Question

thinkphp中怎么用group和count

Answer 1

$count=M("Table")->where($w)->count();//相当于下一行：
$count=M("Table")->field("count(*) as count)->find();
$count=$count['count'];
$list=M("Table")->group("age")->select();//按age分组查找

Answer 2

M("table_name")->field("count(*) as sum")->where(['article_id'=>['in',[23,445,66]]])->group("pinglun_id")->select();
希望能看懂，table_name 表名，article_id文章ID，pinglun_id评论内容ID，
如果还看不懂可以去后盾网看看

Answer 3

http://www.thinkphp.cn/topic/41226.html