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Bug #33799 Inheriting of ArrayObject causes a strange behaviour
Submitted: 2005-07-21 09:34 UTC Modified: 2005-07-22 13:26 UTC
From: stochnagara at hotmail dot com Assigned:
Status: Closed Package: Class/Object related
PHP Version: 5.0.* OS: *
Private report: No CVE-ID: None
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From: stochnagara at hotmail dot com
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 [2005-07-21 09:34 UTC] stochnagara at hotmail dot com 
Description:
------------
When I extend the ArrayObject class, I cannot override any of the functions offsetXXX. Also when using var_dump i see only "Array" element and I don't see my new public property $name.

I suppose the second thing is a bug. But the first one is maybe a feature that one cannot override internal PHP functions.

Reproduce code:
---------------
<?
class AO2 extends ArrayObject {
	public $name;
	public function offsetGet ($index) {
		echo "Calling offsetGet for index $index\n";
		return parent::offsetGet ($index);
	}
}

$a = new AO2();
$a->name = "123";
$a[5] = 'Hi';
echo "a[5] = {$a[5]}\n";;
echo "a->name = {$a->name}\n";;
var_dump($a);
?>

Expected result:
----------------
Calling offsetGet for index 5
a[5] = Hi
a->name = 123
object(AO2)#1 (1) {
  [5]=>
  string(2) "Hi"
  ["name"]=>
  string(3) "123"
}


Actual result:
--------------
a[5] = Hi
a->name = 123
object(AO2)#1 (1) {
  [5]=>
  string(2) "Hi"
}

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 [2005-07-21 10:23 UTC] tony2001@php.net 
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
 [2005-07-21 11:51 UTC] helly@php.net 
This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.

As tony answered double check the documentation for your var_dump problem and then look into ext/spl/tests for the array tests that make use of ArrayObject flags. Furthermore what you want only works with 5.1.
 [2005-07-22 13:26 UTC] stochnagara at hotmail dot com 
Thanks for the fix. You are really fast:)

Now my offsetGet is called.

And about setFlags - I see that it is not documented yet, so I cannot see any information about it in the documentation. I see also that setFlags has only two values. 0 shows array elements and 1 shows other properties. Maybe there should be an option to show both of them. 

Thanks again!
 
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