From: tomas dot matousek at matfyz dot cz
Operating system: WinXP
PHP version: 5.0.0RC2
PHP Bug Type: Zend Engine 2 problem
Bug description: empty statement misbehaves on objects
Description:
------------
There is written in the manual that empty($object) == TRUE, where $object
has empty properties.
>> empty() returns FALSE if var has a non-empty or non-zero value. In
otherwords, "", 0, "0", NULL, FALSE, array(), var $var;, and objects with
empty properties, are all considered empty. TRUE is returned if var is
empty. <<
But IMHO there is an error if $object is instance of class A {}.
I think the A's instance has no properties hence it is an "object with
empty properties".
So why empty($a) == FALSE where $a = new A?
It seems that empty() does never return TRUE.
BTW: What does "var $var;" mean?
Reproduce code:
---------------
class A {}
$a = new A;
var_dump(empty($a));
Expected result:
----------------
bool(true)
Actual result:
--------------
bool(false)
--
Edit bug report at http://bugs.php.net/?id=28502&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=28502&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=28502&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=28502&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=28502&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=28502&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=28502&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=28502&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=28502&r=support
Expected behavior: http://bugs.php.net/fix.php?id=28502&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=28502&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=28502&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=28502&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=28502&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=28502&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=28502&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=28502&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=28502&r=float
