php inside the object attribute CRUD ||

<? PHP 

class Stu 
{ 
   public  $ name = 'brother' ;
    public  $ Sex   = 'M' ; 
} 
$ obj = new new Stu (); // instantiate 
$ obj -> Age = years '18 '; // add 
unset ( $ obj -> Age); // delete 
$ obj -> Sex = 'Simon'; // change              

echo  $ obj -> Sex; // check