code: public function last()
  	{
  		$this->intIndex = $this->count() - 1;
  
  		$this->blnDone = true;
  		$this->arrCache = $this->resultSet[$this->intIndex];
  
  		return $this;
  	}
docs: Go to the last row of the current result
  
  @return Result|boolean The result object or false if there is no last row