public function slice($offset = 0, $length = null, $preserve_keys = false)
        {
            $array = array_slice($this->get(), $offset, $length, $preserve_keys);
            $this->update($array);
            return $this;
        }
public function slice($offset = 0, $length = null, $preserve_keys = false)
        {
            $array = array_slice($this->get(), $offset, $length, $preserve_keys);
            $this->update($array);
            return $this;
        }
public function slice ( $ offset = 0 , $ length = null , $ preserve_keys = false ) { $ array = array_slice ( $ this -> get ( ) , $ offset , $ length , $ preserve_keys ) ; $ this -> update ( $ array ) ; return $ this ; }
Slice an Array.

@param int $offset
@param int|null $length
@param boolean $preserve_keys
@return \PHY\Variable\Arr
Slice an Array .