From: mauthi at gmx dot net
Operating system:
PHP version: 5.2.1
PHP Bug Type: *General Issues
Bug description: isset - null - is_null
Description:
------------
In my function (see code below) i tried to return the value of an array at
position "key"
If the value is null, i want to return null - it works as shown in the
code - but if the key is not set - my function also returns "null"!
So i can't find a solution to differ "null" or "not set"!
Reproduce code:
---------------
$a = array();
// case 1:
$a["key"] = null;
// end case 1
// case 2:
// end case 2
if (isset($a["key"]))
{
return $a["key"];
}
else
{
if (is_null($a["key"])
return null;
else
return "key not set!";
}
Expected result:
----------------
case 1:
null
case 2:
"key not set!"
Actual result:
--------------
case 1:
null
case 2:
null
>> Undefined Index: key in XXX (in log file)
--
Edit bug report at http://bugs.php.net/?id=40791&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=40791&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=40791&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=40791&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=40791&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=40791&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=40791&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=40791&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=40791&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=40791&r=support
Expected behavior: http://bugs.php.net/fix.php?id=40791&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=40791&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=40791&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=40791&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40791&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=40791&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=40791&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=40791&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=40791&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=40791&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=40791&r=mysqlcfg
