#40757 [NEW]: get_object_vars get nothing in child class

[nrspark at 163 dot com]

From: nrspark at 163 dot com
Operating system: Windows XP
PHP version: 5.2.1
PHP Bug Type: Class/Object related
Bug description: get_object_vars get nothing in child class

Description:
------------
method to get the private properties of the base object
in base class object, everything ok
in child class use inherit method, get empty

Reproduce code:
---------------
class Base {
private $p1='sadf';

function getFields($obj){
return get_object_vars($obj);
}
}

class Child extends Base { }

$base=new Base();
print_r($base->getFields(new Base()));
$child=new Child();
print_r($child->getFields(new Base()));

Expected result:
----------------
Array ( [p1] => sadf )Array ( [p1] => sadf )

Actual result:
--------------
Array ( [p1] => sadf ) Array ( )

--
Edit bug report at [url]http://bugs.php.net/?id=40757&edit=1[/url]
--
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[tony2001@php.net]

ID: 40757
Updated by: [email]tony2001@php.net[/email]
Reported By: nrspark at 163 dot com
-Status: Open
+Status: Bogus
Bug Type: Class/Object related
Operating System: Windows XP
PHP Version: 5.2.1
New Comment:

I would be very surprised to be able to access private properties of
Base in the context of Child.
What you see is expected.


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

[2007-03-08 12:05:12] nrspark at 163 dot com

Description:
------------
method to get the private properties of the base object
in base class object, everything ok
in child class use inherit method, get empty

Reproduce code:
---------------
class Base {
private $p1='sadf';

function getFields($obj){
return get_object_vars($obj);
}
}

class Child extends Base { }

$base=new Base();
print_r($base->getFields(new Base()));
$child=new Child();
print_r($child->getFields(new Base()));

Expected result:
----------------
Array ( [p1] => sadf )Array ( [p1] => sadf )

Actual result:
--------------
Array ( [p1] => sadf ) Array ( )


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


--
Edit this bug report at [url]http://bugs.php.net/?id=40757&edit=1[/url]

[nrspark at 163 dot com]

ID: 40757
User updated by: nrspark at 163 dot com
Reported By: nrspark at 163 dot com
-Status: Bogus
+Status: Open
Bug Type: Class/Object related
Operating System: Windows XP
PHP Version: 5.2.1
New Comment:

but it works expect if the method change to this

function getFields($obj){
return array('p1'=>$obj->p1);
}

and it work expect in java using reflection

think about: Liskov Substitution Principle

i thing this is the implemention bug of get_object_vars


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

[2007-03-09 10:14:42] [email]tony2001@php.net[/email]

I would be very surprised to be able to access private properties of
Base in the context of Child.
What you see is expected.

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

[2007-03-08 12:05:12] nrspark at 163 dot com

Description:
------------
method to get the private properties of the base object
in base class object, everything ok
in child class use inherit method, get empty

Reproduce code:
---------------
class Base {
private $p1='sadf';

function getFields($obj){
return get_object_vars($obj);
}
}

class Child extends Base { }

$base=new Base();
print_r($base->getFields(new Base()));
$child=new Child();
print_r($child->getFields(new Base()));

Expected result:
----------------
Array ( [p1] => sadf )Array ( [p1] => sadf )

Actual result:
--------------
Array ( [p1] => sadf ) Array ( )


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


--
Edit this bug report at [url]http://bugs.php.net/?id=40757&edit=1[/url]

[tony2001@php.net]

ID: 40757
Updated by: [email]tony2001@php.net[/email]
Reported By: nrspark at 163 dot com
-Status: Open
+Status: Bogus
Bug Type: Class/Object related
Operating System: Windows XP
PHP Version: 5.2.1
New Comment:

>but it works expect if the method change to this
>function getFields($obj){ return array('p1'=>$obj->p1); }

Surely Base class can access it's own private properties.
The method belongs to the Base and is executed in it's scope.


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

[2007-03-09 13:06:23] nrspark at 163 dot com

but it works expect if the method change to this

function getFields($obj){
return array('p1'=>$obj->p1);
}

and it work expect in java using reflection

think about: Liskov Substitution Principle

i thing this is the implemention bug of get_object_vars

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

[2007-03-09 10:14:42] [email]tony2001@php.net[/email]

I would be very surprised to be able to access private properties of
Base in the context of Child.
What you see is expected.

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

[2007-03-08 12:05:12] nrspark at 163 dot com

Description:
------------
method to get the private properties of the base object
in base class object, everything ok
in child class use inherit method, get empty

Reproduce code:
---------------
class Base {
private $p1='sadf';

function getFields($obj){
return get_object_vars($obj);
}
}

class Child extends Base { }

$base=new Base();
print_r($base->getFields(new Base()));
$child=new Child();
print_r($child->getFields(new Base()));

Expected result:
----------------
Array ( [p1] => sadf )Array ( [p1] => sadf )

Actual result:
--------------
Array ( [p1] => sadf ) Array ( )


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


--
Edit this bug report at [url]http://bugs.php.net/?id=40757&edit=1[/url]

[nrspark at 163 dot com]

ID: 40757
User updated by: nrspark at 163 dot com
Reported By: nrspark at 163 dot com
-Status: Bogus
+Status: Open
Bug Type: Class/Object related
Operating System: Windows XP
PHP Version: 5.2.1
New Comment:

code 1: use get_object_vars
1>I would be very surprised to be able to access private properties of
1>Base in the context of Child.

code 2: direct access
2>Surely Base class can access it's own private properties.
2>The method belongs to the Base and is executed in it's scope.

$child=new Child();
$child->getFields(new Base());
what is the context of the method? base or child?

the result direct access and get_object_vars must be the same.

it is a bug that the get_object_vars function do not check the method
belongs to, but just check the object class call the method.


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

[2007-03-13 11:38:52] [email]tony2001@php.net[/email]

>but it works expect if the method change to this
>function getFields($obj){ return array('p1'=>$obj->p1); }

Surely Base class can access it's own private properties.
The method belongs to the Base and is executed in it's scope.

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

[2007-03-09 13:06:23] nrspark at 163 dot com

but it works expect if the method change to this

function getFields($obj){
return array('p1'=>$obj->p1);
}

and it work expect in java using reflection

think about: Liskov Substitution Principle

i thing this is the implemention bug of get_object_vars

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

[2007-03-09 10:14:42] [email]tony2001@php.net[/email]

I would be very surprised to be able to access private properties of
Base in the context of Child.
What you see is expected.

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

[2007-03-08 12:05:12] nrspark at 163 dot com

Description:
------------
method to get the private properties of the base object
in base class object, everything ok
in child class use inherit method, get empty

Reproduce code:
---------------
class Base {
private $p1='sadf';

function getFields($obj){
return get_object_vars($obj);
}
}

class Child extends Base { }

$base=new Base();
print_r($base->getFields(new Base()));
$child=new Child();
print_r($child->getFields(new Base()));

Expected result:
----------------
Array ( [p1] => sadf )Array ( [p1] => sadf )

Actual result:
--------------
Array ( [p1] => sadf ) Array ( )


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


--
Edit this bug report at [url]http://bugs.php.net/?id=40757&edit=1[/url]