Edit report at http://bugs.php.net/bug.php?id=49889&edit=1
ID: 49889
Updated by: col...@php.net
Reported by: carmen at helderhosting dot nl
Summary: offsetExists wrong result
-Status: Assigned
+Status: Wont fix
Type: Bug
Package: SPL related
Operating System: unix
PHP Version: 5.3.0
Assigned To: colder
New Comment:
Indeed, this feels a bit odd. However, isset() internally calls
offsetExists, so
if offsetExists returns true(and it should) on NULLs, then isset() will
also
return true. Three options at hand:
1) Modify offsetExists semantics to return false on NULLs, or
2) add another magic method called by isset().
3) Modify the semantics of isset() on objects to also call offsetGet and
check
the value, like empty.
For which I have at least one objection each:
1+3) counter-intuitive, and would break BC
2) not worth it, given that isset() is the only special case.
I believe that this is a "won't fix" scenario, sorry.
Previous Comments:
------------------------------------------------------------------------
[2009-10-15 12:31:07] carmen at helderhosting dot nl
Description:
------------
If $o = new ArrayObject(); $o['x'] = null;
the result for isset($o['x']) it should be false, instead true is given
Reproduce code:
---------------
<?php
$a = array();
$a['x'] = null;
var_dump(isset($a['x']));
var_dump(empty($a['x']));
var_dump(array_key_exists('x', $a));
$o = new ArrayObject();
$o['x'] = null;
var_dump($o->offsetExists('x'));
var_dump(isset($o['x']));
var_dump(empty($o['x']));
var_dump(array_key_exists('x', $o));
?>
Expected result:
----------------
bool(false)
bool(true)
bool(true)
bool(true)
bool(false)
bool(true)
bool(true)
Actual result:
--------------
bool(false)
bool(true)
bool(true)
bool(true)
bool(true)
bool(true)
bool(true)
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/bug.php?id=49889&edit=1
