Bug #53015 [Opn->Bgs]: Logic operator failure
Edit report at http://bugs.php.net/bug.php?id=53015&edit=1
ID: 53015
Updated by: cataphract@php.net
Reported by: jesus dot perez at infpormax dot es
Summary: Logic operator failure
-Status: Open
+Status: Bogus
Type: Bug
Package: Scripting Engine problem
Operating System: Debian 5.0.5
PHP Version: 5.2.14
Block user comment: N
New Comment:
This is indeed a problem of precedence. In particular, the precedence of
= is bigger than the precedence of OR.
Closing as bogus.
Previous Comments:
------------------------------------------------------------------------
[2010-10-07 19:23:02] jesus dot perez at infpormax dot es
There are a mistake at the email address
it must be
jesus.perez@informax.es
My apologies for the inconveniences
------------------------------------------------------------------------
[2010-10-07 19:21:25] jesus dot perez at infpormax dot es
Description:
------------
We found a problem with the logical operators, exactly with the "||" and
the "OR" operators.
We think both of them are the same, except for the precedence of each
one.
But when we run the script we show below, the results arent the same.
Is not a crash bug, but we found unexpected results using this
operators.
Thanks in advance
Test script:
---------------
<?php
$a = false;
$b = true;
$c = true;
$res10 = $a || $b || $c;
$res11 = ($a || $b) || $c;
$res12 = $a || ($b || $c);
$res13 = ($a || $b || $c);
$res20 = $a OR $b OR $c;
$res21 = ($a OR $b) OR $c;
$res22 = $a OR ($b OR $c);
$res23 = ($a OR $b OR $c);
echo ' TEST || <br />';
echo (int)$a." || ".(int)$b." || ".(int)$c." = ".(int)$res10."
<br />";
echo "(".(int)$a." || ".(int)$b.") || ".(int)$c." =
".(int)$res11." <br
/>";
echo (int)$a." || (".(int)$b." || ".(int)$c.") = ".(int)$res12."
<br
/>";
echo "(".(int)$a." || ".(int)$b." || ".(int)$c.") =
".(int)$res13." <br
/>";
echo ' <br />';
echo ' TEST OR<br />';
echo (int)$a." OR ".(int)$b." OR ".(int)$c." = ".(int)$res20."
<br />";
echo "(".(int)$a." OR ".(int)$b.") OR ".(int)$c." =
".(int)$res21." <br
/>";
echo (int)$a." OR (".(int)$b." OR ".(int)$c.") = ".(int)$res22."
<br
/>";
echo "(".(int)$a." OR ".(int)$b." OR ".(int)$c.") =
".(int)$res23." <br
/>";
?>
Expected result:
----------------
We except the same result for all the comparators. We think it must be
"true" all of them
Actual result:
--------------
The result is unexpected. The result is not the same using an "OR" or a
"||", but it must be the same.
is not a precedence problem because we are using only one operator at
the same time.
------------------------------------------------------------------------
--
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