ID:               36814
 User updated by:  raphaelpereira at gmail dot com
 Reported By:      raphaelpereira at gmail dot com
-Status:           Bogus
+Status:           Open
 Bug Type:         SPL related
 Operating System: *
 PHP Version:      *
 Assigned To:      helly
 New Comment:

So, you are telling me (and everybody that uses PHP) that in the
following code:

$a = new ArrayObject();
$a['some'] = new ArrayObject();

if ($a['some']['not_set'])
   echo 'Crash!';
else
   echo 'Ok';


I cannot expect the answer 'Ok'? 

Because my code is doing exactly that, but with more complex code
before the check, none of them touching the ArrayObject in question.

I reopened the bug because this IS a bug. Even if I'm not using the
code correctly, memory is leaking and PHP should not leak, I suppose.


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

[2006-03-21 16:50:56] [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

There is no need for offsetGet to first call offsetExists from an
engine point of view. If there is a need for this it is either a
problem in the way you either overload ArrayObject/ArrayIterator or use
them.

Unless you can provide code that demonstrates an issue in ArrayObject
itself i assume there is a problem in usage.

Maybe you should note that offsetExists indeed always checks for pure
existance rather than working like empty() or isset() do. Even if
invoked by them.

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

[2006-03-21 15:50:41] raphaelpereira at gmail dot com

Description:
------------
My code is very complex and I could not reproduce the bug in another
code, but the issue is that it seems that ArrayObject::offsetGet
doesn't check if the key exists to return it and in some very specific
case this returns invalid results.

The problem is in my query_constraints class. On its constructor I
declare:

        class query_constraints
        {

                protected $_dados;

                public function __construct ($params=null)
                {
                        $this->_dados = new ArrayObject();

                        $this->_dados['in']    = new ArrayObject();
                        $this->_dados['eq']    = new ArrayObject();
...

Later on I have:

                public function equal($campo, $valor)
                {
                        if (!$this->_dados['eq'][$campo] && 
!$this->_dados['in'][$campo])
                        {
...


Both tests returns false on the first call to this method just after
object construction.


To workaroud the problem I substituted all references to ArrayObject in
this class with the following class:

        class ArrayObject1 extends ArrayObject
        {
                public function offsetget($key)
                {
                        if ($this->offsetexists($key))
                                return parent::offsetget($key);

                        return null;
                }
        }

This solved my problem.



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


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