public function offsetSet($offset, $item)
	{
		if ($offset === null)
		{
			$this->_data[] = $item;
			$this->_total = count($this->_data);
		}
		else
		{
			$this->_data[$offset] = $item;
		}
	}
public function offsetSet($offset, $item)
	{
		if ($offset === null)
		{
			$this->_data[] = $item;
			$this->_total = count($this->_data);
		}
		else
		{
			$this->_data[$offset] = $item;
		}
	}
public function offsetSet ( $ offset , $ item ) { if ( $ offset === null ) { $ this -> _data [ ] = $ item ; $ this -> _total = count ( $ this -> _data ) ; } else { $ this -> _data [ $ offset ] = $ item ; } }
Append a new item

@param   mixed  $offset
@param   mixed  $item
@return  void
Append a new item