phalcon查询：单条查询，多条查询，多表查询

单条查询，

$order = \OrderMain::findFirst("oid='" . $oid . "'");

　　

多条查询，

 $shop = \OrderShop::find(array(
                    'conditions'=>"oid=:oid:",
                    'bind'=>array('oid'=>$oid)
                ))

　　

多表查询

$builder = $this->modelsManager->createBuilder()
                ->columns("s.sid,s.oid,s.uuid,s.shop_id,s.shop_type_name,s.shop_name,s.shop_attr,s.shop_num,s.shop_price,s.post_true,
                    s.post_type,s.post_number,s.post_time,s.receive_true,s.create_time,m.order_status")
                ->addfrom("OrderMain",'m')
                ->leftjoin("OrderShop",'m.oid=s.oid','s');
            $builder->andWhere("m.delete_flg=0")->orderBy("m.create_time desc");