SplDoublyLinkedList::top
  Peeks at the node from the end of the doubly linked list
  
 
 
  Description
  
   public mixed SplDoublyLinkedList::top
    ( void
   )
  
 
 
  Parameters
  This function has no parameters.
  
 
 
  Return Values
  
   The value of the last node.
  
  
 
 
  Errors/Exceptions
   
    Throws RuntimeException when the data-structure is empty.