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Bug #47067 NULL is set or unset value?
Submitted: 2009-01-11 10:44 UTC Modified: 2009-01-11 13:34 UTC
From: farkow at gmail dot com Assigned:
Status: Not a bug Package: Unknown/Other Function
PHP Version: 5.2.8 OS: Windows/WAMP Server
Private report: No CVE-ID: None
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From: farkow at gmail dot com
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 [2009-01-11 10:44 UTC] farkow at gmail dot com 
Description:
------------
I realized it when i try someting about my web-based game, when you set an integer NULL, it is same with 0 and ''.


Reproduce code:
---------------
<?php
$x = NULL;
if($x == 0) echo 'UPPS 1<br>';
if($x == '') echo 'UPPS 2<br>';
if($x === '') echo 'UPPS 3<br>';
?>

Expected result:
----------------
//output


Actual result:
--------------
//output
UPPS 1
UPPS 2

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 [2009-01-11 10:57 UTC] farkow at gmail dot com 
In description, i used a wrong word, sorry for my English.
It is not 'integer', i mean 'variable'.
 [2009-01-11 13:34 UTC] colder@php.net 
Sorry, but your problem does not imply a bug in PHP itself.  For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system is not the
appropriate forum for asking support questions.  Due to the volume
of reports we can not explain in detail here why your report is not
a bug.  The support channels will be able to provide an explanation
for you.

Thank you for your interest in PHP.

That's expected, please check out:
http://php.net/types.comparisons
 
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