Edit report at http://bugs.php.net/bug.php?id=43936&edit=1
ID: 43936
Comment by: icy at lighttpd dot net
Reported by: james dot laver at gmail dot com
Summary: __empty() magic method
Status: Assigned
Type: Feature/Change Request
Package: Class/Object related
Operating System: GNU/Linux
PHP Version: 5.2.5
Assigned To: dmitry
New Comment:
Simple test script to trigger the bug:
<?php
class Foo {
public $vars;
function Foo() {
$this->vars['bar'] = 1;
}
function __get($var) {
return $this->vars[$var];
}
}
$foo = new Foo;
var_dump(empty($foo->bar));
$baz = $foo->bar;
var_dump(empty($baz));
Expected result:
----------------
bool(false) bool(false)
Actual result:
--------------
bool(true) bool(false)
Previous Comments:
------------------------------------------------------------------------
[2010-06-30 11:51:54] [email protected]
hi Dmitry,
What's your thoughts on this one? Someone asked me about it and we found
this old bug.
A workaround is to implement __isset but that makes little sense (isset
!= empty) and is counter intuitive.
------------------------------------------------------------------------
[2008-01-25 14:40:45] james dot laver at gmail dot com
Description:
------------
Using empty() on a variable that would be pulled from __get does not
work, this has been established as 'not a bug' by more bug reports than
anyone cares to remember, however, the documentation's suggestion of
using __isset is not adequate if you wish to implement both isset and
empty functionality.
Thus I propose an __empty() magic method which would overload empty() in
the way that __isset() overrides isset().
Reproduce code:
---------------
public function __empty($value)
{
return empty($this->_values[$value]);
}
Expected result:
----------------
empty($object->my_empty_value) = true
Actual result:
--------------
.....
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/bug.php?id=43936&edit=1
