#43583 [NEW]: Empty function fails when examining property of object accessed through __get

From: Date: Wed, 12 Dec 2007 19:07:07 +0000
Subject: #43583 [NEW]: Empty function fails when examining property of object accessed through __get
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-120612@lists.php.net to get a copy of this message
From:             michael at dmgx dot com
Operating system: Linux
PHP version:      5.2.5
PHP Bug Type:     Variables related
Bug description:  Empty function fails when examining property of object accessed through __get

Description:
------------
Empty returns false whenever a property of an object is accessed through
__get.  This problem has been reported before. The answer that "it's a
feature" is entirely bogus - Either return the right value or throw a damn
error but don't do nothing and leave people to wonder what the Hell is
going on with their script. I just lost two full days to this "feature" and
I'm not amused.

empty(someFunction());

throws an error.  If this bug is too much trouble to fix set it up so

empty($object->property);

also throws an error when a __get has been set.

Reproduce code:
---------------
class foo
{
	protected $data = array();
	public function __set($element, $value) { $this->data[$element] = $value;
}
	public function __get($element) { return $this->data[$element]; }
}

$bar = new foo();

$bar->cat = 'meow';

empty($bar->cat); // returns false, as expected.

$bar->cat = '';

empty($bar->cat); // returns false, should return true.



-- 
Edit bug report at http://bugs.php.net/?id=43583&edit=1
-- 
Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=43583&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=43583&r=trysnapshot52
Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=43583&r=trysnapshot53
Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=43583&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=43583&r=fixedcvs
Fixed in release:             http://bugs.php.net/fix.php?id=43583&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=43583&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=43583&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=43583&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=43583&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=43583&r=notwrong
Not enough info:              http://bugs.php.net/fix.php?id=43583&r=notenoughinfo
Submitted twice:              http://bugs.php.net/fix.php?id=43583&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=43583&r=globals
PHP 3 support discontinued:   http://bugs.php.net/fix.php?id=43583&r=php3
Daylight Savings:             http://bugs.php.net/fix.php?id=43583&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=43583&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=43583&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=43583&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=43583&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=43583&r=mysqlcfg


Thread (4 messages)

« previous php.bugs (#120612) next »