#49074 [Ver->Csd]: private class static fields can be modified by using reflection

[jani]

 ID:               49074
 Updated by:       j...@php.net
 Reported By:      1000235409 at smail dot shnu dot edu dot cn
-Status:           Verified
+Status:           Closed
 Bug Type:         Reflection related
 Operating System: *
 PHP Version:      5.3.0
 New Comment:

This bug has been fixed in SVN.

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.




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

[2009-08-01 00:48:34] s...@php.net

Automatic comment from SVN on behalf of jani
Revision: http://svn.php.net/viewvc/?view=revision&revision=286605
Log: - Fixed bug #49074 (private class static fields can be modified by
using reflection)

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

[2009-07-31 23:51:33] j...@php.net

Modifying returned array should not affect this. So expected output 
should be of course:

1
data2==>2
data3==>3
data==>1
data4==>4


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

[2009-07-27 13:08:33] 1000235409 at smail dot shnu dot edu dot cn

Description:
------------
When calling ReflectionClass::getStaticProperties() with a '&'
operator, we can easily modify the private static fields outside the
class, but only for fields declared in the parent class, not the class
itself.
But I don't know if PHP should make it possible to modify the
inaccessible class static fields or not, since the PHP manual just
contains a prototype in Reflection.

Reproduce code:
---------------
class Test {
        private static $data = 1;
        private static $data4 = 4;

        public static function test1() {
                echo self::$data;
        }
}

class Test2 extends Test {
        private static $data2 = 2;
        public static $data3 = 3;
}

$r = new ReflectionClass('Test2');
$m = & $r->getStaticProperties(); //here, with the '&'

$m['data'] = 100; //$data is in the parent class.
$m['data4'] = 400; //$data4 is in the parent class.
$m['data2'] = 200; //no effect.
$m['data3'] = 300; //no effect.
Test::test1();
echo "\n";
$m = $r->getStaticProperties();
foreach ($m as $key => $val) {
        echo $key . '==>' . $val . "\n";
}

Expected result:
----------------
1
data2==>2
data3==>3
data==>1
data4==>4

/**OR**/

100
data2==>200
data3==>300
data==>100
data4==>400

Actual result:
--------------
100
data2==>2
data3==>3
data==>100
data4==>400


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


-- 
Edit this bug report at http://bugs.php.net/?id=49074&edit=1