ID: 29917
Updated by: [EMAIL PROTECTED]
Reported By: dasch at ulmail dot net
-Status: Open
+Status: Bogus
Bug Type: Class/Object related
Operating System: Linux
PHP Version: 5.0.1
New Comment:
This works fine for me:
[EMAIL PROTECTED]:~$ cat bug29917.php
<?php
class oo {
var $a;
}
$o = new oo;
echo isset($o->a) ? "yes\n" : "no\n";
$o->a = 'bar';
echo isset($o->a) ? "yes\n" : "no\n";
?>
[EMAIL PROTECTED]:~$ php bug29917.php
no
yes
Come up with a short example like mine that shows that it doesn't work.
Just saying $o->a won't work doesn't help.
Previous Comments:
------------------------------------------------------------------------
[2004-08-31 19:35:52] dasch at ulmail dot net
Still not resolved, you still have to use the following code to access
the properties:
$a = $o->a;
echo isset($a) ? "yes\n" : "no\n";
Another guy thought that it would be neat if there was a __isset magic
method.
------------------------------------------------------------------------
[2004-08-31 16:27:11] fch at hexanet dot fr
Sorry, but if you do that :
$o->a = 'foo';
echo isset($o->a) ? "yes\n" : "no\n";
Expected result was true, but actual result is false !
And $o->a is set !
------------------------------------------------------------------------
[2004-08-31 16:20:45] [EMAIL PROTECTED]
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php
This is correct, the isset() checks if a variable is set or not. In
your case it\'s simply not set (it will be set after __get() is
executed on it once).
------------------------------------------------------------------------
[2004-08-31 16:00:43] dasch at ulmail dot net
Description:
------------
When trying to determine whether or not a property in an overloaded
object is set, isset() always returns FALSE. This is not the case with
objects that isn't overloaded (doesn't have a __get() method defined).
Reproduce code:
---------------
<?php
class OO
{
private $elem = array("a" => 1);
public function __get ($prop)
{
if (isset($this->elem[$prop])) {
return $this->elem[$prop];
} else {
return NULL;
}
}
public function __set ($prop, $val)
{
$this->elem[$prop] = $val;
}
}
$o = new OO();
echo isset($o->a) ? "yes\n" : "no\n";
echo isset($o->b) ? "yes\n" : "no\n";
echo is_null($o->a) ? "yes\n" : "no\n";
echo is_null($o->b) ? "yes\n" : "no\n";
?>
Expected result:
----------------
yes
no
no
yes
Actual result:
--------------
no
no
no
yes
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=29917&edit=1
