Bug #60694 [NEW]: print() results in bad logic

From: Date: Tue, 10 Jan 2012 02:26:21 +0000
Subject: Bug #60694 [NEW]: print() results in bad logic
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-166309@lists.php.net to get a copy of this message 
From:             
Operating system: CentOS release 5.4 (Final)
PHP version:      5.3.8
Package:          Scripting Engine problem
Bug Type:         Bug
Bug description:print() results in bad logic

Description:
------------
Unlike echo, the print construct is allowed inside logic clauses.  If it is

reached (not short-circuited), it will cause the rest of that clause to be
true.  
Tested with 5.3.8 and PHP 5.3.9RC5-dev, both with default configure.



Test script:
---------------
<?php

echo (false && print('')) ? "Fail\n" : "Pass\n";
echo (print('') && false) ? "Fail\n" : "Pass\n";
echo (print('') && false && false) ? "Fail\n" :
"Pass\n";
echo ((print('') && false) && true) ? "Fail\n" :
"Pass\n";
echo ((print('') && false) && false) ? "Fail\n" :
"Pass\n";

?>

Expected result:
----------------
The word "Pass" five times.

Actual result:
--------------
The middle three fail.  The first and last pass, and are included to
demonstrate 
the limits of the bug.

-- 
Edit bug report at https://bugs.php.net/bug.php?id=60694&edit=1
-- 
Try a snapshot (PHP 5.4):            https://bugs.php.net/fix.php?id=60694&r=trysnapshot54
Try a snapshot (PHP 5.3):            https://bugs.php.net/fix.php?id=60694&r=trysnapshot53
Try a snapshot (trunk):              https://bugs.php.net/fix.php?id=60694&r=trysnapshottrunk
Fixed in SVN:                        https://bugs.php.net/fix.php?id=60694&r=fixed
Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=60694&r=needdocs
Fixed in release:                    https://bugs.php.net/fix.php?id=60694&r=alreadyfixed
Need backtrace:                      https://bugs.php.net/fix.php?id=60694&r=needtrace
Need Reproduce Script:               https://bugs.php.net/fix.php?id=60694&r=needscript
Try newer version:                   https://bugs.php.net/fix.php?id=60694&r=oldversion
Not developer issue:                 https://bugs.php.net/fix.php?id=60694&r=support
Expected behavior:                   https://bugs.php.net/fix.php?id=60694&r=notwrong
Not enough info:                     https://bugs.php.net/fix.php?id=60694&r=notenoughinfo
Submitted twice:                     https://bugs.php.net/fix.php?id=60694&r=submittedtwice
register_globals:                    https://bugs.php.net/fix.php?id=60694&r=globals
PHP 4 support discontinued:          https://bugs.php.net/fix.php?id=60694&r=php4
Daylight Savings:                    https://bugs.php.net/fix.php?id=60694&r=dst
IIS Stability:                       https://bugs.php.net/fix.php?id=60694&r=isapi
Install GNU Sed:                     https://bugs.php.net/fix.php?id=60694&r=gnused
Floating point limitations:          https://bugs.php.net/fix.php?id=60694&r=float
No Zend Extensions:                  https://bugs.php.net/fix.php?id=60694&r=nozend
MySQL Configuration Error:           https://bugs.php.net/fix.php?id=60694&r=mysqlcfg

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