PHP: Calling another class' method

Question

I\'m still learning OOP so this might not even be possible (although I would be surprised if so), I need some help calling another classes method.

For example in

Answer 1

//file1.php
name;
   }   
}
?>

//file2.php
getName();
       echo $name;    //Prints John
     }
   }

   $classb = new ClassB();
   $classb->callA();
?>