#50801 [NEW]: Concatenate null values gives an empty string
| From: | public at proside dot fr | Date: | Tue, 19 Jan 2010 17:16:49 +0000 |
| Subject: | #50801 [NEW]: Concatenate null values gives an empty string | ||
| Groups: | php.bugs | ||
| Request: | Send a blank email to php-bugs+get-146803@lists.php.net to get a copy of this message | ||
From: public at proside dot fr
Operating system: WIN XP SP3
PHP version: 5.3.1
PHP Bug Type: Scripting Engine problem
Bug description: Concatenate null values gives an empty string
Description:
------------
When you concatenate only NULL values, you got an empty string
Reproduce code:
---------------
$a = NULL;
$b = NULL;
$c = $a . $b;
echo (is_null($c)) ? 'TRUE' : 'FALSE';
Expected result:
----------------
TRUE
Actual result:
--------------
FALSE
If you look : $c = ""
--
Edit bug report at http://bugs.php.net/?id=50801&edit=1
--
Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=50801&r=trysnapshot52
Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=50801&r=trysnapshot53
Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=50801&r=trysnapshot60
Fixed in SVN: http://bugs.php.net/fix.php?id=50801&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50801&r=needdocs
Fixed in release: http://bugs.php.net/fix.php?id=50801&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=50801&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=50801&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=50801&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=50801&r=support
Expected behavior: http://bugs.php.net/fix.php?id=50801&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=50801&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=50801&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=50801&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=50801&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=50801&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=50801&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=50801&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=50801&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=50801&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=50801&r=mysqlcfg