#35870 [Opn->Bgs]: isset() on ternary operator incorrectly evaluates conditions
| From: | sniper@php.net | Date: | Mon, 02 Jan 2006 07:20:47 +0000 |
| Subject: | #35870 [Opn->Bgs]: isset() on ternary operator incorrectly evaluates conditions | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-91332@lists.php.net to get a copy of this message | ||
ID: 35870
Updated by: sniper@php.net
Reported By: jevon at jevon dot org
-Status: Open
+Status: Bogus
Bug Type: Scripting Engine problem
Operating System: Windows XP
PHP Version: 5.1.1
New Comment:
Please read again how ternary operator works.
hint1: isset($x[1]) == false
hint2: when condition in ternary operation evaluates to false, the
stuff after : is executed..
Previous Comments:
------------------------------------------------------------------------
[2006-01-02 05:56:26] jevon at jevon dot org
Description:
------------
I'm not sure if this has been submitted before, because it's a bit
difficult to search for 'isset' on bugs.php.net.
Basically if you have isset() in a ternary operation (?:), PHP
currently evaluates all items in the operation, whereas it shouldn't. I
guess this is because isset() is a language construct.
Reproduce code:
---------------
<?php
$x = array();
if (isset($x[1]))
echo $x[1];
else
echo 0;
echo isset($x[1]) ? 0 : $x[1];
?>
Expected result:
----------------
0
0
Actual result:
--------------
0
PHP Notice: Undefined offset: 1 in test.php on line 8
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=35870&edit=1