public function seek($offset)
	{
		if ($this->offsetExists($offset))
		{
			$this->_current = $offset;
			return TRUE;
		}
		return FALSE;
	}
public function seek($offset)
	{
		if ($this->offsetExists($offset))
		{
			$this->_current = $offset;
			return TRUE;
		}
		return FALSE;
	}
public function seek ( $ offset ) { if ( $ this -> offsetExists ( $ offset ) ) { $ this -> _current = $ offset ; return TRUE ; } return FALSE ; }
Implementation of SeekableIterator

@param   mixed  $offset
@return  boolean
Implementation of SeekableIterator