tp3.2查詢指定的字段

$categoods1 = M()->db(2,'a')->table('yp_goods')->field( 'goods_thumb,goods_video')->where($map)->select();
查詢goods_thumb,goods_video  用到了field

 

and查詢
$User = M("User"); // 實例化User對象
$map['status'] = 1;
$map['title']  = 'thinkphp';
// 把查詢條件傳入查詢方法
$User->where($map)->select(); 
'_multi'=>true必須加在數組的最后，表示當前是多條件匹配，這樣查詢條件就變成 status= 1 AND title = 'thinkphp'

 

        $map['user_id'] =$user_id;
        $map['type'] ='22';
        $map['date'] =array('between',array($start,$end));
       
        $daymoney = M('Log')->where($map)->sum('amount');