixed in release: http://bugs.php.net/fix.php?id=52694&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=52694&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=52694&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=52694&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=52694&r=support
Expected behavior: http://bugs.php.net/fix.php?id=52694&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=52694&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=52694&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=52694&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=52694&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=52694&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=52694&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=52694&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=52694&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=52694&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=52694&r=mysqlcfg