src/Search/Engine/SphinxQL.php
public function setOrderBy($order_by, $order = null)
    {
        $this->order_by = $order_by;

        $this->order = $order;

        return $this;
    }
public function setOrderBy($order_by, $order = null)
    {
        $this->order_by = $order_by;

        $this->order = $order;

        return $this;
    }
public function setOrderBy ( $ order_by , $ order = null ) { $ this -> order_by = $ order_by ; $ this -> order = $ order ; return $ this ; }
Set order by

@param string $order_by
Set order by