#29234 [Fbk->NoF]: empty($object->property) incorrect when property has access overloaded (__get)
ID: 29234
Updated by: php-bugs@lists.php.net
Reported By: chrissy at codegoat dot com
-Status: Feedback
+Status: No Feedback
Bug Type: Zend Engine 2 problem
Operating System: Windows XP
PHP Version: 5.0.0
New Comment:
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
Previous Comments:
------------------------------------------------------------------------
[2005-03-06 20:49:52] sniper@php.net
Please try using this CVS snapshot:
http://snaps.php.net/php5-latest.tar.gz
For Windows:
http://snaps.php.net/win32/php5-win32-latest.zip
------------------------------------------------------------------------
[2004-07-20 19:34:48] benjcarson at digitaljunkies dot ca
This may be related to bug #28176.
------------------------------------------------------------------------
[2004-07-18 01:14:15] chrissy at codegoat dot com
Description:
------------
The code below has a class with two properties. One which is a regular
public class property and the other which is accessed through the __get
function. Both are set to "Not Empty". However, when you call empty()
on the one accessed through __get, the empty() function returns TRUE
which is incorrect. The problem can be remedied by first assigning the
value of the property to a variable and then calling the empty function
on that variable.
Reproduce code:
---------------
<?php
class EmptyTest {
public $emptyTest1 = "Not Empty";
protected $properties = array ('emptyTest2' => "Not Empty");
function __get($key) {
if (array_key_exists($key, $this->properties)) return
$this->properties[$key];
}
}
$emptyTest = new EmptyTest();
echo "The value of Test 1 is: \"" . $emptyTest->emptyTest1 .
"\"<br/>The value of Test 2 is: \"" . $emptyTest->emptyTest2 .
"\"<br/>-----------------------------------------------<br/><br/>";
if (empty($emptyTest->emptyTest1)) echo "Test 1 was empty <br/>";
else echo "Test 1 was not empty <br/>";
if (empty($emptyTest->emptyTest2))echo "Test 2 was empty <br/>";
else echo "Test 2 was not empty <br/>";
$test = $emptyTest->emptyTest2;
if (empty($test))echo "Test 2 was empty this time<br/>";
else echo "Test 2 was not empty this time<br/>";
?>
Expected result:
----------------
Both emptyTest1 and emptyTest2, when passed to the empty function, the
function should return true.
It could be that calling empty with a property that has had its access
overloaded by the __get function is invalid. If this is the case, I
would assume empty should at least throw a Warning.
Actual result:
--------------
The output of the above program is...
The value of Test 1 is: "Not Empty"
The value of Test 2 is: "Not Empty"
-----------------------------------------------
Test 1 was not empty
Test 2 was empty
Test 2 was not empty this time
------------------------------------------------------------------------
--
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