Description:
------------
Object oriented concept not work when i use pointer(&) on static variable.Static variable of Parent and child class has diffrent value at same time


Test script:
---------------
class a1{
    public static $obj='';
}
class b1 extends a1{
    
}


class c{
    public $forprint='cccObject';
}
class d{
    public $forprint='dddObject';
}

$c=new c();
$d=new d();
b1::$obj=& $d;
a1::$obj=& $c;
echo b1::$obj->forprint;
//out put must be print cccObject but it print dddObject in php

Actual result:
--------------
dddObject