$my_global = 3;

function my_function ($my_input) {
   global $my_global;
   return($my_global * $my_input);
}

class MyClass {
   var $my_member;
   function __construct($my_constructor_input) {
      $this->my_member = $my_constructor_input;
   }

   function myMemberFunction ($my_input) {
      global $my_global;
      return($my_global * $my_input * my_function($this->my_member));
   }
}

$my_instance = new MyClass(4);
print("Odpowied brzmi: " . $my_instance->myMemberFunction(5));
