Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:43621
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: pass (pb1.pair.com: domain gmx.net designates 213.165.64.20 as permitted sender)
Cc: PHP Developers Mailing List <internals@lists.php.net>
Message-ID: <594A574F-E6B2-4FDD-92D3-4492D0DD2A5D@gmx.net>
To: =?ISO-8859-1?Q?Johannes_Schl=FCter?= <johannes@php.net>
In-Reply-To: <11478D41-777A-42BC-9CE7-105FFFEA4B74@gmx.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed; delsp=yes
Content-Transfer-Encoding: quoted-printable
Mime-Version: 1.0 (Apple Message framework v930.3)
Date: Sat, 4 Apr 2009 09:02:09 +0200
References: <2FA0A495-EC1A-4C51-9EE6-F9680D9FD114@gmx.net> <1238802796.5741.1.camel@goldfinger> <11478D41-777A-42BC-9CE7-105FFFEA4B74@gmx.net>
Subject: Re: [PHP-DEV] Private properties, Inheritance, Reflection (5.3)
From: r.borschel@gmx.net (Roman Borschel)

For what it matters, the same thing in Java returns the expected result:

Class clazz =3D Foo.class;
Field fooProp =3D clazz.getDeclaredField("foo");
fooProp.setAccessible(true);
Bar bar =3D new Bar();
String value =3D (String)fooProp.get(bar);
System.out.println(value);

So is this a bug or some weird behavior I just don't understand yet?

Roman

On Apr 4, 2009, at 7:34 AM, Roman Borschel wrote:

> Hi,
>
> On Apr 4, 2009, at 1:53 AM, Johannes Schl=FCter wrote:
>
>> On Fri, 2009-04-03 at 22:37 +0200, Roman Borschel wrote:
>>> Given the following simple classes
>>>
>>> class Foo {
>>>    private $foo =3D 'value';
>>>    public function getFoo() { return $this->foo; }
>>> }
>>> class Bar extends Foo {}
>>>
>>> Obviously, given an instance of Bar, say $bar, $bar->getFoo() =20
>>> returns
>>> 'value'.
>>>
>>> Now the question: How do I get at this value using reflection, given
>>> an instance of Bar?
>>
>> class Foo { private $foo =3D "value"; }
>> class Bar extends Foo {}
>> $f =3D new Foo;
>> // we have to know the context, as there might be multiple foo =20
>> properties
>> $r =3D new ReflectionProperty("Foo", "foo");
>> $r->setAccessible(true);
>> var_dump($r->getValue($f));
>>
>> works for me.
>>
>> johannes
>
> Thanks for your answer. Yes, this works, but here $f is an instance =20=

> of Foo, not Bar. When you make it an instance of Bar you get NULL. I =20=

> think this is not correct, is it?
> Given that we have a ReflectionProperty of class Foo at hand, from =20
> my understanding it should look at an instance of Bar as a Foo and =20
> return the value. Am I missing something?
>
> Regards
>
> Roman
>
>
> --
> PHP Internals - PHP Runtime Development Mailing List
> To unsubscribe, visit: http://www.php.net/unsub.php