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Bug #49434 define('CONSTANT',0) unexpected results
Submitted: 2009-09-02 01:19 UTC Modified: 2009-09-02 01:51 UTC
From: jon at ijk dot com dot au Assigned:
Status: Not a bug Package: Scripting Engine problem
PHP Version: 5.2.10 OS: WinXP SP3
Private report: No CVE-ID: None
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 [2009-09-02 01:19 UTC] jon at ijk dot com dot au 
Description:
------------
Unexpected output from using define('CONSTANT',0) specifically

Reproduce code:
---------------
define('TESTER',0);

if(TESTER=='me'){echo 'yes1';}
else{echo 'no1';}
if(TESTER==0){echo 'yes2';}
else{echo 'no2';}
if(TESTER==1){echo 'yes3';}
else{echo 'no3';}

Expected result:
----------------
no1yes2no3

Actual result:
--------------
yes1yes2no3

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 [2009-09-02 01:51 UTC] scottmac@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.

Read up on the operator comparisons.

"me" is cast to an integer which results in 0.
 
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