#29378 [Com]: foreach() doesn't work with arrays returned by __get

[benneh at gmail dot com]

 ID:               29378
 Comment by:       benneh at gmail dot com
 Reported By:      chernyshevsky at hotmail dot com
 Status:           Open
 Bug Type:         Zend Engine 2 problem
 Operating System: Windows 2000
 PHP Version:      5.0.0
 New Comment:

I've just run into this problem, here is my test case

Testcase:
---------
class Language {
        private $lang_bits = array(); 
        public function __get($lang_bit) {
                global $$lang_bit;

                if(!isset($this->lang_bits[$lang_bit])) {
                        $this->lang_bits[$lang_bit] = $$lang_bit;
                }
                return $this->lang_bits[$lang_bit];
        }
}

$page = array('bla' => 'xyz');
$lang = new Language;
foreach($lang->page as $lang_key => $lang_bit) {
        echo $lang_key.' => '.$lang_bit;
}

Expected Results :
------------------
bla => xyz

Actual Results :
----------------
Fatal error: Cannot access undefined property for object with
overloaded property access
Just confirming its presence in 5.0.2 WinXP SP2 Apache 1.3.31


Previous Comments:
------------------------------------------------------------------------

[2004-07-28 01:02:28] chernyshevsky at hotmail dot com

I know the class doesn't have a member called 'cows'. That's what
__get() and __set() is for after all. If I change the code to

$O->cows = array("Betty", "Agnes", "Jeff");
$temp = $O->cows;
foreach($temp as $cow) {
        echo "<div>$cow</div>";
}

Now why should it fail just because the property access is through
foreach()?

------------------------------------------------------------------------

[2004-07-26 16:45:56] cysgwr_eryri at yahoo dot co dot uk

Your 'Object' object doesn't have a 'cows' member variable. The "object
with overloaded property access" that the warning is telling you about
doesn't exist is this:

$O->cows

Which 'cows' are you referring to?

------------------------------------------------------------------------

[2004-07-25 17:47:50] chernyshevsky at hotmail dot com

Description:
------------
Not sure if this is a duplicate of #28444. It's certainly related.

Basically I was trying to loop through an array set earlier using __set
and retrieve through __get. Simple enough it seems, but the engine died
with an "Cannot access undefined property for object with overloaded
property access" fatal error.

Reproduce code:
---------------
class Object {
        private $values;

        function __set($name, $value) {
                $this->values[$name] = $value;
        }
        function __get($name) {
                return $this->values[$name];
        }
}

$O = new Object;
$O->cows = array("Betty", "Agnes", "Jeff");
foreach($O->cows as $cow) {
        echo "<div>$cow</div>";
}

Expected result:
----------------
Betty
Agnes
Jeff

Actual result:
--------------
Fatal error: Cannot access undefined property for object with
overloaded property access


------------------------------------------------------------------------


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Edit this bug report at http://bugs.php.net/?id=29378&edit=1